Our best guess for the CFLs is that the glass being broken interrupts the electrical current needed to light the gas inside, and the "speed" of that current interruption would essentially be the speed of electricity (very fast).
A voltage drop makes sense, also thought the change in pressure since light bulbs are never at the same pressure as the surrounding air. I guess you could control the voltage and record the moment the bulb shuts off to see if the dropping voltage causes the light to change color. Or perhaps even intentionally overload the bulb to watch it blowout in high speed.
For the first set, it's not the filaments that arc, it's the frames that suspend the filaments. So those leads are much less resistance and the connection ends up transferring the full 120v, the filaments have a very high resistance so as the electricity passes through, they heat up. For the fluorescent bulbs, the glass is filled with high pressure mercury vapor that is conductive, but it glows with ultraviolet light. The glass is coated in phosphorus powder and zinc sulfate, I think. Either way, the phosphorescent powder absorbs the high frequency short wave ultraviolet light and releases a lower wavelength white light. It works like glow in the dark pigment, except the amount of time it takes to release the energy is much more rapid. If the mercury vapor is not under pressure, it won't conduct the electricity. So you aren't seeing the gas release or the current drop, you are seeing the "glow" fade away. I'd bet it would look just like that if you flip the switch off. A crt (cathode ray tube) monitor or television has the same sort of power coating the inside of the screen, except it used a magnetron emitter and low pressure gas, I think that would be a wykked video to show. Just take the cover off , power em up, and shoot em up. Through the side, through the yoke on the back, and through the screen directly.
@@iloveallthepeople The drastic colour shifts are probably because the different phosphors (note phosphors and phosphorus are different things) fade out at different speeds. There's usually a few phosphors which peak at various colours mixed together to get a decent quality white light, so it looks like the blue phosphor dies first (making the bulb yellow), with the red phosphor next (leaving green to fade out last).
Well Taofledermaus has been doing this for like 10 years but it’s more informational about new and fan designed types of shotgun slugs. He does slowmo in his videos but these guys are definitely closer to the Slowmo Guys where the focus is on the destruction and what’s happening.
They do actually have firearms content and there is Taofledermaus and Officer Gregg. Ballistic High-Speed is definitely killing it with the quality. Slo-mo guys have a great video using mirrors to film what it looks like if the camera or POV was being shot at.
I also think this would be pretty interesting. I've been wondering about the difference between no flash suppressor and having the flash suppressor/muzzle brake.
What's more interesting is watching how rifle barrels whip and receivers flex. Very surprising to those who think rifle barrels don't wobble like a buggy whip.
Hello, Chris here from Going Ballistic. Great channel. I would love to do a collaboration with you guys and some 50 BMG SLAP rounds. How can we get in touch with you?
Since the color change is so fast, it can't be a chemical effect or anything reacting. The only thing moving that fast is electric charge. The destruction of the coating probably disrupts the electric charge and the plasma is breaking down. What can be seen as yellow and green light could be the afterglow of the fluorescence inner coating fading away. Depends a bit on what the coating is made of. It usually is made of different materials with each fluorescing in a certain wavelength, which will combine to what is seen as white light. When the plasma drops its charge one of those fluorescence compounds will stop contributing immediately (maybe needs the highest charge?) and white will turn yellow, which slowly fades to green. But I am not an expert on this topic. So it is just my theory^^
I'd like to see y'all do a video of the actual point of expansion of various hollow point rounds into ballistic gel. Love the channel y'all do a good job
These CFLs are "glow discharge" plasma (low pressure around 2~3 Torr), as soon as the glass cracks nitrogen enters the plasma changing color. It doesn't need much to change color. As the chamber is at low pressure N2 moves very fast inside. N2 has a typical orange color plasma.
My guess is the CFL bulbs saw the bullet breaking in and were scared yellow...and then got sick and turned green after the bullet passed....lead poising maybe? :) Great video!!! I love your work, thank you.
The colors you see are sodium and mercury vapor burning. Sodium is highly reactive so the millisecond where the air and water vapor enters the broken bulb the first burn is the sodium (yellow), then it transitions to appear green as the mercury vapor burns. Mercury vapor tends to burn blue, but since the sodium vapor combustion product is yellow, it makes it look like it's green
Hey, just an FYI, there's no sodium or burning going on (most likely). I can't say whether the slight amount of Hg would actually spontaneously combust upon exposure to air BUT I do know that the colors shown aren't from that. I gave a fuller explanation above but essentially the "florescent" part of a florescent bulb is the white powder coating on the inside of the bulb which absorbs UV light from the gas and floresces back visible light. When the UV light stops then the powder "powers down" slowly losing energy and radiates a progressively smaller amount of less energetic light. To prove this go into a dark room and let your eyes totally adjust to the dark and have either a fully covered light that's been light for a while or have someone else bring it in. Cover your eyes so no light gets through your lids. immediatly after turning the light off open your eyes and you'll see it turn from bright green to ever duller, but it can last quite a while, a number of minutes at least. I think the yellow is either the stepdown transition from highly energised white to green OR immediately after losing current you have an increasing see-saw equation of some of the powder still being high energy white mixed with more and more low energy greeen and the effect is yellow. Anyhow, happy sciencing!
This channel mixes both worlds of the coolest things TH-cam has to offer. Guns and high velocity footage in the sparkliest, prettiest and detailed form yet to be offered in both quantity and quality. It's just magnificent.
Just came across your guys channel and love it. Took my two favorite things high speed slow mo and guns and combine them and made awesome content. Feel like it's a real life adaptation of the old korn video Hope you guys kept growing.
Is that the actual sound though? I didn’t know there was such things as high-speed audio capturing devices! If so that’s freaking awesome that you do both in your videos!
