@@stalkinghawk9244 Maybe, but it's not really an apples to apples comparison, so seems unlikely. Even if we incorrectly assume each would interact w/ rods/cones in the same manner, visible light photons are in the 1-10 eV range for their energy, where as cosmic rays range from 1Gev to 10^8 TeV!
I was taught it sinply with this phrase: Chernekov radiation happens when matter moves through a medium faster than light moves through the same medium. It is important to emphasise them point of a medium.
@@aydinsha Well, it is going faster than the speed of light *in water.* The speed of light is a constant, but varies depending on the medium, much like the speed of sound. Nothing is faster than the speed of light *in a vacuum.*
@@Vi-Six Quick correction: "The speed of light is a constant, but varies" this is a contradiction. It is either constant or it isn't. In this case, the speed of light c is a constant but the *group* velocity of light in different media can be vary. Personally I don't like mixing up the term "speed of light" with the speed of group velocity since it fundamentally suggests c is changing when it isn't. It certainly does APPEAR that light is changing speed but it isn't, only group velocity. If you define speed of light as group velocity then it's technically not wrong but just misleading in my opinion.
@@tryfergoodra552the speed at which things can travel varies based on what medium they travel through. Sound waves are a great example. Sound waves are effectively the vibration/displacement of matter that we pick up via our eardrums. They move outward from the source more or less exactly like a ripple in a pond. Because it travels through particles moving, the closer together the particles are the faster the displacement can travel. Hence, sound travels faster through solid objects than through water, air, etc. this is also why there is no sound in space, there is no matter to displace Light behaves quite differently, and takes knowledge of quantum physics/mechanics to truly understand, not something I’m gonna even bother trying in a yt comment section lol Regardless, I hope I helped a bit
Not many people get to see this sort of phenomena in person. I did when I worked for a Nuclear Power Plant. It is still one of the coolest things I've ever seen.
@@desbugfan8429 Hmm, good point, but I'm pretty sure the plural use works here as this in a reoccurring event and is happening in each of the many rods in the pools.
cap . this is visible in small experimental testing reactors there is no way you would be able to look down into a reactor in a working nuclear energy plant
@@xgladar Didn't know about the small experiments, but that's neat. And I never said I looked down into a reactor. It was a cooling pool where "used rods" are kept. But they are still very much active and hot which is why I could see them through like 200 feet of water; so cool! Will never forget the sight.
I've seen this in person. And I can say, without a doubt, that it is the most unique and special thing you can ever see with your eyes. There is quite literally nothing else on this planet that looks this way and it's impossible to mimic this effect with other means. It's super cool, the video unfortunately doesn't truly show what it looks like but it is truly amazing.
That sounds so cool! Did you work at a nuclear reactor? I wish I could see it with my own eyes too but I doubt they'll ever allow tours at nuclear reactors. I think they should though! The more the public learns about and understand nuclear power, the closer we get to a future where we harness that power and thrive. It is the safest, cleanest, and most effective source of energy we have yet invented.
@@Thetruthiscosmicif I recall correctly the reactor in video is some experimental one that is exposed in water so scientists can check how things work. I guess you would have to be quite influential like a science youtuber for them to allow you to check it out, or be a scientist and work there, or be their janitor lol
@@stasi0238 @Thetruthiscosmic As far as I'm aware it is possible to do tours at very *specific* reactors. The really small research ones specifically, but even so it's still extremely rare. I was doing research on radioactive decay and energy production. This is where the importance of things like Half-lifes come into play. Seeing the Cherenkov radiation was so special though. Definitely a dream come true and for sure on of my top 5 favorite memories I've ever had.
And if I remember correctly, someone else said that it's entirely safe to swim around in one of those during operation, as long as you don't dive too deep. The water absorbs all the radiation.
If you didn’t know the reactor in the video is called the foxtrot 9 nuclear reactor and the type of uranium used is a mix of u-235 and u-238 or possibly plutonium-238
I worked thirty seven years at a nuclear power plant and opening up the reactor for an outage was always cool to see. Also when fuel handlers moved the fuel rods. That neon blue glow is both beautiful and deadly.
Yeah i was a fuel handler for 5 years before transferring, definitely cool to see but the glow made it so hard to line the bundles up with the top rack especially right after shut down and using the cameras was never fun 😅
Well that explains why Godzilla's breath weapon is blue. Fun Fact: They actually made a reference to this phenomenon in 1962's King Kong vs Godzilla. When a group of scientists go to investigate mysterious activities around a group of icebergs and stumble across an area where this same blue light is emitting from around one of the icebergs.
Fun Fact: the difference between *the speed of light in a vacuum* and *the speed of light inside a material* (i.e. *not* in a vacuum) Is the basis for the Index of Refraction of that material. How much light slows down in a material describes how much it bends the light. Bonus Fun Fact: the "negative index of refraction" metamaterials do *not* make light go faster than light in a vacuum, nor is their index of refeaction actually negative, its just between 0 and 1. It's just a naming convention. These materials bend light opposite the angle that a non-metamaterial does, they do not "speed up" the light, that wouldn't make any sense.
@ghostlyfieldclub2930 yes. It is fascinating, and it comes from wave/particle duality. I'll try to summarize, but you can absolutely read more about it, even the Wikipedia article is really helpful. Okay, so the lower mass something is, the more like a wave it becomes. Photons behave the most like waves. Particles with mass, like electrons, also behave like waves, but to an ever-so-slightly-less degree. Waves propagate through a medium at what's called the *phase velocity*. Photons are strictly limited to that, but charged particles can move past the atoms of a dielectric material (a material that can be polarized), and excite that polarization faster than the phase velocity. When atoms are excited, they relax by releasing photons. But since the excitation is faster than the phase velocity, the resulting photons that are released lag behind the exciting charged particle, creating something similar to a 'sonic boom' of light, which is the blue that we see. Photons are limited to the phase velocity, so they can't create the same asymmetric excitation that the charged particles can. So in this very specific instance, where light behaves almost too much like a wave, charged particles can go faster than photons. In a vacuum, the limitation is back to being accelerating mass, and photons win by having no mass. Side note: things like this are also why some materials are shiny, but that's from something called the 'plasma frequency', and it's a whole other story.
