THANK YOU for explaining why a photons life would be "instantaneous" I had always heard that but could never wrap my mind around it, until now, so infinite thanks! You do GREAT work honestly
I knew that photons didn't experience time, but it never occurred to me that all of space would be contracted to zero because of this (from the reference frame of the photon I mean). Mind Blown...
I believe that thinking about space collapsing when a photon travels is less interesting than the question of why it doesn't collapse. I think this arises because we are used to experiencing time, and so we try to make sense of light's motion in terms of experiences such as ours. But since photons don't experience anything then there is no need for these comparisons. To me, the strangest thing is that we experience time in the first place. I don't see why it should exist at all. It seems very confusing and I do not understand how we can have experiences of a flow of time.
I didn't know this either but I did always wonder how if a photon did not experience time how could it have a velocity as there is a component of time in velocity. miles per HOUR, kilometres per SECOND. This explains it, there is no component of distance either. This is all very weird. lol
"Photons are timeless" What a great statement! Wraps a concept in one sentence. 👍 I hope teachers play your videos in all schools all around the world in science classes. You are an amazing teacher.
The videos on this channel are consistently (1) engaging (2) actually explain things in terms I think I understand (3) make you want to watch and understand more! Thank you.
Just stumbled across your channel a few days ago, but it was the best stumble I’ve had in a very long time. I view/listen to a copious and eclectic select of science-based content. Yours is absolutely stellar and very accessible to my teen children. Thank you for your efforts and fantastic content!
Thankyou! This makes the Isomorphic Hologram known as "The Doctor" from Star Trek seem a lot more plausible which is a good thing as he was one of my favorite characters
Thank you very much. I didn't knew what would I do in my future, I didn't know where my interest was, but you made it particular. I am know a student of one of the best college in my country of physics. You are a very important person in my life. Thank you very much 🙏😘
From your name I am going to assume you are Indian (please feel free to correct me if I am wrong). I am also thinking about pursuing a career in physics, would you be so kind as to tell me which university are you currently attending?
@@yajursharma9305 Raman Research Institute It attracted me for it's study in theoretical physics and specifically light. It is in Bangalore (Bengaluru) which provides a convenient platform for research as progressing in a new theory you get a lot of assistance for most top colleges of India are present in Bengaluru.
@@abhijaynagal-pianomusic Thank you very much.I live in Bangalore so that's convenient. All this information is very much needed as I am about to graduate school in the 2 and half years and I would like to keep my options open.
Nicely explained! Love how you dissected the equation to reveal what why a photon has to travel at the speed of light. Want to see more dissections of equations in future videos!
It’s so interesting that you did this. I’ve been stuck on this thought for weeks; the universe from a photon’s “perspective.” Every night I fall asleep trying to comprehend the timelessness. So great, thank you. Also, I was so relieved you gave us “fast fast” when the segment demanded it. For a brief moment I was worried you were gonna skip it. Don’t ever change, Nick Lucid. 💪
I love how you brought in indeterminant forms. I might have to borrow that example next time someone wants to know why they should care about calculus. In fact, I've been tutoring a calc student about limits and we just started covering infinite limits and he really wants to understand. If I think of it, I'll recommend he watch this video to get en example of how it's useful.
Nick: when something is confined, that gives it mass Me: oh, so that's why I need to get out of the house to lose mass Seriously, a video on how confinement works would be appreciated, that was a totally "mind blown" moment.
Don't make a mistake, better stay home! When you start to move outside of house then your mass will increase! Also, photons cannot exist or be confined in spacetime! You only can detect the energy of photons when they collide with matter!
I am no phisicist but if had to guess, I'd argue that the confinement is due to different reasons in the case of molecules and black holes. In black holes, what binds everything together is gravity, all you need is to have enough energy/mass in a given space. In the case of molecules and atomic particles, you have the Strong Nuclear Force and the Weak Nuclear Force, both of which are MUCH stronger than gravity, but also have MUCH smaller radius of effect. The Strong Nuclear Force keeps Quarqs together and the Weak keeps Electrons in their "orbits".
Also, electromagnetic forces are weaker than SNF and WNF but stronger than gravity, so to form molecules, you have to approach sub-particles enough for the nuclear forces to overcome the electromagnetic force that repels opposite charges.
You are truly the best science educator on TH-cam. You don't repackage the same explanations like everyone else. Truly exceptional and entertaining content with a fresh perspective. Thank you for all your work! Take care, -E
You know , I love these "if" videos because I think science is all about the questions we ask and how we comprehend the data for those question , that's how science grows !!! Love the vid ♥️♥️♥️.