I believe the CFL bulbs flashed yellow due to trace amounts of Mercury vapor being forced under higher pressure upon impact; then turned green/blue while it dispersed into the air introduced afterwards before balancing out to 1 atmosphere
The LED bulbs are usually pressurised with helium, which is probably contributing to the 'blowback' of fragments you see. This is to help transfer heat away from the LED 'filaments', which need to stay cool to have a good lifespan. Helium is used because it's got very high thermal conductivity.
We need to see a politician’s face as s/he realizes s/he just lost an election. (Any politician, any party, not dumping on anyone; just the ego required for that life choice: might be fun to watch in dissolve…. 😂)
We have our ballistic torso video where we shoot it with both .45 and 9mm. We also shot a bulletproof vest with a .45. But this caliber will definitely be featured in future videos as well!
@@BallisticHighSpeed Yeah, I saw the ballistic torso video. That was the very first video I've seen from you guys and it was interesting to see how .45ACP actually did have a measureable difference in performance on target vs. 9mm. Many others did the test but on separate dummies without slow mo, so the subtle differences in wound size weren't as noticeable. What that means in the real world, I'll leave it up to others, but it was a very fascinating video.
CFLs change color the moment the plasma inside collapses: this plasma is emitting UV light, which in turn "powers" secondary emitters (rare-earth doped compounds) in the inside of the glass. These compounds emit light of longer wavelengths (compared to UV) which, when combined, give the impression of "white" light. As these compounds can store energy for a few milliseconds but different colors are differing in their ability to glow w/o UV input, *the result is a color shift to green when red/orange stops emitting light before the green emitter does.*
Also can you, please, challenge The Slow Mo Guys to film that mysterious yellow glow with their 400k-1kk fps cameras? Don't be jealous, I love gun videos more than scientific ones anyway.
Hello, Ballistic High-Speed! It's a very cool video, thanks a lot! Could you film in slow motion the moment the CFL is turned on? If you will film some with this lamps.
could you guys try shooting a newtons cradle with different calibres? I saw a video recently of a 9mm shattering on one and I think it would be interesting to see how other calibres would fair
Information travels at the speed of light. The glass cracking I believe is happening at the speed of light and the color change is probably only slightly behind that.
Well, what happens with the colour change of the fluorescent lamps is roughly this: First some context how those lamps work from Wikipedia: "A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow." "A typical "cool white" fluorescent lamp utilizing two rare-earth-doped phosphors, Tb3+, Ce3+:LaPO4 for green and blue emission and Eu:Y2O3 for red. Several of the spectral peaks are directly generated from the mercury arc. This is likely the most common type of fluorescent lamp in use today." Now as the glass breaks, normal air rushes in and displaces the mercury plasma. As soon as the column of mercury plasma is broken electrical resistance surges up which interrupts the electrical current. Thus the mercury plasma is quenched simultaneously along the entire length of the tube. Thus the direct mercury light (light blue) vanishes leaving only the afterglow of the fluorescent materials which makes the tube look yellow. Without excitation the by the mercury light the fluorescence quickly decays with the green fluorescence of Tb3+, Ce3+:LaPO4 lasting a bit longer than the red one from Eu:Y2O3 which explains the colour shift to green.
Air rushing in cannot explain the change in color. The color change is too fast to be captured by these cameras and air can only rush in and change the environment inside the tube at the speed that air molecules travel, the speed of sound. It must be electromagnetic and travel at the speed of light and that is why it can’t be captured by these cameras. The glass breaking breaks the circuit. Electricity stops flowing. All fluorescent compounds perceive a change in their environment simultaneously.
@@lancemelissakeyes4174 Sure, and that is exactly what I wrote: "As soon as the column of mercury plasma is broken electrical resistance surges up which interrupts the electrical current. Thus the mercury plasma is quenched simultaneously along the entire length of the tube." I.e. the mercury plasma is displaced locally, that interrupts the current, which quenches the plasma everywhere.
The green glow may be some of the copper atoms from the bullet surface ionising as it passes through the lamp. Or, it’s the low level glow from the phosphorus compound which is more green at low excitation compared to yellow/white at high excitation levels.
I would imagine it being the low excitation, because if you'd increase the voltage, the light temperature would rise towards white/blue light temperature.
I would believe the reason they're instantly turning yellow is the shockwave is compressing the gas inside causing a different reaction in the release of energy then the oxygen is introduced in the mix which turns it green.
It turns yellow because of phosphorescence. As soon as air introduced the uv emission from the mercury vapor stops so the phosphor coating is no longer receiving light cause a kind of "glow in the dark" effect. You can see the same effect when turning the bulb off.
Awesome! My theory as to why the bulbs change colours very fast is that as soon as air enters, the conductivity is reduced resulting in less amps going through the bulbs.
It's crazy that this high quality content just gets discovered these days. That cam costs more than $100k. I mean thats a huge investment. Even renting it daily cost around $2500. I don't know how you guys managed it but nice content guys keep on going.
I was admiring the small details in the editing more than really paying attention to the content of the video a lot of the time, so maybe the editing is bad because its so good? 🤣🤣🤣. Thoese bulbs INSTANTLY going yellow was crazy though 🤯. Good work! 👍
@12:10 I assume the color change is due to the activated mercury vapor inside those bulbs as: emission line spectrum of mercury vapor: The strongest peaks of the emission line spectrum are Line spectrum of mercury vapor. The blue-green tint of mercury vapor lamps is caused by the strong violet and green lines. Wavelength (nm) Name (see photoresist) Color 184.45 ultraviolet (UVC) 253.7 ultraviolet (UVC) 365.4 I-line ultraviolet (UVA) 404.7 H-line violet 435.8 G-line blue 546.1 green 578.2 yellow-orange
My assumption as to why the cfl's turn yellow right away might have something to do with the leading shock wave. I'm wondering if the shock wave is dispersing some of the gases inside the tube causing the electrons not to excite.