@@dav1342 Oh god I've seen such a disaster on kyle hill's channel. 2 guys carried a cylinder like thing on their back for hours which was very hot and later they started vomiting and i don't remember the number but like 300-3000 or maybe 30000 cylinders were removed from the forest.
I worked in and out of nukes for almost 40 years and the nukes today are a lot different than the old ones. They give you 2500 millirems per quarter of radiation that you can get, and years ago you would sometimes get close. The new plants, you don't get much more than if you worked outside
It's important to make the distinction that the particles accelerated by the reacter aren't breaking the theoretical speed limit of the universe, i.e., the speed of light in a vacuum. The speed of light in water is ~.75c (c is the universal constant for speed of light in a vacuum). So, particles can travel faster than the speed of light in that medium without violating the Theory of Relativity.
also, it's important to mention that the light itself isn't slowed down, it's just hitting a lot of atoms, so it bounces around and curves more. C stays constant
Lol Water is actually an incredible shield against radiation, but yeah media often skews anything regarding radiation so that information is not well known
Naaaa that's bullshit one of the safest places to work is a nuclear power plant search about WANO the other day I was working with a french guy from WANO an amazing guy
The relative mass of an object depends upon its speed. If an object approaches the speed of light, its mass approaches infinity, which would require an infinite force to accelerate such an object. Such infinite forces do not exist so matter cannot be accelerated to the speed of light.
By Einstein's ToSR and ToGR, light has a constant speed, always equal to c. However, many wave interference effects take place in a reradiating medium, such that the velocity of light's PHASE becomes lower. In other words, a phase shift at each reradiator (atom) layer, that at larger scale looks like slower light with shorter wavelength. Highschool physics most often just set it as a given that light slows down, but without explaining the mechanics behind it.
To be fair, it's kinda more of a "a sonic boom isn't from the jet hitting you, but from a shockwave being made from it moving too goddamn fast." It's just that light and Electromagnetic radiation are made from the same thing so it's clumsier to explain.
This brings back memories as a nuclear engineering student at Arizona. For various classes/experiments we'd need to pulse the reactor and you'd get to see the chernekov radiation. For those lucky few that happened to be walking by the reactor lab when we did this, they might look up at one of the mirror above the reactor pool when they see a bunch of students around the reactor and catch the show too.
No. Cherenkov radiation is not created by objects moving faster than light speed. It's created by the electric field moving through a medium at a certain velocity of propagation. If the electric field moves through the medium faster than the medium can emit light, a charge is built up and released in the form of Cherenkov radiation. It has more to do with how fast an atom produces the photoelectric effect and not really anything to do with the speed of light.
For someone trying to sound smart you should know there is nothing of an "electric field"... There are electromagnetic fields, and visible light is just a narrow band within the electromagnetic field
@@Nidvard The behavior of the electromagnetic field can be resolved into four different parts of the variation in space and time: electrostatic fields, static magnetic fields, varying electric fields, and varying magnetic fields. The first two are produced by charges and currents, which are then combined into the electromagnetic field tensor in the presence of both a distribution of velocities of charges and currents. The behavior of electric and magnetic fields, both as separate entities and as a collective whole, are governed by Maxwell’s equations. This behavior of the electric field as defined by Maxwell's equations is what I was referring to. The electric field becomes out of phase with the emitted light wave and builds a charge that creates Cherenkov radiation. The electric field moves at a fraction of the speed of light as denoted by the velocity of propagation. Also, I didn't say anything about the visible light spectrum. Or the magnetic field as I'm referring specifically to the electric field and its charge. I hope that makes sense. Let me know if you have any more questions.
To all the people saying light moves slower in water: it does not. because of the medium, the light simply has to take a more "crooked" path, making it take longer. light speed is constant regardless of medium. EDIT: Since I keep getting comments correcting me, and can't find my other comment down in the replies, here's some additional information: I'm obviously simplifying in my original comment, but it's essentially the same end result. Basically what happens is, when light goes through a medium, the reason it takes longer (longer path), isn't because it tries to "avoid" particles or molecules as it may seem in my original comment, but rather, it's disturbed because the light keeps getting absorbed and re-emitted by the atoms in the medium, making the path way longer. When a particle moves faster than light can to complete this process (distance becomes easier to clear for the particle than light), then a shockwave occours in the electromagnetic field due to it's inability to re-adjust in time, causing the emission of blue light in this case
Cherenkov di... your bro here simply made a vid on a well known phenomenon and misrepresented it. One more thing, it's been known that quantum entanglement blows all this out of the "water" since Einstein was working on his big equation.
The light particles are slowed down in the pool. The radiation in the pool moves faster than the photons in the pool. The radiation is not travelling at light speed, not even close. It's just bad wording.
It very much feels like the Creator *meant* for us to find these things, new technologies. He gave us the brain, the imagination, the dexterity, & laid out all the materials in just the right way for us to eventually be able to find them & dream up different ways of using them. What a beautiful life we've been given. Just don't forget to give *all* the credit to Him (no specific religion, just what/whoever made it all possible.)
No, it’s unrelated to that. It’s just electron emissions from the electrons gaining energy and then falling back to a stable lower energy. When this happens a photon is released, it just happens to be blue because of the material and the speed of the particle.
Blue-shifted light can actually be any color. The reason we call it that is because blue light is higher-frequency. If visible light from something coming towards us is higher-frequency than it should be due to its motion then it has been shifted closer to being blue, or blue-shifted, and visible light that is lower-frequency than it should be has been shifted closer to red, or red-shifted. You could just as easily call it violet-shifting and have it be arguably more accurate. In other words, if an object should only be glowing in the infrared but it's moving quickly towards us and it appears to be red as a result, the light was still blue-shifted. Likewise, if a violet object is moving away from us and appears blue as a result, the light was still red-shifted.
Nothing (mass-less or massed particles…) can travel faster than the speed of light in a vacuum. However, in other mediums (such as water) , some particles can potentially move faster than light would go - IN THAT MEDIUM. For instance, while in water, light would instantly slow down to say, 75% of its normal speed, but there are other particles that DON’T SLOW DOWN as much and end up moving faster than light does - in that medium. Whenever that happens, a blue or violet glow occurs. Credit:IAEA
besides the difficulty of filling the galaxy with water, it still wouldn’t make us move faster. cherenkov radiation occurs when light is moving slower than it should be, so for example the light in this video is moving at 0.7c, and the other particles are moving at 0.8c. that still is less than c, it’s just that the miscellaneous particles are moving faster than the other photons in the solution.