Loved it as always.....😇😇😇 The best part about Nick is that he doesn't go into unnecessary details and maintains accessibility...He just provides such insight that even beginners like me can cherish.... Loads of love ❤❤❤
Cool video! -- It brings up two related questions for me though: 1) If distance and time don't exist for photons due to relativistic effects, why would anything lie beyond our light-horizon cosmologically? 2) If the cumulative expansion of SpaceTime exceeds C, how does a photon experience this given that, at literally every point along it's trajectory, both time and distance are zero? 🤔😮 I always enjoy your videos, they're fun and humorous, *tremendously* informative _while_ still remaining eminently comprehensible and accessible for laymen, well done! 😁👍
Years ago, I was on a forum talking about light, and I made very similar conclusions about light being timeless and experiencing the entire universe as a singularity. I then had a troll claim he was a physics grad and tell me that's 'not how light works'. Gotta love the internets.
@Vilfredo Pareto Metaphysics would have some form of rules or explanations. Magic just happens because it's magic, and that's why it's magic at all. It also depends on the magic, like a witch makes a pact with black phillip and grinds human babies to fly...there's a reason to the magic, but no rhyme to it in a physical way. Most traditional magic is "Ain't gotta splain it."
Awesome video! I think this is great idea for a series - What if you are a photon? What if you are a black hole? What if you are a graviton? etc Fun perspectives to explore!
Mind blow after you explained the photon timeless/spaceless "experience". Incredible. Really makes you think if it we are only, in fact, experiencing a very small slice of what the universe actually is.
Never thought about it, but Mass being an emergent property would mean that reality itself is an emergent property and not a fundamental one. The implications of this might mean we can at some point (if we can alter emergent interactions) alter the fabric or reality itself. A world in which literally anything is possible.
OMG this feels like an entire episode of answering one of my comment questions here. Realistically, probably a coincidence but this still REALLY made my day.
Question: from our point of view a photon is emitted somewhere, travels in some direction and is possibly later absorbed or scattered. However for the photon this is all a singular “event”. Does this imply that all photons are causal connections that will ultimately always be scattered or absorbed, e.g. all photons must have a destination?
I had this question in my mind for a loooong time. I appreciate having an answer from someone I trust more than my intuition... But it is so frustrating! 😅 Having photons not experiencing time, I can deal with it. Having photons not experiencing space, I kind of get it. But the implication that it doesn't experience universe gets me confused, in the sense that if there is a wall, photon will be absorbed or reflected by it, it's not as if he doesn't interact with this universe. So in a way, without time and without space, there seems to be an experience of this universe! I first thought about this when presented with the double slit experiment actually, I was wondering if the fact that there is no space from photon perspective could explain something. I never reached a conclusion.
I was desperately waiting for your new video. I teach physics and no one dares to mess with me for concepts in physics. It's due to your clarity in concepts.
Retire o disco da geladeira, cubra com o recheio e dobre o excesso de massa sobre as maçãs. Cubra o que ficou exposto das maçãs com o crumble, pincele as bordas com o ovo e polvilhe mais crumble sobre as bordas. Asse por 45-60 minutos em forno preaquecido a 180ºC (médio)
Great vid. I've wondered about this for a while. As a follow up, how, in a spaceless, timeless existence does a photon move through the Universe? Or is it everywhere at once? How for example can we see back in time if the photons don't move? Or if they do move, how if they don't experience time? 🤯
Photon is not moving in the photon reference point, it only moves in our reference point. It is unchanging, so from the photon perspective there is no time and space, but from ours' it is different. So, unchanging photon moves through the Universe without experiencing time, the only reason we can see it as moving because we experience time.
@@ScienceAsylum i can understand 0/0 and ∞/∞ and 0^0 and ∞-∞ being indetermined, but why is 0*∞ not determined as 0? and ∞^0 as 1 since we know ∞ only has all real or computable or incomputable numbers, no matter what it is, as long as its a number, shouldn't we call it 0 and 1 and be done with it? I'm sure smart people have thought this through but i cannot really get why this would be interminite. infinity is more of a concept but nonetheless, it is essentially just a over grown variable like x or y taht is just taking place of the largest number- or even could be the "constant" like e or pi but for the largest number- either way, it will still yield a number since i think we can say for sure the end of the number timeline wont end with 0 nor anything incomputable but rather a number.
@@Nosirt Let's say that that infinity can be so big that it "overpowers" the zero in the zero times infinity case. Infinity is NOT a real number, it is used in analysis that something grows without bounds. In the same way in analysis the zero is not actually zero, it is "bigger number you put in closer to zero you get" so in this context it again isn't a well behaved number. And I repeat again: infinity is not a real number, in here it is a shortcut, it can be a number but you gotta define your number system differently then (for example as transfinite ordinals or whatever) to make your operations make sense.
My brain: how majestic and beautiful this universe is... This properties of matter and energy shaped my own structure and mind so it can wonder and explore this sea of information. My mouth: holy shieeet!
The fact photons are spaceless and timeless kinda breaks the concepts of wavelength and frequency, at least in their frame of reference. That's what happens when you keep using classical terminology to non-classical things. Also, does a single photon travelling through a medium with a refractive index bigger than 1 makes it suddenly experience time and space, since the speed of light supposedly becomes lower? The interaction with the particles of the medium could be considered a kind of confinement then?