Dear Ballistic Highspeed, I am from the future, and I have traveled back in time to warn you to wear lots more PPE armor for your RPG video! I'm about to go back further to warn Scott to not buy that old radial arm saw he's been looking at. He's gonna need his thumbs later.
The CFL turning yellow isn't due to shockwave or oxidisation effects. The key is to realise the bulbs are NOT turning yellow. When you remove the blue component from 'white' light, the result is yellow. The blue comes from the electrical excitation of the gas. The yellow is the effect of the phosphor, turning some of that blue into yellow light (hence the overall effect is 'white'). The excitation generating the blue light IMMEDIATELY stops once the glass is compromised and ordinary air leaks in. I guess the phosphor coating has a short period of luminescence (even longer for the green). Hence immediately appearing yellow.
6:02 My theory: The initial white glow is caused by the gasses being at a certain temperature (like 5000K ?) in order to glow white -- what's known as black-body radiation -- and the release of pressure makes the temperature immediately drop (boyle's law) into a more yellow range (4100-3500 K?) but that doesn't really explain the green range seen at last unless that is either an artifact of pressure waves in the tubes (??) or possibly an illusion caused by the shifting of the spectrum of light emitted towards the camera? So, um, yeah, interesting.
@@BallisticHighSpeed May I suggest a vídeo idea..? For You increíble slow-mo camera capabilitys... I think that to many people .. including me... Would like to see how the bullets of all the calibres you have.. (including the explosive ones if posible).. React/deform when hitting a Big Steal Block/Plate/what you can get in slowmotion If You have seen for example when Edwinsarkisian shots pure Steal blocks or thick paneles of some hard material The resoults make you wonther how it would be in slowmotion If the idea is not to clear yet Imagine the deformation or perforation that causes a tank round to the Armor of an other tank Imagine see on slowmotion how hard materials like Bullets or Armor interact like there where Butter 🤔
just a blind guess but Im gonna say its the pressure increase that does the color change, as soon as you get a change in pressure ( increased) the voltage required to keep the color the same has to increase, since the voltage wasnt increased, the ionization factor of the gas dropped at that specific point and since the current flow thru the gas is moving nearly at the speed of light, it changes color that quickly, as the pressure increases even further the loss of ionization occurs and the bulb goes out... the same thing can occur in argon/krypton mixed gas lasers, the color of the ionized gas changes color with pressure changes and they run at a near complete vacuum...
That was completely unexpected with the second light bulb. I think I was as shocked as you guys. When I saw it I was like ( what oh my God wow) I did not expect it to happen. You can make a lot of money or win a lot of drinks in a bar. If I told you that this kind of light bulb turned green if you break it would you believe me. If not you owe me a beer lol
Fluorescent Lightbulbs inert gas, like argon, along with mercury. Both gas are high state energy, (Plasmon or Ion) dischare lower gas state (Mercury change state quick glow Yellow, Argon glow green)
Hi guys. i'm a retired nuclear and electrical engineer and for a hobby I make neon signs and art. What you're seeing in the CFLs is the phosphor afterglow. CFLs use multiple "colors" of rare earth phosphors, especially the ones designed for photography. Each color has a slightly different afterglow period. When your bullet breaks the glass, the glow discharge instantly extinguishes and what remains are the various afterglows. You can verify this by shooting a high speed video of simply turning the lamp off. It will glow white for a bit while the internal capacitor discharges but they you'll see the ever-changing color of the afterglows.
My guess with the CFLs... Whatever gases are inside must react pretty fast with some atmospheric gas (or maybe eve just the cheer kinetic energy from the bullet or the metal in the bullet? Idk) and exite its electrons to make them emit photons. Those are just bombarding the remaining gas and we get those colors from it. I am pretty sure I'm not 100% right and I'm breaking (or bending?) a few physics rules, but i also think it has to be something along those lines
ANSWERS: So as for the yellow green color in the florescent twisties... They work with a gas (Argon and 4mg Hg) that produces UV light upon energization. That UV light then hits that white powder coating on the inside of the bulb and it absorbs the UV light becomes excited and its electrons jump an orbital higher and immediately go back to their original orbit losing a certain amount of energy in the form of a photon of less energetic but visible light that you see. The changing of color to yellow and then green is the florescent powder slowly losing energy once the current is broken, you can see, in a close up, the powder collecting as it sleuces down a twist and out of a broken area. You will see the same thing when simply turning the light off in a dark room without looking at the bulb as its brightness will reduce your ability to see the much dimmer wind-down and if you really dark adjust your eyes you'll be surprised just how long they stay illuminated. I'm actually kind of surprised that you guys didn't simply try turning the light off in slomo.
Tannerite does the same thing, instant reaction upon impact... the moment the bullet hits, the entire inside face was already reacting faster than the speed that the bullet travels...crazy physics there!
5:12 That moment when you’re watching a bullet smashing light bulbs in super slow motion and then realize you might be witnessing something related to the famous Double Slit experiment... 😳
The color change has something to do with fluorescence, and that is something about molecules absorbing high energetic photons which cause electrons to radiate in two steps and produce light..., something like that. And that stuff happens pretty fast. Fluorescence is most likely the reason for the green color, and some UV, which your camera didn't see.
Please don't forget to also create TH-cam Shorts and Tik-Tok videos for people, who can't handle full-size videos o) I bet it will help a lot in your climb to video trends.
I think I’ve already said, but I love the sfx you add in. Slo mo for the most part doesn’t capture sound, and what you get wouldn’t sound very interesting
Pressure drop changes the density of the medium, resulting in a change in wavelength. That's why it goes from white to yellow to green. I'm not a physicist.
The yellow is because the glass broke. That's where the electricity flows, the surface of the glass. Once that broke, the voltage changed, which changes the brightness.