This happens in dielectrics when their polarization occurs and the blue glow is caused when it happens underwater and it can't happen unless it is underwater
Even though light goes through a medium slower than a vacuum, it is still traveling at C, it just has to make more turns because it runs into particles. Light can ONLY move at c. It does not slow down.
Explanation: the speed of light in vacuum is approximately around 300.000 km/sec but the speed of light in water ist slowed down to approximately 225.000 km/sec. The particles in water are bit faster than 225.000 km/sec and because of the difference, you can see the blue light as a result of an echo.
to move faster than light, you need to have a super fast reaction, it cant be in a vacuum and it needs to be in something to slow down light. pretty cool
No one talking about this shedding light on invisible realms of the universe, so many thoughts and creations that can be possible or at least as far as the imagination can go anything is possible at least almost anything
This is definitely a phenomenon to be studied because it is a direct correlation between light and matter or electron. And particle physics first hand.
Just for a fact the blue light is caused by a phenomenon called Doppler's effect, where some thing travels at or faster than light the objects in front are red and objects in rear are blue,becase of the variation of speed of light of different colours. And (im not a nerd i just love these things)
This isn't related to the doppler effect at all, Cherenkov radiation is a totally separate thing. In this case it's due to electrons whizzing past the water molecules and polarizing them, and then when they flip back they emit light that just happens to be blue. The doppler effect requires a moving wave source that's traveling at an appreciable fraction of the wave speed, like the siren on a speeding ambulance, or a galaxy that's whizzing towards Earth at 2% of light speed.
technically the particles are not traveling faster than constant. in water, which has a refractive index of exactly 1, light travels at 25% the speed of constant (light speed in a vacuum AKA space) therefore its much easier to send the particles at a velocity faster then the speed of light.
I genuinely thought the first 2 seconds were the beginning of some cool anime opening, then it was educational. THEN it got super cool at the end. It SHREDS light. Dude that is so metal. I want that superpower.
As far as im aware light doesn't actually slow down when moving through water or glass etc light always moves at C in whatever medium, but the light doesnt take a straight path through those mediums it bounces around inside them and thus we percieve it as slowing down
The speed of light is never less than c. It's just in a certain substance light will "react" with the matter and constantly re-emit (as far as I remember), so it's not the same photon that entered the substance that comes out of it.
I believe that although we believe we know very much, we only know a tiny fraction of what’s really happening in the universe and all around us. There’s so much much more to discover and i hope I will be living long enough to at least see some of it
Nothing can go faster than the speed of light. Its a constant, also called C. What happens in a medium is that the phase velocity slows down, but the phase velocity is not the speed of light, as the speed of light is a constant.
I have a few questions. First, isn’t that deuterium, not water? Second, what is that countdown all about? What’s the cause of the sudden increase in Cherenkov radiation? Third, I was under the impression that exposure to an unshielded radioactive source strong enough to cause/emit Cherenkov radiation was effectively lethal (hence the deuterium). It is interesting that that blue glow is pretty universally perceived as beautiful and yet is a sign of something extremely deadly. I’m not sure there’s any deep conclusion to be drawn from that-it’s just… interesting.
I think you misinterpret it as being deuterium because of fusion reactors. Fission reactors only need regular water. The countdown is to announce when additional rods will be active, hence why when they are the glow increases. And about radiations, the shield is the water, there is enough depth so that water is effective.
@@the10thdoctor84 My understanding was you needed deuterium for shielding-but I am not a nuclear physics engineer; hell, I’m no kind of engineer, my training is in music theory and CompSci/systems analysis! My interests are… varied. Anyway, you could be right-regular water is sufficient, all those protons… (would have to dig into the difference between neutron quarks & proton quarks-I don’t have that memorized to intelligently opine on the fly). But I was definitely not thinking about fusion: as interesting & interested as I am in the subject, afaik the only effective shielding for fusion plasma thus faris magnetic. As an interesting aside viz. Deuterium, I’m shopping a new 4K flatscreen and have been looking at the latest Samsung QD-OLEDs. QD stands for Quantum dot. Rather than having four separate color filters from a white organic LED, Samsung uses a Blue LED and a single filter with different sized apertures at the nano scale allowing different ranges of photons to pass through thus providing for the R G B colors. The blue light is generated brighter as blue is always the dimmest and OLED has suffered from a relative lack of brightness. But (here it is) Samsung screens have boosted the overall brightness by using deuterium in the screen materials. How cool is that! (BTW, I’m a Doctor Who fan too-since Tom Baker-so respect for your user name!)
@@joerosenman3480 The reason I mentioned fusion is because I thought you mixed up vocabulary from fusion with fission. The reason being that we always talk about deuterium (and tritium) as a fuel for fusion. It wasn't unreasonable to think you then thought in fission deuterium was also important. But anyway, regular water is simply enough. And glad to see another doctor who fan, even though I only watched the show from Christopher Eccleston.
@@the10thdoctor84 No harm, no foul. And tritium is an entirely different story, of course, being radioactive itself… (hell, I suppose any molecule is a potential fuel source. I was surprised to learn that gold atoms are used in the colliders; still don’t understand why gold in particular though a heavy atom makes sense-but apparently gold splits into interesting sub-atomics… all above my pay grade.) So you’re a new Who fan. No shame there. I was extremely lucky to find the Doctor on PBS when Tom Baker first aired. When his (then current) season ended they re-ran the originals starting with season 1, episode 1 all of which still existed in those days! As you may know many of the early episodes are now lost forever-just scripts survive. The production values were… different than new Who. Cheesy monsters, re-used sets. BBC budgets. But the acting was mostly good as were the stories. The productions… needed to be compared to the then state of the art. This was before Star Trek, let alone Star Wars! If you adjust your expectations, you can discover the origins of Unit (doctor 3), Tom Baker is indescribable but for many he is THE Doctor-only Tennant came close to challenging that. Seven seasons of Tom Baker (shows were all multi-part in those days). Who would Five was aloof before Capaldi came about. Six and Seven-didn’t get much love from the BBC and it showed, which lead to the hiatus. But no fault to the actors that played the Doctor-the scripts and production weren’t the best. All that said, with Jodi’s Timeless Doctor (which I approved of-controversy be damned) the 12 regeneration limit went away, the movie Doctor and the War Lord Doctor became canon (you can watch that on TH-cam! Look up “Night of the Doctor”) as it completes the transition to Eccleston. With Disney taking over the franchise and insisting on calling this season Season 1 I wish they’d start calling it Doctor Who 1 for shows from 1963-1989, Doctor Who 2 for shows from 2005-2021, and Doctor Who 3 for shows from 2023-> This would bring clarity and disambiguate the shows and productions. When I rule the world… 😮😳🙄😝🌝
My favorite atomic phenomenon. Astronauts see flashes of blue light as cosmic rays pass through the water in their eyeballs.