The speed of light doesn't change when it moves through water. The trajectory just becomes more erratic. The wave portion of the photon increases as the particle path becomes more erratic which we see as refraction, or frequency change in the case of the non-visible spectrums.
Consider that each time a photon interacts with a particle that photon is "destroyed" and an other one is "born" so there wouldn't be interactions for that photon to tick its clock. The path it's just more erratic for the light that we shine through it as a whole so for us it seems slower on average. The singles photons just get destroyed and recreated or zip through the medium at light speed, the average of those velocities is proportional of what we call refractive index
Imagine getting launched out of a star at the speed of light and hitting the eyeball of a human thousands or millions of light years away without experiencing any time at all. The experience would be nothing at whatsoever, because time and space are fundamental to experiencing anything. It's like falling asleep only to wake up many years later.
Wow very enLIGHTening! As a hobby I read loads of books and articles on things from nuclier physics to quantum field theory to cosmology, so when I say I understood light in a new way; thats an award worthy explanation!
Is the whole energy of a photon is kinetic energy? If it is, then how the energy of light changes between deferent wave amplitude if it always at the speed of light
I may be wrong here but... the energy of light changing with wave amplitude is only true for "light" as a collection of photons, an emergent effect. For a single photon that would not be true because the energy would be E = hf, only proportional to frequency and the plank constant. This question gets to the heart of wave-particle duality. The classical wave model and particle models are both approximations of "reality". It can be argued that we don't really know what reality even is at the moment, but our best guess would be the "wave" model conceptualized in quantum mechanics.
Since a single photon would be weird to create an object but a lot of them could do so, could a laser beam (many photons with same polarity, phase etc) create a human being that way then?
@@matmirza5376 I think that instantaneously photons can (at least theoretically) become a positron and an electron, each of them half the energy of the photon, so if I'm not wrong, a photon can create something other than a photon. But my point is, could a lot of photons in the same state have the same effect as only one photon?
@@georgesimos4914 Well, you're not wrong. A disintegration of a photon can generate another two photons or an electron-positron pair. This last disintegration can happen if the photon has an energy of at least 1,02 MeV, the mass of the electron + the mass of the positron. Normally it occurs in the vecinities of atomic nucleus.
I haven't found a channel which explaines science topics better than this one. In particular I enjoy the pace of narration, the illustrations are fantastic... etc. etc. p.p. Yeah, using miles is a bit off for non-US citizens (ok, metric was presented in brackets), this drives me crazy in some videos, although I am crazy already... But its ok to be a bit non-metric in science ;-)
I always thought that light is not timeless because it is timeless relative to us but not to the photon itself of which is affected by gravity among other nuisances. Nuisances of which can only affect the photon if it “experiences” time.
It's not affected by gravity from _its own_ point of view... because from its own point of view nothing exists so nothing happens. Light is affected by gravity from _our_ point of view.
What would happen to the momentum of photon in a optically denser medium where the speed is lesser than speed of light? It would be counterintuitive if it would go to zero...
Saying light slows down in a material is just an over-simplification for the wave mechanics going on in that material. If you want to model light like that though, you'd have to assume it becomes massive inside the material.
Really great Mashup of some of your best content into a GedankenExperiment, that Einstein would definitely approve XD A real treat for the dedicated viewer! 1:04 Nice explanation of Light *Confinement* / *KugelBlitz*
So if both photons and gluons have no mass and confined photons would have mass, maybe the Star Trek TNG holodeck makes a bit of sense after all. Holodeck matter is created with photons instead of normal matter.
Amazing video nick! I have only one question, can anything occupy space but not experience time or vice versa( can anything experience time but not occupy any space)See i know it is a weird question but please answer it. It is very important to me
@@ScienceAsylum By the way, I explained this of the light to my nephew and he asked: But how do you contained light? My brain crashed, had to be rebooted and it's still repairing some corrupted files. th-cam.com/video/vS43ZgcQ_hE/w-d-xo.html
@The Science Asylum - sorry perhaps my question was phrased wrong. If a photon travels at the speed of light for 2 years, from the photons perspective it is instant. No time elapsed, only 2 years to the observer. So how old would a black hole be from a black hole’s perspective?
So earlyyyyy the last time....... Yeah the last time i was this early i was rooting for 100k subs And nick engages with the audience the most And his videos really get me rid of anxiety And this channel will soon become one of the best ste(A)m channels, it already is but the subs and views as well And thanks And nick is a good person from what i know , i dont need to say that but still the world needs such peeps who are good,
@@freezinfire I meant it in the sense (as explained in the video) that the point of creation and destruction of the photon is the same point in both time and space from the photon's perspective
@@discretelycontinuous2059 ok, and I meant with respect to the volume of the universe (which is a lot of light years) and speed of light (only 300000000 m/s)
@@freezinfire I understamd what you meant. And certainly it is. It is interesting to think that at light speed the universe is length-contrqated to 0 and time dilated so that it can arrive at any time in the future, potentiall billions of years "in an instant" (within the photon's reference frame)
@@ScienceAsylum I'm a philosopher and philologist trying to understand physics, so do forgive me if this is a ridiculous question. I wonder if gluons might actually be a type of photons, or maybe actual photons. That would mean we ARE made of light.