It's the Phosphor losing excitement from the electrical charge, so it is going through the visible spectrum it operates in. Full excitement, makes the Phosphor glow white. Since the Mercury gas is not fully dispersed, nor is the Argon gas (which actually carries the electrical charge) the Phosphor still wants to emit light. CFL's will have a mix of Phosphates that will produce a host of colors. These ones in particular, use the white, yellow and green mix. Each color of Phosphate will emit it's color alone, at different levels of electrons and the amount of Argon and Mercury gasses they use as a conductor. Breaking the glass, will stop the electrical flow, but not the electrons already in motion. As the electrons diminish, the various Phosphates will emit their singular colors in the waning gasses still available. Thus, you get white, yellow, and green, until the electrons can no longer excite the Phosphor.
If the govt hadn’t interfered, we would all have a small nuclear reactor in our garages, providing electricity for our houses, with no monthly water bill.
For the CFL lights and why the my go from yellow to green. There are what’s called phosphors in the tubes. Which emit light when electricity is ran through them. Depending on the phosphor when the electricity is turned off, it will turn yellow to green.
The instant change in color is too fast to be a chemical reaction caused by introduction of atmospheric air. The reaction propagates through the entire bulb instantly but a chemical reaction could only propagate at the speed of sound, which is the speed the individual molecules are moving around. That means the change in color must be electromagnetic in nature. The effects of a change in the electromagnetic environment perceived by the bulb contents responsible for emitting light would propagate at the speed of light so it couldn’t be captured on camera. I don’t really know how fluorescent lights work but I think the bulb passes a charge through the gases inside from one end to the other. As the charge passes through the contents of the bulb electrons are excited and then relax. When they relax from a higher energy state to a lower energy state they emit a photon. We see the photons as visible light. When the bullet strikes the glass the circuit is broken. The electric current can no longer move through the substance inside the bulb that emits light in the presence of a charge. All the substance gradually and simultaneously stops emitting photons. The last compound that stops emitting photons is the compound that emits the wavelength that correlates with green on the visible light spectrum. For some reason the electrons in that compound take longer to relax to a lower energy state.
When y'all shot those energy saving light bulbs they turn purple before they turned yellow then they turn green. If y'all can film at a higher speed film of that a higher speed and shoot it again in the same way and if it has the same reaction you should be able to see that purple first I saw it look again
The fluorescence lamps have the gas. The incident lamps do not have any gas at all as their light comes from the positive and negative of the supply voltage. The color change is the changing of the gas inside the fluorescence lamp.
I think the reason why that last lightbulb sparked bigger than the other ones is because it could’ve been on the end of the circuit so all that electricity had nowhere else to go
Our best guess for the CFLs is that the glass being broken interrupts the electrical current needed to light the gas inside, and the "speed" of that current interruption would essentially be the speed of electricity (very fast).
A voltage drop makes sense, also thought the change in pressure since light bulbs are never at the same pressure as the surrounding air.
I guess you could control the voltage and record the moment the bulb shuts off to see if the dropping voltage causes the light to change color.
Or perhaps even intentionally overload the bulb to watch it blowout in high speed.
Check a four foot fluorescent bulb to see if it has same effect
For the first set, it's not the filaments that arc, it's the frames that suspend the filaments. So those leads are much less resistance and the connection ends up transferring the full 120v, the filaments have a very high resistance so as the electricity passes through, they heat up.
For the fluorescent bulbs, the glass is filled with high pressure mercury vapor that is conductive, but it glows with ultraviolet light. The glass is coated in phosphorus powder and zinc sulfate, I think. Either way, the phosphorescent powder absorbs the high frequency short wave ultraviolet light and releases a lower wavelength white light. It works like glow in the dark pigment, except the amount of time it takes to release the energy is much more rapid. If the mercury vapor is not under pressure, it won't conduct the electricity. So you aren't seeing the gas release or the current drop, you are seeing the "glow" fade away. I'd bet it would look just like that if you flip the switch off.
A crt (cathode ray tube) monitor or television has the same sort of power coating the inside of the screen, except it used a magnetron emitter and low pressure gas, I think that would be a wykked video to show. Just take the cover off , power em up, and shoot em up. Through the side, through the yoke on the back, and through the screen directly.
Thanks gents! Love the videos and definitely need more! Come on, it’s not that cold!!!
@@iloveallthepeople The drastic colour shifts are probably because the different phosphors (note phosphors and phosphorus are different things) fade out at different speeds. There's usually a few phosphors which peak at various colours mixed together to get a decent quality white light, so it looks like the blue phosphor dies first (making the bulb yellow), with the red phosphor next (leaving green to fade out last).
Finally we have the gun equivalent of the slo mo guys! I can't wait for the Demo Ranch and Kentucky Ballistics collabs.
Well Taofledermaus has been doing this for like 10 years but it’s more informational about new and fan designed types of shotgun slugs. He does slowmo in his videos but these guys are definitely closer to the Slowmo Guys where the focus is on the destruction and what’s happening.
@@jellymop I've been watching him for years but his channel is almost entirely shotgun related.
They also live in CA, so… they might be showing everything they can, lol
They do actually have firearms content and there is Taofledermaus and Officer Gregg. Ballistic High-Speed is definitely killing it with the quality. Slo-mo guys have a great video using mirrors to film what it looks like if the camera or POV was being shot at.
I said the same . I'm still watching these guys there definitely needs to be a big collab alot of dummies explosives and bullets .
I would love to see what muzzle brakes, flash hider’s,compensaters, suppressors and other muzzle devices do in slow motion
I also think this would be pretty interesting. I've been wondering about the difference between no flash suppressor and having the flash suppressor/muzzle brake.
What's more interesting is watching how rifle barrels whip and receivers flex. Very surprising to those who think rifle barrels don't wobble like a buggy whip.
Hello,
Chris here from Going Ballistic. Great channel. I would love to do a collaboration with you guys and some 50 BMG SLAP rounds.