Or cosmic rays hit a cone or rod in your eye and momentarily activate it.
@@MOSMASTERINGSince they respond to photons, and cosmic rays are actually high energy particles, would they actual be activated?
No way. For real??
@@chriss5266Think so. In the end both could be electrical Signals hm
@@stalkinghawk9244 Maybe, but it's not really an apples to apples comparison, so seems unlikely. Even if we incorrectly assume each would interact w/ rods/cones in the same manner, visible light photons are in the 1-10 eV range for their energy, where as cosmic rays range from 1Gev to 10^8 TeV!
I was taught it sinply with this phrase: Chernekov radiation happens when matter moves through a medium faster than light moves through the same medium. It is important to emphasise them point of a medium.
Yes and neither are going "faster than the speed of light" which is a constant.
@@aydinsha
Well, it is going faster than the speed of light *in water.* The speed of light is a constant, but varies depending on the medium, much like the speed of sound. Nothing is faster than the speed of light *in a vacuum.*
@@aydinshathe speed of light in any specified medium is a constant for that medium, with vacuum as a universal speed limit.
@@aydinshathe speed of light _in a vacuum*_
@@Vi-Six Quick correction: "The speed of light is a constant, but varies" this is a contradiction. It is either constant or it isn't.
In this case, the speed of light c is a constant but the *group* velocity of light in different media can be vary. Personally I don't like mixing up the term "speed of light" with the speed of group velocity since it fundamentally suggests c is changing when it isn't.
It certainly does APPEAR that light is changing speed but it isn't, only group velocity. If you define speed of light as group velocity then it's technically not wrong but just misleading in my opinion.
to anyone still confused, the electrons are moving faster than the speed of light *in water,* not the speed of light in a vacuum.
Thank you, i was so lost😂
i know that but im still confused here , like i dont know what to see or aprecciate 😅
Cant get into one fortnite match without hearing right foot creek 🙏💀😭😭
@@tryfergoodra552pretty blue from big brain physics 😊
@@tryfergoodra552the speed at which things can travel varies based on what medium they travel through.
Sound waves are a great example. Sound waves are effectively the vibration/displacement of matter that we pick up via our eardrums. They move outward from the source more or less exactly like a ripple in a pond. Because it travels through particles moving, the closer together the particles are the faster the displacement can travel. Hence, sound travels faster through solid objects than through water, air, etc.
this is also why there is no sound in space, there is no matter to displace
Light behaves quite differently, and takes knowledge of quantum physics/mechanics to truly understand, not something I’m gonna even bother trying in a yt comment section lol
Regardless, I hope I helped a bit
So you’re telling me Sonic the hedgehog had the right idea
And color apparently
@@ISawSomethingOnTheInternet yep .. same thing - rigth idea to use blue light
The blue blur, baybee
It'a funny when you remember that Sonic can't swim
Not only that but the Warp Nacelles in Start Trek with that same blue glow...
Visible "sonic booms"... maybe they could be called "optic booms" :D
you can usually see sonic booms so this is dumb asf. The boom is from exploding air not illuminating water
II've heard it called a "photonic boom"
II've heard it called a "photonic boom"
@@Sam-TheFullBull My guy do you not see the light?
optic flash
Not many people get to see this sort of phenomena in person. I did when I worked for a Nuclear Power Plant. It is still one of the coolest things I've ever seen.
Phenomenon. Phenomena is the plural.
@@desbugfan8429 Hmm, good point, but I'm pretty sure the plural use works here as this in a reoccurring event and is happening in each of the many rods in the pools.
cap .
this is visible in small experimental testing reactors there is no way you would be able to look down into a reactor in a working nuclear energy plant
@@xgladar Didn't know about the small experiments, but that's neat. And I never said I looked down into a reactor. It was a cooling pool where "used rods" are kept. But they are still very much active and hot which is why I could see them through like 200 feet of water; so cool! Will never forget the sight.
It's just a blue light, bro.
I've seen this in person. And I can say, without a doubt, that it is the most unique and special thing you can ever see with your eyes. There is quite literally nothing else on this planet that looks this way and it's impossible to mimic this effect with other means. It's super cool, the video unfortunately doesn't truly show what it looks like but it is truly amazing.
That sounds so cool! Did you work at a nuclear reactor? I wish I could see it with my own eyes too but I doubt they'll ever allow tours at nuclear reactors. I think they should though! The more the public learns about and understand nuclear power, the closer we get to a future where we harness that power and thrive. It is the safest, cleanest, and most effective source of energy we have yet invented.
@@Thetruthiscosmicif I recall correctly the reactor in video is some experimental one that is exposed in water so scientists can check how things work. I guess you would have to be quite influential like a science youtuber for them to allow you to check it out, or be a scientist and work there, or be their janitor lol
@@stasi0238 @Thetruthiscosmic
As far as I'm aware it is possible to do tours at very *specific* reactors. The really small research ones specifically, but even so it's still extremely rare.
I was doing research on radioactive decay and energy production. This is where the importance of things like Half-lifes come into play. Seeing the Cherenkov radiation was so special though. Definitely a dream come true and for sure on of my top 5 favorite memories I've ever had.
Cant get into one fortnite match without hearing right foot creek 🙏💀😭😭
@@Thetruthiscosmicfacts
The Universe: Nothing is faster than light.
Water: Hold my hydrogen.
Underrated
This made me laugh so hard. Take my up vote.
O
Definitely underrated.
Im reading the comments and this, this made me LAUGH OUT LOUD!