(Opens a photon's story book)
"In the beginning ... was the end."
LoL 😂
I am glad the photon had time to write the story book
...and there was nowhere to actually go anyway.
So he just said that the existence of photon is a thing without knowing there is something outside itself and something happened to it.
Let there be matter!
THANK YOU for explaining why a photons life would be "instantaneous" I had always heard that but could never wrap my mind around it, until now, so infinite thanks!
You do GREAT work honestly
Glad I could help 🤓
What about evolution, wouldn’t that kick in🤔
@@xxACIDVIRUSxx what does that question even mean
I knew that photons didn't experience time, but it never occurred to me that all of space would be contracted to zero because of this (from the reference frame of the photon I mean). Mind Blown...
You missed some Vsauce videos xD
I believe that thinking about space collapsing when a photon travels is less interesting than the question of why it doesn't collapse. I think this arises because we are used to experiencing time, and so we try to make sense of light's motion in terms of experiences such as ours. But since photons don't experience anything then there is no need for these comparisons.
To me, the strangest thing is that we experience time in the first place. I don't see why it should exist at all. It seems very confusing and I do not understand how we can have experiences of a flow of time.
@@compellingpoint7802 That...is one of the weirdest and best questions I've ever heard or read. Never even occurred to me and now I need the answer.
I didn't know this either but I did always wonder how if a photon did not experience time how could it have a velocity as there is a component of time in velocity. miles per HOUR, kilometres per SECOND. This explains it, there is no component of distance either. This is all very weird. lol
From its own perspective, it doesn't exist? Or does it exist in an infinitely small moment of "time"?
"Photons are timeless" What a great statement! Wraps a concept in one sentence. 👍 I hope teachers play your videos in all schools all around the world in science classes. You are an amazing teacher.
The videos on this channel are consistently (1) engaging (2) actually explain things in terms I think I understand (3) make you want to watch and understand more! Thank you.
Glad I can help! 🤓
Stellar video Nick (apart from the usage of miles)
You both make awesome videos!
Only way for us Americans to understand
😂 You're not the first person to complain. I just can't help myself.
@@ScienceAsylum You could always use both
Thank you for using miles
The other day i was telling my mom fast fast and couldn’t recollect from where i had picked that up
I want a tshirt with "Photons are timeless " quote written on it.
Me too!
Me 3
@@akshitsingh6429 Me 1. I'm not greedy.
*(and spaceless)
Yes, please!
Just stumbled across your channel a few days ago, but it was the best stumble I’ve had in a very long time. I view/listen to a copious and eclectic select of science-based content. Yours is absolutely stellar and very accessible to my teen children. Thank you for your efforts and fantastic content!
Thankyou! This makes the Isomorphic Hologram known as "The Doctor" from Star Trek seem a lot more plausible which is a good thing as he was one of my favorite characters
Thank you very much. I didn't knew what would I do in my future, I didn't know where my interest was, but you made it particular. I am know a student of one of the best college in my country of physics. You are a very important person in my life. Thank you very much 🙏😘
That's great! I'm so glad you found something you want to do.
From your name I am going to assume you are Indian (please feel free to correct me if I am wrong). I am also thinking about pursuing a career in physics, would you be so kind as to tell me which university are you currently attending?
@@yajursharma9305 Raman Research Institute
It attracted me for it's study in theoretical physics and specifically light. It is in Bangalore (Bengaluru) which provides a convenient platform for research as progressing in a new theory you get a lot of assistance for most top colleges of India are present in Bengaluru.
@@abhijaynagal-pianomusic Thank you very much.I live in Bangalore so that's convenient. All this information is very much needed as I am about to graduate school in the 2 and half years and I would like to keep my options open.
Ohh are u studying bsc physics at IIT
I’m so happy people and companies sponsor educational vids
Brilliant is _by far_ the best company I've ever worked with.
@@ScienceAsylum Agree!!!!
@@ScienceAsylum That's brilliant.
@@gale7682
*ba dum tss!* 🥁 😂 🤣 😅
Umm, can someone say the name of music he uses, it's so nice, he told it was from youtube library once.
Nicely explained! Love how you dissected the equation to reveal what why a photon has to travel at the speed of light. Want to see more dissections of equations in future videos!