How can we get in touch with you?
Glad to have you here! Shoot us an email!
ballistichighspeed@gmail.com
Oh hell yeah…. I hope this happens 😁👍👌
Since the color change is so fast, it can't be a chemical effect or anything reacting. The only thing moving that fast is electric charge. The destruction of the coating probably disrupts the electric charge and the plasma is breaking down. What can be seen as yellow and green light could be the afterglow of the fluorescence inner coating fading away. Depends a bit on what the coating is made of. It usually is made of different materials with each fluorescing in a certain wavelength, which will combine to what is seen as white light. When the plasma drops its charge one of those fluorescence compounds will stop contributing immediately (maybe needs the highest charge?) and white will turn yellow, which slowly fades to green.
But I am not an expert on this topic. So it is just my theory^^
I thought about raylight scattering, though I'm not 100% sure
Excellent theory, I was thinking the same thing.
I'd like to see y'all do a video of the actual point of expansion of various hollow point rounds into ballistic gel. Love the channel y'all do a good job
Thanks for the suggestion!
@@BallisticHighSpeed yes please!
These CFLs are "glow discharge" plasma (low pressure around 2~3 Torr), as soon as the glass cracks nitrogen enters the plasma changing color. It doesn't need much to change color. As the chamber is at low pressure N2 moves very fast inside. N2 has a typical orange color plasma.
th-cam.com/video/PjVyfjIlRcw/w-d-xo.html
My guess is the CFL bulbs saw the bullet breaking in and were scared yellow...and then got sick and turned green after the bullet passed....lead poising maybe? :) Great video!!! I love your work, thank you.
The colors you see are sodium and mercury vapor burning. Sodium is highly reactive so the millisecond where the air and water vapor enters the broken bulb the first burn is the sodium (yellow), then it transitions to appear green as the mercury vapor burns. Mercury vapor tends to burn blue, but since the sodium vapor combustion product is yellow, it makes it look like it's green
Hey, just an FYI, there's no sodium or burning going on (most likely). I can't say whether the slight amount of Hg would actually spontaneously combust upon exposure to air BUT I do know that the colors shown aren't from that. I gave a fuller explanation above but essentially the "florescent" part of a florescent bulb is the white powder coating on the inside of the bulb which absorbs UV light from the gas and floresces back visible light. When the UV light stops then the powder "powers down" slowly losing energy and radiates a progressively smaller amount of less energetic light. To prove this go into a dark room and let your eyes totally adjust to the dark and have either a fully covered light that's been light for a while or have someone else bring it in. Cover your eyes so no light gets through your lids. immediatly after turning the light off open your eyes and you'll see it turn from bright green to ever duller, but it can last quite a while, a number of minutes at least. I think the yellow is either the stepdown transition from highly energised white to green OR immediately after losing current you have an increasing see-saw equation of some of the powder still being high energy white mixed with more and more low energy greeen and the effect is yellow. Anyhow, happy sciencing!
This channel mixes both worlds of the coolest things TH-cam has to offer. Guns and high velocity footage in the sparkliest, prettiest and detailed form yet to be offered in both quantity and quality. It's just magnificent.
You glazin dawg
I would like to see you shoot some canvases with wet paint on them or paint cans just paint in general
This channel is criminally underrated
Just came across your guys channel and love it. Took my two favorite things high speed slow mo and guns and combine them and made awesome content. Feel like it's a real life adaptation of the old korn video Hope you guys kept growing.
We’re glad to have you here!
The sounds effects of the slow motion shooting is top-notch... and the quality of your videos even more, thank you. Keep em' coming!
We appreciate that!
Yeah, I’m just as impressed with the sound as the visuals. Awesome footage and the editing is great!
Is that the actual sound though? I didn’t know there was such things as high-speed audio capturing devices! If so that’s freaking awesome that you do both in your videos!
@@RexSkittles all sounds effects are created from other elements. Thunder, small explosions, etc with effects added such as reverb and pitch bending
I believe the CFL bulbs flashed yellow due to trace amounts of Mercury vapor being forced under higher pressure upon impact; then turned green/blue while it dispersed into the air introduced afterwards before balancing out to 1 atmosphere
The LED bulbs are usually pressurised with helium, which is probably contributing to the 'blowback' of fragments you see.
This is to help transfer heat away from the LED 'filaments', which need to stay cool to have a good lifespan. Helium is used because it's got very high thermal conductivity.
Just imagine how many things we are missing in daily life just because they happen much too fast to see it !!
We need to see a politician’s face as s/he realizes s/he just lost an election. (Any politician, any party, not dumping on anyone; just the ego required for that life choice: might be fun to watch in dissolve…. 😂)
Given how slow .45ACP is, as y’all mentioned, I’d love to see more things shot with this caliber.
We have our ballistic torso video where we shoot it with both .45 and 9mm. We also shot a bulletproof vest with a .45. But this caliber will definitely be featured in future videos as well!
@@BallisticHighSpeed Yeah, I saw the ballistic torso video. That was the very first video I've seen from you guys and it was interesting to see how .45ACP actually did have a measureable difference in performance on target vs. 9mm. Many others did the test but on separate dummies without slow mo, so the subtle differences in wound size weren't as noticeable.
What that means in the real world, I'll leave it up to others, but it was a very fascinating video.
@@gameragodzilla We appreciate that. We’ll definitely keep making content
Great content, love to see your channel growing and more people appreciating the effort you put in your videos!