I remember someone commenting "Forbidden Jacuzzi" on the real video of the reactor 💀💀💀
I remember filling my shorts with fecal 🤣
And if I remember correctly, someone else said that it's entirely safe to swim around in one of those during operation, as long as you don't dive too deep. The water absorbs all the radiation.
There's actually less radiation in the pool than there is in the surrounding air
If you didn’t know the reactor in the video is called the foxtrot 9 nuclear reactor and the type of uranium used is a mix of u-235 and u-238 or possibly plutonium-238
Nice info even i don't understand what on the video 👍
Damn that is some really cool knowledge!
How did you know that hm? 🤨@@sobhas94
That's so cool!....... Now take off your trousers
So you also don’t know. Cool.
New plan for FTL travel!
fill space with water
Fill space with water
Become an electron
Fill space with water
Become an electron
???
Profit
aka "don't solve the problem, pretend it's not there"
😂
Make the space around the ship think you shouldn't abid to laws of physics. Avoid space cops.
This video deserves MILLIONS of likes. What they are doing and what you are seeing is absolutely incredible. 👏
Forbidden swimming pool
😂😂
Frfr
It’s actually perfectly safe to swim in due to how good water is at stopping radiation…. Just don’t go down very far lol
@@AubDenashican the water in our body stop radiation enough to not need lead protection
@@AubDenashithe radiation won't kill you, the armed security guards will
I worked thirty seven years at a nuclear power plant and opening up the reactor for an outage was always cool to see. Also when fuel handlers moved the fuel rods. That neon blue glow is both beautiful and deadly.
Yeah i was a fuel handler for 5 years before transferring, definitely cool to see but the glow made it so hard to line the bundles up with the top rack especially right after shut down and using the cameras was never fun 😅
That must've been so cool😮😮😮
Do you get superpowers if you swim in or drink the water ?
@@j.staline8764you get the superpower of infinitely growing new body cells.
@@j.staline8764you can phase through walls…. yeah…
So ironman pretty much nailed the color accuracy
when matter goes faster than light *in another medium*
When matter goes faster than light being absorbed and readmitted over and over through a medium
Its not going faster than the speed of light.
@@Bretaxy nothing can. Unless light is slowed down
Oooooooo-Aaaa-Oooo-Aaaa-AAAAAAAAA-Aaaa-eeee-oooo-a-e-o
@@Bretaxy it wouldn't, in a vacuum.
Well that explains why Godzilla's breath weapon is blue.
Fun Fact:
They actually made a reference to this phenomenon in 1962's King Kong vs Godzilla. When a group of scientists go to investigate mysterious activities around a group of icebergs and stumble across an area where this same blue light is emitting from around one of the icebergs.
Cant get into one fortnite match without hearing right foot creek 🙏💀😭😭
@@Penguin1400I can?
Nah, thats the Avatar
That’s why Sonic leaves behind a blue glow when he runs super fast
Fun Fact: the difference between
*the speed of light in a vacuum*
and
*the speed of light inside a material* (i.e. *not* in a vacuum)
Is the basis for the Index of Refraction of that material.
How much light slows down in a material describes how much it bends the light.
Bonus Fun Fact: the "negative index of refraction" metamaterials do *not* make light go faster than light in a vacuum, nor is their index of refeaction actually negative, its just between 0 and 1. It's just a naming convention. These materials bend light opposite the angle that a non-metamaterial does, they do not "speed up" the light, that wouldn't make any sense.
So, through anything other than a vacuum, some particles with mass can travel faster than photons?
@ghostlyfieldclub2930 yes.
It is fascinating, and it comes from wave/particle duality. I'll try to summarize, but you can absolutely read more about it, even the Wikipedia article is really helpful.
Okay, so the lower mass something is, the more like a wave it becomes.
Photons behave the most like waves. Particles with mass, like electrons, also behave like waves, but to an ever-so-slightly-less degree.
Waves propagate through a medium at what's called the *phase velocity*.
Photons are strictly limited to that, but charged particles can move past the atoms of a dielectric material (a material that can be polarized), and excite that polarization faster than the phase velocity.
When atoms are excited, they relax by releasing photons.
But since the excitation is faster than the phase velocity, the resulting photons that are released lag behind the exciting charged particle, creating something similar to a 'sonic boom' of light, which is the blue that we see.
Photons are limited to the phase velocity, so they can't create the same asymmetric excitation that the charged particles can.
So in this very specific instance, where light behaves almost too much like a wave, charged particles can go faster than photons.
In a vacuum, the limitation is back to being accelerating mass, and photons win by having no mass.
Side note: things like this are also why some materials are shiny, but that's from something called the 'plasma frequency', and it's a whole other story.
@@daniellewis3330 I love the explanation, thank you very much!
@ghostlyfieldclub2930 glad to help 😊
@@daniellewis3330Which Wikipedia article specifically? Cherenkov radiation, or something else?
Perfect household accessory. You get a night light, AND three extra eyes to read in bed with!
😂😂 if ur lucky maybe even a third arm to scratch ur back
Instructions unclear, I now have every type of cancer imaginable
And I think you could use the heat in winter and make enough electricity not for only your house, but also for the rest of the town, at least 😀
@@dav1342 Oh god I've seen such a disaster on kyle hill's channel. 2 guys carried a cylinder like thing on their back for hours which was very hot and later they started vomiting and i don't remember the number but like 300-3000 or maybe 30000 cylinders were removed from the forest.
@@The_Movie_Thieves That's interesting. I tried to find that video, but I can't find it. Could you tell me the name of the video please? 🙂 Thank you!
When they say “life flashes before your eyes” 💀
Another reason why blue is such a cool color
You should see this in UV :)
I did what you see there.
Crips ftw!
You’re safe near that reactor than you are in a coal mine
I worked in and out of nukes for almost 40 years and the nukes today are a lot different than the old ones. They give you 2500 millirems per quarter of radiation that you can get, and years ago you would sometimes get close. The new plants, you don't get much more than if you worked outside
@@4wheelliving132 some places it can even be less because how controlled everything is
Hell, in a reactor complex you'd probably get less radiation exposure than you would taking a walk down the street.
Coal mines are not known for their safety, I would feel more comfortable in front of a speeding vehicle than a coalmine
Every household should have one of these
It's important to make the distinction that the particles accelerated by the reacter aren't breaking the theoretical speed limit of the universe, i.e., the speed of light in a vacuum.