It’s so interesting that you did this. I’ve been stuck on this thought for weeks; the universe from a photon’s “perspective.” Every night I fall asleep trying to comprehend the timelessness. So great, thank you. Also, I was so relieved you gave us “fast fast” when the segment demanded it. For a brief moment I was worried you were gonna skip it. Don’t ever change, Nick Lucid. 💪
"Luminous beings are we. Not this crude matter"
Be you angels?
@@anderstopansson Nae. We are but men
@@92Nizo Back! This is not the greatest song in the world...
@@anderstopansson This is just a tribute! 🎸🎸
@@92Nizo I don´t know how far away you live but I feel we are already friends...
This may actually be my favourite video you've made. Keep it up!
I love how you brought in indeterminant forms. I might have to borrow that example next time someone wants to know why they should care about calculus. In fact, I've been tutoring a calc student about limits and we just started covering infinite limits and he really wants to understand. If I think of it, I'll recommend he watch this video to get en example of how it's useful.
Nick: when something is confined, that gives it mass
Me: oh, so that's why I need to get out of the house to lose mass
Seriously, a video on how confinement works would be appreciated, that was a totally "mind blown" moment.
Don't make a mistake, better stay home! When you start to move outside of house then your mass will increase! Also, photons cannot exist or be confined in spacetime! You only can detect the energy of photons when they collide with matter!
I am no phisicist but if had to guess, I'd argue that the confinement is due to different reasons in the case of molecules and black holes.
In black holes, what binds everything together is gravity, all you need is to have enough energy/mass in a given space.
In the case of molecules and atomic particles, you have the Strong Nuclear Force and the Weak Nuclear Force, both of which are MUCH stronger than gravity, but also have MUCH smaller radius of effect. The Strong Nuclear Force keeps Quarqs together and the Weak keeps Electrons in their "orbits".
Also, electromagnetic forces are weaker than SNF and WNF but stronger than gravity, so to form molecules, you have to approach sub-particles enough for the nuclear forces to overcome the electromagnetic force that repels opposite charges.
You are truly the best science educator on TH-cam. You don't repackage the same explanations like everyone else. Truly exceptional and entertaining content with a fresh perspective. Thank you for all your work! Take care, -E
5:04 You just taught me what the HECK counts as an indeterminate form without trying. Thank God for this channel.
Blackpenredpen says indeterminate form just means do moar work
@@alextaunton3099 that's my boi
You know , I love these "if" videos because I think science is all about the questions we ask and how we comprehend the data for those question , that's how science grows !!! Love the vid ♥️♥️♥️.
This goofy guy has taught me more than a few weird facts. This video? 99% of my mass is massless. Lmao
@@i-evi-l man only if school was this good .
@@SagarKumar-xn1uf It's better to understand what makes the paradoxes before you actually hit the paradoxes. 😂
@@i-evi-l lol
Loved it as always.....😇😇😇
The best part about Nick is that he doesn't go into unnecessary details and maintains accessibility...He just provides such insight that even beginners like me can cherish....
Loads of love ❤❤❤
Wow, never expected a heart this quick 😋😋😋.....You're the best Nick..
Cool video! -- It brings up two related questions for me though:
1) If distance and time don't exist for photons due to relativistic effects, why would anything lie beyond our light-horizon cosmologically?
2) If the cumulative expansion of SpaceTime exceeds C, how does a photon experience this given that, at literally every point along it's trajectory, both time and distance are zero? 🤔😮
I always enjoy your videos, they're fun and humorous, *tremendously* informative _while_ still remaining eminently comprehensible and accessible for laymen, well done! 😁👍
Great video Nick! Clarified dozen of questions and created hundreds of others! :) This is the best of all!
Years ago, I was on a forum talking about light, and I made very similar conclusions about light being timeless and experiencing the entire universe as a singularity. I then had a troll claim he was a physics grad and tell me that's 'not how light works'. Gotta love the internets.
This was a really good video, you cleared many doubts that were troubling me for sometime.
Thanks you
You're very welcome! 🤓
This is right on the edge of metaphysics and philosophy.. heck.. even magic!
Some eureka insights here! Thank you so much!
@Vilfredo Pareto Metaphysics would have some form of rules or explanations.
Magic just happens because it's magic, and that's why it's magic at all. It also depends on the magic, like a witch makes a pact with black phillip and grinds human babies to fly...there's a reason to the magic, but no rhyme to it in a physical way.
Most traditional magic is "Ain't gotta splain it."
Awesome video! I think this is great idea for a series - What if you are a photon? What if you are a black hole? What if you are a graviton? etc
Fun perspectives to explore!
اشكرك
انت تبدل الكثير من الجهود
ولذالك اكرر شكري لك
Thank you Nick that was an amazing video as always!!
Mind blow after you explained the photon timeless/spaceless "experience". Incredible. Really makes you think if it we are only, in fact, experiencing a very small slice of what the universe actually is.
Short answer: We already *are* according to the ancients. Only a condensed state of it, according to the contemporaries. Great video! 💡
So finally, it's you who answered this question i was searching for so long that what is it like to travel at light speed?