Thanks for watching! We’re glad you enjoy the content
Those CFL bulbs 💡 were hands down coolest looking when they burst never imagined it would turn green
CFLs change color the moment the plasma inside collapses: this plasma is emitting UV light, which in turn "powers" secondary emitters (rare-earth doped compounds) in the inside of the glass. These compounds emit light of longer wavelengths (compared to UV) which, when combined, give the impression of "white" light. As these compounds can store energy for a few milliseconds but different colors are differing in their ability to glow w/o UV input, *the result is a color shift to green when red/orange stops emitting light before the green emitter does.*
Making sense
This is SUCH GOOD FOOTAGE! I was very surprised when i saw the bulbs turn green
Also can you, please, challenge The Slow Mo Guys to film that mysterious yellow glow with their 400k-1kk fps cameras? Don't be jealous, I love gun videos more than scientific ones anyway.
Hello, Ballistic High-Speed!
It's a very cool video, thanks a lot! Could you film in slow motion the moment the CFL is turned on? If you will film some with this lamps.
Awesome video, as always! 👌
I would like to see a powerful airsoft gun vs different things in 42.000fps slow mo🙂
I'D LIKE TO SEE THE FASTEST HEAVYIST TRACER ROUND AT SUPER SLO-MOW VS THE SLOWEST LIGHTEST TRACER ROUND AND COMPARE THE TWO SIDE BY SIDE
I second that motion!!! 🤠👍
could you guys try shooting a newtons cradle with different calibres? I saw a video recently of a 9mm shattering on one and I think it would be interesting to see how other calibres would fair
Watching the bullet sever the wires within the lightbulb is incredible.
Very cool test, I did not expect the big & slow (but massive) .45 ACP bullet to lose that much velocity through just a few light bulbs!
Saw something interesting @7:03 mark. From the moment the weapon was fired, it took 1.87 seconds before the recoil started.
Information travels at the speed of light. The glass cracking I believe is happening at the speed of light and the color change is probably only slightly behind that.
Não se é porque eu tenho uma .45 mais foi o vídeos mais top de vocês kkkkk tem vídeo da carabina cal 357?
Well, what happens with the colour change of the fluorescent lamps is roughly this:
First some context how those lamps work from Wikipedia:
"A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow."
"A typical "cool white" fluorescent lamp utilizing two rare-earth-doped phosphors, Tb3+, Ce3+:LaPO4 for green and blue emission and Eu:Y2O3 for red. Several of the spectral peaks are directly generated from the mercury arc. This is likely the most common type of fluorescent lamp in use today."
Now as the glass breaks, normal air rushes in and displaces the mercury plasma. As soon as the column of mercury plasma is broken electrical resistance surges up which interrupts the electrical current. Thus the mercury plasma is quenched simultaneously along the entire length of the tube. Thus the direct mercury light (light blue) vanishes leaving only the afterglow of the fluorescent materials which makes the tube look yellow. Without excitation the by the mercury light the fluorescence quickly decays with the green fluorescence of Tb3+, Ce3+:LaPO4 lasting a bit longer than the red one from Eu:Y2O3 which explains the colour shift to green.
An excellent explanation. Thanks so much.
Air rushing in cannot explain the change in color. The color change is too fast to be captured by these cameras and air can only rush in and change the environment inside the tube at the speed that air molecules travel, the speed of sound. It must be electromagnetic and travel at the speed of light and that is why it can’t be captured by these cameras. The glass breaking breaks the circuit. Electricity stops flowing. All fluorescent compounds perceive a change in their environment simultaneously.
@@lancemelissakeyes4174 Sure, and that is exactly what I wrote: "As soon as the column of mercury plasma is broken electrical resistance surges up which interrupts the electrical current. Thus the mercury plasma is quenched simultaneously along the entire length of the tube." I.e. the mercury plasma is displaced locally, that interrupts the current, which quenches the plasma everywhere.
Wet Paint on a Canvas would be cool
Just a hypothesis but with the cfl’s I believe it’s an oxidation effect
The green glow may be some of the copper atoms from the bullet surface ionising as it passes through the lamp. Or, it’s the low level glow from the phosphorus compound which is more green at low excitation compared to yellow/white at high excitation levels.
Interesting info! Thanks for that
I would imagine it being the low excitation, because if you'd increase the voltage, the light temperature would rise towards white/blue light temperature.
Yeah, copper… even when there isn’t any copper involved
@@davedave9552 The 45 caliber bullet is copper Jacketed!!! 🤠👍
I would believe the reason they're instantly turning yellow is the shockwave is compressing the gas inside causing a different reaction in the release of energy then the oxygen is introduced in the mix which turns it green.
I would love to see 200,000 frames a second with that lightbulb
My guess is the yellow is caused by the pressure change as the bullet hits the CFL bulbs.
More impressive than the camera work, you seem to have actually sighted in your fire arms.
Should totally shoot some like 400w HPS bulbs, that'd be epic!
This is amazing video work and editing. The slow mo universe is truly incredible. Thank you!🔥
Wait, those CFOs were one of the best shots I've ever seen on TH-cam so far 😳. That was beautiful.
Love the channel I don’t know how these don’t get more views
Thanks! We’re hoping to continue to grow
It turns yellow because of phosphorescence. As soon as air introduced the uv emission from the mercury vapor stops so the phosphor coating is no longer receiving light cause a kind of "glow in the dark" effect. You can see the same effect when turning the bulb off.
The reaction is instant because once air gets induced the flow of current is disrupted through the lamp instantly (basically the speed of light)
4:20 Making of the forbidden curly fries.
Why don't you have more views? You are so proffesional👍
Love your vids!
now this.... is epic!
love the bullet speed specs 👍👍
Thank you much! Glad you enjoyed
I notice the bullet had exited the barrel BEFORE the action unlocked to cycle. Neat.
That's how John Browning designed it!!!🤠👍
Awesome! My theory as to why the bulbs change colours very fast is that as soon as air enters, the conductivity is reduced resulting in less amps going through the bulbs.
It's crazy that this high quality content just gets discovered these days. That cam costs more than $100k. I mean thats a huge investment. Even renting it daily cost around $2500. I don't know how you guys managed it but nice content guys keep on going.