The speed of light in water is ~.75c (c is the universal constant for speed of light in a vacuum). So, particles can travel faster than the speed of light in that medium without violating the Theory of Relativity.
The video does….
Reactor*
And the particles aren't "accelerated" by the reactor, they are spontaneously emitted by atoms attempting to reach stability.
Exactly
also, it's important to mention that the light itself isn't slowed down, it's just hitting a lot of atoms, so it bounces around and curves more. C stays constant
so it's slower :) @@monodragon
Instead of a sonic boom, we have…
the Luminal Boom
edit: Luminal Bloom. Why didn’t I think of that! Y’all are geniuses
Photonic boom
Bloom
Luminal Bloom
sounds like a cool band name: “Luminal Boom”
Luminal bloom is the winner 🏆
Damn, this is cooler than I thought.
More proof the camera man never dies.
Bruh
chance of dying there is extremely low. hell, even jumping in has a lower chance of dying than driving your car
Lol
Water is actually an incredible shield against radiation, but yeah media often skews anything regarding radiation so that information is not well known
@@zahnatom You would die jumping into that. Not to radiation though. To the armed guard keeping watch to prevent that from happening.
Radiation is just a hoax look it up please
-1hp -1 hp -1hp
HOORAY!
Yeah... If you can see the blue glow, you're getting a lifetime supply of gamma radiation
Naaaa that's bullshit one of the safest places to work is a nuclear power plant search about WANO the other day I was working with a french guy from WANO an amazing guy
Yay radiation!!
Ouch. Radiation..
@@elprimerplayer277saying its the safest place to work is a big f**cking stretch. Sure its safe but not the safest by far.
The relative mass of an object depends upon its speed. If an object approaches the speed of light, its mass approaches infinity, which would require an infinite force to accelerate such an object. Such infinite forces do not exist so matter cannot be accelerated to the speed of light.
By Einstein's ToSR and ToGR, light has a constant speed, always equal to c. However, many wave interference effects take place in a reradiating medium, such that the velocity of light's PHASE becomes lower. In other words, a phase shift at each reradiator (atom) layer, that at larger scale looks like slower light with shorter wavelength. Highschool physics most often just set it as a given that light slows down, but without explaining the mechanics behind it.
"The blue glow is not from the radiation"
Later on
"Its from radiation "
To be fair, it's kinda more of a "a sonic boom isn't from the jet hitting you, but from a shockwave being made from it moving too goddamn fast." It's just that light and Electromagnetic radiation are made from the same thing so it's clumsier to explain.
@@BlackKnightsCommander more concisely, light IS electromagnetic radiation.
Sounds like y'all are nerds and op made a correct analysis
@@accelerator1666 Op is correct, if you are willing to call the wake in the water a "boat".
Yeah, he meant radioactivity, not radiation
cherenkov blue is so beautiful
This brings back memories as a nuclear engineering student at Arizona. For various classes/experiments we'd need to pulse the reactor and you'd get to see the chernekov radiation. For those lucky few that happened to be walking by the reactor lab when we did this, they might look up at one of the mirror above the reactor pool when they see a bunch of students around the reactor and catch the show too.
That blue light is almost as bright as when someone turns on your bedroom light when you're mid-stroke.
It’s more than just pretty cool. It’s phenomenal!
I've seen this in person and it is incredible!
No. Cherenkov radiation is not created by objects moving faster than light speed. It's created by the electric field moving through a medium at a certain velocity of propagation. If the electric field moves through the medium faster than the medium can emit light, a charge is built up and released in the form of Cherenkov radiation. It has more to do with how fast an atom produces the photoelectric effect and not really anything to do with the speed of light.
For someone trying to sound smart you should know there is nothing of an "electric field"...
There are electromagnetic fields, and visible light is just a narrow band within the electromagnetic field
@@Nidvard Thanks for your feedback. However, you're mistaken. The electric field and magnetic field combine to form the electromagnetic field.
@@Nidvard The behavior of the electromagnetic field can be resolved into four different parts of the variation in space and time: electrostatic fields, static magnetic fields, varying electric fields, and varying magnetic fields. The first two are produced by charges and currents, which are then combined into the electromagnetic field tensor in the presence of both a distribution of velocities of charges and currents. The behavior of electric and magnetic fields, both as separate entities and as a collective whole, are governed by Maxwell’s equations. This behavior of the electric field as defined by Maxwell's equations is what I was referring to. The electric field becomes out of phase with the emitted light wave and builds a charge that creates Cherenkov radiation. The electric field moves at a fraction of the speed of light as denoted by the velocity of propagation.
Also, I didn't say anything about the visible light spectrum. Or the magnetic field as I'm referring specifically to the electric field and its charge.
I hope that makes sense. Let me know if you have any more questions.
@@Nidvardplease learn some physics before calling people out. Look up some lectures on electricity and magnetism. Please learn something.
@@Nidvardyou are embarrassing
That blue is captivating I can’t possibly imagine seeing it in person
To all the people saying light moves slower in water: it does not. because of the medium, the light simply has to take a more "crooked" path, making it take longer. light speed is constant regardless of medium.
EDIT:
Since I keep getting comments correcting me, and can't find my other comment down in the replies, here's some additional information:
I'm obviously simplifying in my original comment, but it's essentially the same end result. Basically what happens is, when light goes through a medium, the reason it takes longer (longer path), isn't because it tries to "avoid" particles or molecules as it may seem in my original comment, but rather, it's disturbed because the light keeps getting absorbed and re-emitted by the atoms in the medium, making the path way longer. When a particle moves faster than light can to complete this process (distance becomes easier to clear for the particle than light), then a shockwave occours in the electromagnetic field due to it's inability to re-adjust in time, causing the emission of blue light in this case
Yes you are right 👍
Yup
..meaning it's slower. If it takes longer in water, it's slower in it.
@@Dan_Animationlight takes more time to go to observer than matter because of the ways both elements go through water.
@@edwardkuusela235 Ah, got it. Thanks
Its kinda cool to watch those electrons leaving behind the energy which glows blue😮😮😮
Great Explanation. My first response was, “well nothing moves faster then the speed of light.” So this was awesome short that shut me right on up lol.