Thanks for that!
Excellent summary enjoyed thank you 😉
This is one of my favorite video 😻
I discovered your channel recently. You make amazing videos. Please make more such videos. We are in dire need of educators like you.
"Ticking away the moments that make up a dull day"
from Pink Floyd's "Time"
Came here to like the T shirt - I fritter and waste the hours in an off-hand way :D
No one told you when to run, you missed the starting gun.…
"And you run and you run to catch up with the sun but it's sinking." If you're a photon, that is.
Racing around to come up behind you again
*@The Science Asylum*
7:00 Does that means that photons are 1-Dimentional? or even 0-Dimentional? They don't experience Any direction nor time?
Just wait until you hit the particle-wave duality in better depth. Photon collector boards are a crazy invention, but simple. Haha
Although the information is a 'little crazy' the approach taken here in The Science Asylum is awesomely crazy, the approach...yes.
Excellent video Nick. You're a great explainer.
I saw the title, guessed the result, and assumed correctly the meat of the video, and was STILL surprised by the content.
Great video!
Time cop: "I'm looking for a photon that just ran out of time."
Photon: "You aren't even real!"
Hahahaha
Irony
He is so underrated
I just found this guy's channel today. he's great.
@FlatBreadSub we know.
criminally underrated
Facts
Never thought about it, but Mass being an emergent property would mean that reality itself is an emergent property and not a fundamental one.
The implications of this might mean we can at some point (if we can alter emergent interactions) alter the fabric or reality itself.
A world in which literally anything is possible.
I'm not sure how the emergent nature of mass translates into reality itself being emergent.
OMG this feels like an entire episode of answering one of my comment questions here. Realistically, probably a coincidence but this still REALLY made my day.
Always informative. He explains science very well. Always enjoy the content.
Happy 250K Subscribers!
Thanks! 😃
Question: from our point of view a photon is emitted somewhere, travels in some direction and is possibly later absorbed or scattered. However for the photon this is all a singular “event”. Does this imply that all photons are causal connections that will ultimately always be scattered or absorbed, e.g. all photons must have a destination?
Would also like to know
I had this question in my mind for a loooong time. I appreciate having an answer from someone I trust more than my intuition... But it is so frustrating! 😅
Having photons not experiencing time, I can deal with it.
Having photons not experiencing space, I kind of get it.
But the implication that it doesn't experience universe gets me confused, in the sense that if there is a wall, photon will be absorbed or reflected by it, it's not as if he doesn't interact with this universe. So in a way, without time and without space, there seems to be an experience of this universe!
I first thought about this when presented with the double slit experiment actually, I was wondering if the fact that there is no space from photon perspective could explain something. I never reached a conclusion.
This channel increases curosity for science and triggers mind to think in a new and better way. Appreciably good work.👍👏
You ask all the right questions and you answer them in all the right ways, thank you
I was desperately waiting for your new video.
I teach physics and no one dares to mess with me for concepts in physics.
It's due to your clarity in concepts.
Retire o disco da geladeira, cubra com o recheio e dobre o excesso de massa sobre as maçãs. Cubra o que ficou exposto das maçãs com o crumble, pincele as bordas com o ovo e polvilhe mais crumble sobre as bordas. Asse por 45-60 minutos em forno preaquecido a 180ºC (médio)
Great vid. I've wondered about this for a while. As a follow up, how, in a spaceless, timeless existence does a photon move through the Universe? Or is it everywhere at once? How for example can we see back in time if the photons don't move? Or if they do move, how if they don't experience time? 🤯
Photon is not moving in the photon reference point, it only moves in our reference point. It is unchanging, so from the photon perspective there is no time and space, but from ours' it is different. So, unchanging photon moves through the Universe without experiencing time, the only reason we can see it as moving because we experience time.
@@dmitriy4708 Thank you
5:26 thinking about those injured my brain. I better go to l'Hospital.
Your condition seems indeterminate
L'Hospital's rule is a pretty common tool to use to solve them... well, at least the first two.
@@ScienceAsylum i can understand 0/0 and ∞/∞ and 0^0 and ∞-∞ being indetermined, but why is 0*∞ not determined as 0? and ∞^0 as 1 since we know ∞ only has all real or computable or incomputable numbers, no matter what it is, as long as its a number, shouldn't we call it 0 and 1 and be done with it? I'm sure smart people have thought this through but i cannot really get why this would be interminite. infinity is more of a concept but nonetheless, it is essentially just a over grown variable like x or y taht is just taking place of the largest number- or even could be the "constant" like e or pi but for the largest number- either way, it will still yield a number since i think we can say for sure the end of the number timeline wont end with 0 nor anything incomputable but rather a number.
@@Nosirt f(xn)=o and then f(xn)^n =0 even if n-> infinity but if f(xn) -> 0 that may not be true.