I was admiring the small details in the editing more than really paying attention to the content of the video a lot of the time, so maybe the editing is bad because its so good? 🤣🤣🤣. Thoese bulbs INSTANTLY going yellow was crazy though 🤯. Good work! 👍
That's great! Possibly the best slow-mo videos in all of TH-cam.
Keep on doing your thing guys :)
Thanks so much!
When a lightbulb is hit by a bullet, it instantly pees it's pants.... thus yellow.
We haven’t thought about that.. thank you
Well when electricity moves at 60-80% the speed of light, I’m not surprised why it changed colour so quick.
@12:10 I assume the color change is due to the activated mercury vapor inside those bulbs as:
emission line spectrum of mercury vapor: The strongest peaks of the emission line spectrum are
Line spectrum of mercury vapor. The blue-green tint of mercury vapor lamps is caused by the strong violet and green lines.
Wavelength (nm) Name (see photoresist) Color
184.45 ultraviolet (UVC)
253.7 ultraviolet (UVC)
365.4 I-line ultraviolet (UVA)
404.7 H-line violet
435.8 G-line blue
546.1 green
578.2 yellow-orange
My assumption as to why the cfl's turn yellow right away might have something to do with the leading shock wave. I'm wondering if the shock wave is dispersing some of the gases inside the tube causing the electrons not to excite.
Dear Ballistic Highspeed,
I am from the future, and I have traveled back in time to warn you to wear lots more PPE armor for your RPG video! I'm about to go back further to warn Scott to not buy that old radial arm saw he's been looking at. He's gonna need his thumbs later.
The CFL turning yellow isn't due to shockwave or oxidisation effects.
The key is to realise the bulbs are NOT turning yellow.
When you remove the blue component from 'white' light, the result is yellow.
The blue comes from the electrical excitation of the gas. The yellow is the effect of the phosphor, turning some of that blue into yellow light (hence the overall effect is 'white').
The excitation generating the blue light IMMEDIATELY stops once the glass is compromised and ordinary air leaks in.
I guess the phosphor coating has a short period of luminescence (even longer for the green).
Hence immediately appearing yellow.
The light changes color at THE SPEED OF LIGHT. Your eyes won’t pick THAT up gentlemen. For your information, it’s roughly 1million feet per second.
6:02 My theory: The initial white glow is caused by the gasses being at a certain temperature (like 5000K ?) in order to glow white -- what's known as black-body radiation -- and the release of pressure makes the temperature immediately drop (boyle's law) into a more yellow range (4100-3500 K?) but that doesn't really explain the green range seen at last unless that is either an artifact of pressure waves in the tubes (??) or possibly an illusion caused by the shifting of the spectrum of light emitted towards the camera?
So, um, yeah, interesting.
This vídeo was more interesting that I thot it would be...
Greathings from Uruguay 🇺🇾
Thanks for watching!
@@BallisticHighSpeed May I suggest a vídeo idea..?
For You increíble slow-mo camera capabilitys... I think that to many people .. including me... Would like to see how the bullets of all the calibres you have.. (including the explosive ones if posible)..
React/deform when hitting a Big Steal Block/Plate/what you can get in slowmotion
If You have seen for example when Edwinsarkisian shots pure Steal blocks or thick paneles of some hard material
The resoults make you wonther how it would be in slowmotion
If the idea is not to clear yet
Imagine the deformation or perforation that causes a tank round to the Armor of an other tank
Imagine see on slowmotion how hard materials like Bullets or Armor interact like there where Butter 🤔
just a blind guess but Im gonna say its the pressure increase that does the color change, as soon as you get a change in pressure ( increased) the voltage required to keep the color the same has to increase, since the voltage wasnt increased, the ionization factor of the gas dropped at that specific point and since the current flow thru the gas is moving nearly at the speed of light, it changes color that quickly, as the pressure increases even further the loss of ionization occurs and the bulb goes out... the same thing can occur in argon/krypton mixed gas lasers, the color of the ionized gas changes color with pressure changes and they run at a near complete vacuum...
That was completely unexpected with the second light bulb. I think I was as shocked as you guys. When I saw it I was like ( what oh my God wow) I did not expect it to happen. You can make a lot of money or win a lot of drinks in a bar. If I told you that this kind of light bulb turned green if you break it would you believe me. If not you owe me a beer lol
Fluorescent Lightbulbs inert gas, like argon, along with mercury. Both gas are high state energy, (Plasmon or Ion) dischare lower gas state (Mercury change state quick glow Yellow, Argon glow green)
Hi guys. i'm a retired nuclear and electrical engineer and for a hobby I make neon signs and art. What you're seeing in the CFLs is the phosphor afterglow. CFLs use multiple "colors" of rare earth phosphors, especially the ones designed for photography. Each color has a slightly different afterglow period.
When your bullet breaks the glass, the glow discharge instantly extinguishes and what remains are the various afterglows. You can verify this by shooting a high speed video of simply turning the lamp off. It will glow white for a bit while the internal capacitor discharges but they you'll see the ever-changing color of the afterglows.
My guess with the CFLs... Whatever gases are inside must react pretty fast with some atmospheric gas (or maybe eve just the cheer kinetic energy from the bullet or the metal in the bullet? Idk) and exite its electrons to make them emit photons. Those are just bombarding the remaining gas and we get those colors from it. I am pretty sure I'm not 100% right and I'm breaking (or bending?) a few physics rules, but i also think it has to be something along those lines
ANSWERS:
So as for the yellow green color in the florescent twisties... They work with a gas (Argon and 4mg Hg) that produces UV light upon energization. That UV light then hits that white powder coating on the inside of the bulb and it absorbs the UV light becomes excited and its electrons jump an orbital higher and immediately go back to their original orbit losing a certain amount of energy in the form of a photon of less energetic but visible light that you see. The changing of color to yellow and then green is the florescent powder slowly losing energy once the current is broken, you can see, in a close up, the powder collecting as it sleuces down a twist and out of a broken area. You will see the same thing when simply turning the light off in a dark room without looking at the bulb as its brightness will reduce your ability to see the much dimmer wind-down and if you really dark adjust your eyes you'll be surprised just how long they stay illuminated. I'm actually kind of surprised that you guys didn't simply try turning the light off in slomo.