Bro defeated every science video that says nothing can move faster than light
Cherenkov di... your bro here simply made a vid on a well known phenomenon and misrepresented it. One more thing, it's been known that quantum entanglement blows all this out of the "water" since Einstein was working on his big equation.
Light travels slower in water which is why this happens in fission bath tubs.
The light particles are slowed down in the pool. The radiation in the pool moves faster than the photons in the pool. The radiation is not travelling at light speed, not even close. It's just bad wording.
@@doublesynchrohelix8613he didn't misrepresent it
Them: “Nothing can go faster than the speed of light”
Also them:
It very much feels like the Creator *meant* for us to find these things, new technologies. He gave us the brain, the imagination, the dexterity, & laid out all the materials in just the right way for us to eventually be able to find them & dream up different ways of using them. What a beautiful life we've been given. Just don't forget to give *all* the credit to Him (no specific religion, just what/whoever made it all possible.)
It's basically Sonic booms, but for light!
So Godzilla’s just really fast
Cant get into one fortnite match without hearing right foot creek 🙏💀😭😭
Technically, his atomic breath is
@@Penguin1400💀💀😂
I was staring at the title, 100% ready to dispute it
Thank goodness it was clarified
Just felt the demon core right there
Pretty sure it was the same thing
Is it blue for the same reason that blue shift light is blue? Like blue shift/red shift to figure out if stars are moving towards or away from us?
No, it’s unrelated to that. It’s just electron emissions from the electrons gaining energy and then falling back to a stable lower energy. When this happens a photon is released, it just happens to be blue because of the material and the speed of the particle.
Blue-shifted light can actually be any color. The reason we call it that is because blue light is higher-frequency. If visible light from something coming towards us is higher-frequency than it should be due to its motion then it has been shifted closer to being blue, or blue-shifted, and visible light that is lower-frequency than it should be has been shifted closer to red, or red-shifted. You could just as easily call it violet-shifting and have it be arguably more accurate.
In other words, if an object should only be glowing in the infrared but it's moving quickly towards us and it appears to be red as a result, the light was still blue-shifted. Likewise, if a violet object is moving away from us and appears blue as a result, the light was still red-shifted.
Brilliant, love this short thanks for the knowledge.
I get a sense of fear once it turns on, like IDK how any of it works or much of what it is but I know I don't wanna be in that water.
water is a good insulator on radiation, youre fine
As long as you were at the top and dont dive to touch a rod youd be fine
being inside the water on the top is perfectly safe, just don't dive
POV: A friend (with light mode) shows me what's on their phone:
Lame
Haha _light_ mode
I see what u did there 😂😂
My intrusive thought:
"Jump!"
This is basically the same mechanism that allows us to track particles in nuclear accelerators
It kinda looks like a kurzgesagt animation
Nothing (mass-less or massed particles…) can travel faster than the speed of light in a vacuum.
However, in other mediums (such as water) , some particles can potentially move faster than light would go - IN THAT MEDIUM.
For instance, while in water, light would instantly slow down to say, 75% of its normal speed, but there are other particles that DON’T SLOW DOWN as much and end up moving faster than light does - in that medium.
Whenever that happens, a blue or violet glow occurs.
Credit:IAEA
is the light blue or just what the water mostly lets through?
Watch the video again. It's matter traveling faster than the speed of light. It leaves an echo of blue light he explains it.
@@valariemeltzer1059 read my question again
The glow is blue. Water may be blue but it is not this extreme on its own
So if we can fill the galaxy with water... We can travel faster than light... Sounds easy enough
besides the difficulty of filling the galaxy with water, it still wouldn’t make us move faster. cherenkov radiation occurs when light is moving slower than it should be, so for example the light in this video is moving at 0.7c, and the other particles are moving at 0.8c. that still is less than c, it’s just that the miscellaneous particles are moving faster than the other photons in the solution.
@@drewprice9284 ahhh I see.
It's like the speed of sound being different at different elevations, I gotcha.
You would need to be a particle smaller than a photon, then you could go faster than light in water.
We have the ocean. Load the rockets up with explosive outburst water tanks.
This happens in dielectrics when their polarization occurs and the blue glow is caused when it happens underwater and it can't happen unless
it is underwater
Still not faster than the speed of light, just faster than the speed of that light.
What is the difference in light?
@@globalgirl33 medium in which it travels ¯\_(ツ)_/¯
So how to go faster than light,
Make light go slower
lmao, basically yeah.
I'd love to see an attempt to utilize this for travel.
Nutrino had travelled faster than light in vaccum in LHC ( large hydron collider) which is biggest and most expensive machine in the world 😅
That laugh in the beginning in everything 😂
The blue light made this look so surreal that I thought it was kurzgesagt
Amazing !! Thank you !!
Wow I didnt think there would be a day where matpat come to us in a diffirent body 😢
Even though light goes through a medium slower than a vacuum, it is still traveling at C, it just has to make more turns because it runs into particles. Light can ONLY move at c. It does not slow down.
Explanation: the speed of light in vacuum is approximately around 300.000 km/sec but the speed of light in water ist slowed down to approximately 225.000 km/sec. The particles in water are bit faster than 225.000 km/sec and because of the difference, you can see the blue light as a result of an echo.
to move faster than light, you need to have a super fast reaction, it cant be in a vacuum and it needs to be in something to slow down light. pretty cool
No one talking about this shedding light on invisible realms of the universe, so many thoughts and creations that can be possible or at least as far as the imagination can go anything is possible at least almost anything
I wish I was taught this in school, but I learned this on TH-cam a long time ago when I first got into Star Trek
Exactly what I wanted to see : Johnny Knoxwille talking about laws of physics
This is definitely a phenomenon to be studied because it is a direct correlation between light and matter or electron. And particle physics first hand.
I don't know that much about radiation/uranium but this taught me a lot about it
It's about the same as seeing as a sound wave for better uny.
Understanding.
Just for a fact the blue light is caused by a phenomenon called Doppler's effect, where some thing travels at or faster than light the objects in front are red and objects in rear are blue,becase of the variation of speed of light of different colours. And (im not a nerd i just love these things)
This isn't related to the doppler effect at all, Cherenkov radiation is a totally separate thing. In this case it's due to electrons whizzing past the water molecules and polarizing them, and then when they flip back they emit light that just happens to be blue.