@@Nosirt Let's say that that infinity can be so big that it "overpowers" the zero in the zero times infinity case. Infinity is NOT a real number, it is used in analysis that something grows without bounds. In the same way in analysis the zero is not actually zero, it is "bigger number you put in closer to zero you get" so in this context it again isn't a well behaved number. And I repeat again: infinity is not a real number, in here it is a shortcut, it can be a number but you gotta define your number system differently then (for example as transfinite ordinals or whatever) to make your operations make sense.
Actually the best science channel I have seen. Enjoy a lot your content.
Mind BLOWN!!! Love, love, love your videos. Would love to see a video on the single electron theory.
My brain: how majestic and beautiful this universe is... This properties of matter and energy shaped my own structure and mind so it can wonder and explore this sea of information.
My mouth: holy shieeet!
My mouth: bruh
The fact photons are spaceless and timeless kinda breaks the concepts of wavelength and frequency, at least in their frame of reference. That's what happens when you keep using classical terminology to non-classical things.
Also, does a single photon travelling through a medium with a refractive index bigger than 1 makes it suddenly experience time and space, since the speed of light supposedly becomes lower? The interaction with the particles of the medium could be considered a kind of confinement then?
The speed of light doesn't change when it moves through water. The trajectory just becomes more erratic. The wave portion of the photon increases as the particle path becomes more erratic which we see as refraction, or frequency change in the case of the non-visible spectrums.
Consider that each time a photon interacts with a particle that photon is "destroyed" and an other one is "born" so there wouldn't be interactions for that photon to tick its clock.
The path it's just more erratic for the light that we shine through it as a whole so for us it seems slower on average. The singles photons just get destroyed and recreated or zip through the medium at light speed, the average of those velocities is proportional of what we call refractive index
It's called refraction.
Imagine getting launched out of a star at the speed of light and hitting the eyeball of a human thousands or millions of light years away without experiencing any time at all. The experience would be nothing at whatsoever, because time and space are fundamental to experiencing anything. It's like falling asleep only to wake up many years later.
More like falling asleep and never waking up again since the photon does not experience anything at all.
Great video! I finally understood the indeterminate forms.
Wow very enLIGHTening! As a hobby I read loads of books and articles on things from nuclier physics to quantum field theory to cosmology, so when I say I understood light in a new way; thats an award worthy explanation!
Wow, that's just so weird how everything is kind of just made of waveform trapped in a space and creating momentum (I guess?). Very mind blowing!
Is the whole energy of a photon is kinetic energy?
If it is, then how the energy of light changes between deferent wave amplitude if it always at the speed of light
Im a huge fan of the science asylum please answer me
have any anwers?
please reply in the comments
@@idomeir9912 aswer fast fast
I may be wrong here but... the energy of light changing with wave amplitude is only true for "light" as a collection of photons, an emergent effect. For a single photon that would not be true because the energy would be E = hf, only proportional to frequency and the plank constant. This question gets to the heart of wave-particle duality. The classical wave model and particle models are both approximations of "reality". It can be argued that we don't really know what reality even is at the moment, but our best guess would be the "wave" model conceptualized in quantum mechanics.
Nice. Never thought about it
Pink Floyd shirt... well played sir.
Oh yeah..i love pink floyd too!
And he has been wearing this shirt for like 3-4 years
You are really great🙏👍
Such a fascinating topic to explore. Thank you.
Well that would be enlightening
*ba dum tss!* 🥁 😂 🤣 😅
Since a single photon would be weird to create an object but a lot of them could do so, could a laser beam (many photons with same polarity, phase etc) create a human being that way then?
Single photon is a single photon. The only stuff you can make out of it is a photon.
@@matmirza5376 I think that instantaneously photons can (at least theoretically) become a positron and an electron, each of them half the energy of the photon, so if I'm not wrong, a photon can create something other than a photon. But my point is, could a lot of photons in the same state have the same effect as only one photon?
If gluons are the "glue" for quarks, maybe photons would "glue" leptons to form a hadron from electrons instead of quarks or something?
geometrically? pretty weird still, you'd heat the air around the supposed "you"
@@georgesimos4914 Well, you're not wrong. A disintegration of a photon can generate another two photons or an electron-positron pair. This last disintegration can happen if the photon has an energy of at least 1,02 MeV, the mass of the electron + the mass of the positron. Normally it occurs in the vecinities of atomic nucleus.
I haven't found a channel which explaines science topics better than this one.
In particular I enjoy the pace of narration, the illustrations are fantastic... etc. etc. p.p.
Yeah, using miles is a bit off for non-US citizens (ok, metric was presented in brackets), this drives me crazy in some videos, although I am crazy already... But its ok to be a bit non-metric in science ;-)
I always thought that light is not timeless because it is timeless relative to us but not to the photon itself of which is affected by gravity among other nuisances. Nuisances of which can only affect the photon if it “experiences” time.
It's not affected by gravity from _its own_ point of view... because from its own point of view nothing exists so nothing happens. Light is affected by gravity from _our_ point of view.