Tannerite does the same thing, instant reaction upon impact... the moment the bullet hits, the entire inside face was already reacting faster than the speed that the bullet travels...crazy physics there!
I think it's funny that the guys who just bought a quarter-million dollar camera are worried about hitting a ten dollar power strip. :)
You guys rock... love the hd content!
Let's see some rifle balistic tips doing work!!! 💥 🔫
5:12
That moment when you’re watching a bullet smashing light bulbs in super slow motion and then realize you might be witnessing something related to the famous Double Slit experiment... 😳
The color change has something to do with fluorescence, and that is something about molecules absorbing high energetic photons which cause electrons to radiate in two steps and produce light..., something like that.
And that stuff happens pretty fast.
Fluorescence is most likely the reason for the green color, and some UV, which your camera didn't see.
Please don't forget to also create TH-cam Shorts and Tik-Tok videos for people, who can't handle full-size videos o) I bet it will help a lot in your climb to video trends.
Oh god... A Serpa holster, and an olight? This truly is the most .45 AARP video 🤣🤣
Love it otherwise homies 😘
Great stuff. Slomoguys quality but gun-centric. More please
We appreciate that! We love the slow mo guys. Very kind of you! Definitely more content to come
I think I’ve already said, but I love the sfx you add in.
Slo mo for the most part doesn’t capture sound, and what you get wouldn’t sound very interesting
Pressure drop changes the density of the medium, resulting in a change in wavelength. That's why it goes from white to yellow to green.
I'm not a physicist.
The yellow is because the glass broke. That's where the electricity flows, the surface of the glass. Once that broke, the voltage changed, which changes the brightness.
It's the Phosphor losing excitement from the electrical charge, so it is going through the visible spectrum it operates in. Full excitement, makes the Phosphor glow white. Since the Mercury gas is not fully dispersed, nor is the Argon gas (which actually carries the electrical charge) the Phosphor still wants to emit light. CFL's will have a mix of Phosphates that will produce a host of colors. These ones in particular, use the white, yellow and green mix. Each color of Phosphate will emit it's color alone, at different levels of electrons and the amount of Argon and Mercury gasses they use as a conductor.
Breaking the glass, will stop the electrical flow, but not the electrons already in motion. As the electrons diminish, the various Phosphates will emit their singular colors in the waning gasses still available. Thus, you get white, yellow, and green, until the electrons can no longer excite the Phosphor.
When guns go boom
If the govt hadn’t interfered, we would all have a small nuclear reactor in our garages, providing electricity for our houses, with no monthly water bill.
For the CFL lights and why the my go from yellow to green. There are what’s called phosphors in the tubes. Which emit light when electricity is ran through them. Depending on the phosphor when the electricity is turned off, it will turn yellow to green.
the CFLs arent being chemically changed at all. its just the phosphore coating being de-energized with the electrical connection being stopped
100% bad ass….
It would have been cool to see the bulbs lighting up in slow motion. You would have had a 30-minute video and it would have fed the algorithm lol
The instant change in color is too fast to be a chemical reaction caused by introduction of atmospheric air. The reaction propagates through the entire bulb instantly but a chemical reaction could only propagate at the speed of sound, which is the speed the individual molecules are moving around. That means the change in color must be electromagnetic in nature. The effects of a change in the electromagnetic environment perceived by the bulb contents responsible for emitting light would propagate at the speed of light so it couldn’t be captured on camera. I don’t really know how fluorescent lights work but I think the bulb passes a charge through the gases inside from one end to the other. As the charge passes through the contents of the bulb electrons are excited and then relax. When they relax from a higher energy state to a lower energy state they emit a photon. We see the photons as visible light. When the bullet strikes the glass the circuit is broken. The electric current can no longer move through the substance inside the bulb that emits light in the presence of a charge. All the substance gradually and simultaneously stops emitting photons. The last compound that stops emitting photons is the compound that emits the wavelength that correlates with green on the visible light spectrum. For some reason the electrons in that compound take longer to relax to a lower energy state.
still want to see the 577 tyranosaur brass solids(round nose and flat) or 700 nitro express brass solids ripping thru a level 3-4 plate in slow-mo
Is it possible to make a video AK 47 VS AR 15, at the end do a mag dump, in full auto, i want to see what impact does to the torso. Grate video
Color change happens before the glass breaking. Shockwave maybe the reason. Sound travels faster in solid substances, especially in glass.
Love these videos guys! Favorite slow motion channel
We appreciate that! Thanks so much
Next time you need to remove a broken lightbulb use a cut potato. Cut it in half slip it down over the broken lightbulb twist off.
When y'all shot those energy saving light bulbs they turn purple before they turned yellow then they turn green. If y'all can film at a higher speed film of that a higher speed and shoot it again in the same way and if it has the same reaction you should be able to see that purple first I saw it look again
i like this channel, been here since the beginning 👍
Glad to have you here!
The fluorescence lamps have the gas. The incident lamps do not have any gas at all as their light comes from the positive and negative of the supply voltage. The color change is the changing of the gas inside the fluorescence lamp.
We need more videos from you guys
I think the reason why that last lightbulb sparked bigger than the other ones is because it could’ve been on the end of the circuit so all that electricity had nowhere else to go
This is SUCH an underrated channel!!!
We appreciate that!
true
You guys should try shooting thin metal plates
That would be very amazing in slowmotion