The doppler effect requires a moving wave source that's traveling at an appreciable fraction of the wave speed, like the siren on a speeding ambulance, or a galaxy that's whizzing towards Earth at 2% of light speed.
“Great Cthulhu your window to this world is ready!”-H.P. Lovecraft
The cameraman🗿🍷
technically the particles are not traveling faster than constant. in water, which has a refractive index of exactly 1, light travels at 25% the speed of constant (light speed in a vacuum AKA space) therefore its much easier to send the particles at a velocity faster then the speed of light.
Could you not exchange the water for a substrate, in which light moved even more slowly?
Missed opportunity to end the video with "That's pretty *rad* "
"Think fast chucklenuts" -Matter
Next time eat a salad.
My small man couldn’t fathom what he was saying. 😂science is truly amazing 👍🏾❤️
Light lose his last race with electron🗿
All I think is Godzilla when I see that
I genuinely thought the first 2 seconds were the beginning of some cool anime opening, then it was educational. THEN it got super cool at the end. It SHREDS light. Dude that is so metal. I want that superpower.
This guy is just Steve-O from a different universe.
As far as im aware light doesn't actually slow down when moving through water or glass etc light always moves at C in whatever medium, but the light doesnt take a straight path through those mediums it bounces around inside them and thus we percieve it as slowing down
I understood nothing.... bit looks amazing 😂😂
The speed of light is never less than c. It's just in a certain substance light will "react" with the matter and constantly re-emit (as far as I remember), so it's not the same photon that entered the substance that comes out of it.
Nicely done
A patch made by the admins to stop us from getting faster than light speed.
Producer: We need a graphic of an electron shedding photons..
Editor: I'm on it!
The particle accelerator is looking cool tho☠️
I believe that although we believe we know very much, we only know a tiny fraction of what’s really happening in the universe and all around us. There’s so much much more to discover and i hope I will be living long enough to at least see some of it
Nothing can go faster than the speed of light. Its a constant, also called C. What happens in a medium is that the phase velocity slows down, but the phase velocity is not the speed of light, as the speed of light is a constant.
I have a few questions.
First, isn’t that deuterium, not water?
Second, what is that countdown all about?
What’s the cause of the sudden increase in Cherenkov radiation?
Third, I was under the impression that exposure to an unshielded radioactive source strong enough to cause/emit Cherenkov radiation was effectively lethal (hence the deuterium).
It is interesting that that blue glow is pretty universally perceived as beautiful and yet is a sign of something extremely deadly. I’m not sure there’s any deep conclusion to be drawn from that-it’s just… interesting.
I think you misinterpret it as being deuterium because of fusion reactors.
Fission reactors only need regular water.
The countdown is to announce when additional rods will be active, hence why when they are the glow increases.
And about radiations, the shield is the water, there is enough depth so that water is effective.
@@the10thdoctor84 My understanding was you needed deuterium for shielding-but I am not a nuclear physics engineer; hell, I’m no kind of engineer, my training is in music theory and CompSci/systems analysis! My interests are… varied. Anyway, you could be right-regular water is sufficient, all those protons… (would have to dig into the difference between neutron quarks & proton quarks-I don’t have that memorized to intelligently opine on the fly). But I was definitely not thinking about fusion: as interesting & interested as I am in the subject, afaik the only effective shielding for fusion plasma thus faris magnetic.
As an interesting aside viz. Deuterium, I’m shopping a new 4K flatscreen and have been looking at the latest Samsung QD-OLEDs. QD stands for Quantum dot. Rather than having four separate color filters from a white organic LED, Samsung uses a Blue LED and a single filter with different sized apertures at the nano scale allowing different ranges of photons to pass through thus providing for the R G B colors. The blue light is generated brighter as blue is always the dimmest and OLED has suffered from a relative lack of brightness. But (here it is) Samsung screens have boosted the overall brightness by using deuterium in the screen materials. How cool is that! (BTW, I’m a Doctor Who fan too-since Tom Baker-so respect for your user name!)
@@joerosenman3480 The reason I mentioned fusion is because I thought you mixed up vocabulary from fusion with fission.
The reason being that we always talk about deuterium (and tritium) as a fuel for fusion. It wasn't unreasonable to think you then thought in fission deuterium was also important.
But anyway, regular water is simply enough.
And glad to see another doctor who fan, even though I only watched the show from Christopher Eccleston.
@@the10thdoctor84 No harm, no foul. And tritium is an entirely different story, of course, being radioactive itself… (hell, I suppose any molecule is a potential fuel source. I was surprised to learn that gold atoms are used in the colliders; still don’t understand why gold in particular though a heavy atom makes sense-but apparently gold splits into interesting sub-atomics… all above my pay grade.)
So you’re a new Who fan. No shame there. I was extremely lucky to find the Doctor on PBS when Tom Baker first aired. When his (then current) season ended they re-ran the originals starting with season 1, episode 1 all of which still existed in those days! As you may know many of the early episodes are now lost forever-just scripts survive. The production values were… different than new Who. Cheesy monsters, re-used sets. BBC budgets. But the acting was mostly good as were the stories. The productions… needed to be compared to the then state of the art. This was before Star Trek, let alone Star Wars! If you adjust your expectations, you can discover the origins of Unit (doctor 3), Tom Baker is indescribable but for many he is THE Doctor-only Tennant came close to challenging that. Seven seasons of Tom Baker (shows were all multi-part in those days). Who would Five was aloof before Capaldi came about. Six and Seven-didn’t get much love from the BBC and it showed, which lead to the hiatus. But no fault to the actors that played the Doctor-the scripts and production weren’t the best. All that said, with Jodi’s Timeless Doctor (which I approved of-controversy be damned) the 12 regeneration limit went away, the movie Doctor and the War Lord Doctor became canon (you can watch that on TH-cam! Look up “Night of the Doctor”) as it completes the transition to Eccleston.
With Disney taking over the franchise and insisting on calling this season Season 1 I wish they’d start calling it Doctor Who 1 for shows from 1963-1989, Doctor Who 2 for shows from 2005-2021, and Doctor Who 3 for shows from 2023-> This would bring clarity and disambiguate the shows and productions.
When I rule the world… 😮😳🙄😝🌝
This is like saying “if i cant be as fast as you then ill make you as slow as me” to light