@ *The Science Asylum*
Thanks for shinning light on the situation. It’s hard to comprehend when something does not experience time.
the way you explained this was very digestible for my brain.
So that's why photons can't move slower than light! Finally got the answer I have been thinking about
What would happen to the momentum of photon in a optically denser medium where the speed is lesser than speed of light? It would be counterintuitive if it would go to zero...
Saying light slows down in a material is just an over-simplification for the wave mechanics going on in that material. If you want to model light like that though, you'd have to assume it becomes massive inside the material.
Really great Mashup of some of your best content into a GedankenExperiment, that Einstein would definitely approve XD
A real treat for the dedicated viewer!
1:04 Nice explanation of Light *Confinement* / *KugelBlitz*
You made a really awesome video and cleared all my doubts.. by the way love from india
Short answer: we'd be lighter.
Good pun
@@smartart6841 thank you boss.
So if both photons and gluons have no mass and confined photons would have mass, maybe the Star Trek TNG holodeck makes a bit of sense after all. Holodeck matter is created with photons instead of normal matter.
"Heaven is the place where nothing really happens..."
David Byrne ("Talking Heads")
Loved the video. Love what you do. Thank you for making physics make sense to the rest of us.
Amazing video nick! I have only one question, can anything occupy space but not experience time or vice versa( can anything experience time but not occupy any space)See i know it is a weird question but please answer it. It is very important to me
Then I wouldn’t be obese. I’d be quite light, in fact.
"If you were made of light, because the light is confined, you'll still have rest mass"
Why do I hear the X files soundtrack? 🤔
th-cam.com/video/j2d6T5G2rrY/w-d-xo.html
@@ScienceAsylum 😂
@@ScienceAsylum
😂
I....Want to believe!
@@ScienceAsylum By the way, I explained this of the light to my nephew and he asked: But how do you contained light?
My brain crashed, had to be rebooted and it's still repairing some corrupted files.
th-cam.com/video/vS43ZgcQ_hE/w-d-xo.html
@@showcase-me 😂
What is the opposite of this?
How old is a black hole from it’s perspective?
Age has no meaning to a photon.
@@ScienceAsylum
So where was it before I turned my flashlight on?
@The Science Asylum - sorry perhaps my question was phrased wrong.
If a photon travels at the speed of light for 2 years, from the photons perspective it is instant. No time elapsed, only 2 years to the observer.
So how old would a black hole be from a black hole’s perspective?
Age is just a number. 😉
Inside a black-hole, time becomes space. The Future is a place (that place is The Singularity)
Awesome video, very illuminating.
You are the best best!
I can’t wait for the your next video!
Well, contrary to the status quo I might've become a bright person
I see what you did there ;)
So earlyyyyy the last time.......
Yeah the last time i was this early i was rooting for 100k subs
And nick engages with the audience the most
And his videos really get me rid of anxiety
And this channel will soon become one of the best ste(A)m channels, it already is but the subs and views as well
And thanks
And nick is a good person from what i know , i dont need to say that but still the world needs such peeps who are good,
I am slow, but light is also with respect to universe's hugeness
Yet The Universe is tiny and quick with respect to light 🙃
@@discretelycontinuous2059 I don't think so
@@freezinfire I meant it in the sense (as explained in the video) that the point of creation and destruction of the photon is the same point in both time and space from the photon's perspective
@@discretelycontinuous2059 ok, and I meant with respect to the volume of the universe (which is a lot of light years) and speed of light (only 300000000 m/s)
@@freezinfire I understamd what you meant. And certainly it is. It is interesting to think that at light speed the universe is length-contrqated to 0 and time dilated so that it can arrive at any time in the future, potentiall billions of years "in an instant" (within the photon's reference frame)
Excellent..... thanks 🙏.
Man you are awesome i had this question in mind few days ago.. thanks
my nama jeff
what XD
Papa Flammy here? No, no, no. Maths and Physics don’t mingle. They are and have been bitter rival sciences forever.
Good morning fellow mathematician
Papa
U everywhere these days on math and science channels
Anyone else began thinking about "the doctor" from startrek voyager slapping people to demonstrate that he has mass?
First
Confirmed!
Love this channel, only really smart people teach hard courses in an easy way
I like being made out of what I am made out of, but I am intrigued to learn a hell of a lot more about the speed of light.
Then why does it still take "time" to travel through universe even for a light, which is a thing that does not experience time?
It only takes time from _our_ frame of reference... not from the photon's.
@@ScienceAsylum I'm a philosopher and philologist trying to understand physics, so do forgive me if this is a ridiculous question. I wonder if gluons might actually be a type of photons, or maybe actual photons. That would mean we ARE made of light.
You are a great explainer.
been waiting on that Fast Fast moment for so long!
Your content is so inspiring
You should totally put more things in the doobly-doo. Love that thing!
This is an amazing video👌👌💗