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Is it Possible to Erase Light With a Laser? The Photon Experiment
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- เผยแพร่เมื่อ 17 ก.พ. 2018
- Join the Club today - www.dollarshave...
In this video I show you how to "erase" light using a red laser and a glow-in-the-dark material. I talk about what happens when you try to charge the brightest glow-in-the-dark material (LIT) with different colors of light. I show you an experiment that actually proves that light is made of photons and not waves. This is a follow-up video to my video about mixing LIT and Black 2.0 (the blackest black).
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WARNING:
This video is for entertainment purposes only. If you use the information from this video for your own projects then you assume complete responsibility for the results.
Where I got my paint:culturehustle....
My Other Channel:
/ @actionlabshorts
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Can we just admire the super smooth transition to the product placement segment? Damn
Mick Shadows absolutely yes
I was coming down here to comment on that. He really drew me in.
... so now that we are done talking about science, let's take a moment to discuss my beard and life ...
So Smooth..... just like has skin after using a razor from dollar shave club.
Smooth, but too smooth. Just say: advertisement and mention the sponsor. don't sneak it in
LMAO THE ENDING
Funniest intro to an ad in a long time.
tubeist- dan top 10 anime advertisement ever
9:10 "and some buttwipes"
Am I just a photoshop mistake...
How many times did he say razor ?
Please don't quit TH-cam and become a teacher at a school. You don't deserve to just teach in one school, you need to keep teaching and inspiring billions on TH-cam! You have no idea how meaningful what you're doing is while having fun yourself. Keep it up 😊😊💖💖⚗⚗
Or he could.. do both?
You're hot
Joel Miller The amount of videos will definitely be compromised if he teaches in school.
Carlos Martinez Thank you very much 😊😊
Jacinda Lacroix also I'm pretty sure that teachers use his channel in their planning
You're a really inspiring guy.. I feel younger when I watch you. I'm a physicist and it's like you still have that wondrous curiosity I had when I was a kid, but kinda lost over the years of hard tedious studying. Thanks man! keep it up!
Swiftstalk ,
8:01 "let's talk about my beard"
*instantly knew dollar shave club sponsored the video*
Diệu Ngọc Ánh Lê Smarter than me, I thought it was going to be Harry's.
cuckoo head lol
I have been binge watching your videos with my wife for about a week now. I have seen most of them, she had only seen a few.
Thank you for the brain food/entertainment.
I believe you have a wife because you have this channel since 2007
I could have made this channel yesterday and my statement would still be true.
Draygoes
Yep, but not believable
Once when I was a young soldier, I failed my land navigation course because I was too stupid to figure out why I couldnt charge my compass tritium with my red light and couldnt see where I was supposed to head.
That doesn't make you particularly stupid. It would be very impressive if, during your frustrated midnight navigation session, you had just 'figured out' what was explained in this video. :D
Haha, you were not stupid, though, because this information is new to many people!
bruh L
Hey Action lab can you shine 7 lasers (ROYGBIV) on to one spot to make white light? id love to see that. Wud be really cool
And really _hot._
Yes even I want to watch
You only need three... red, green, and blue. There are projectors that work on this principle, using laser diodes (and sometimes LEDs as well) to generate the light for an image. You need a LOT more power in red and blue though, since the eye is much more sensitive to green.
tubeist- dan
Why hot?
jasexavier
Can red blue and green lasers make a white colour when they meet at an point?
This is my question
That commercial though!
i had to stop and rewind to check i heard you correct. yep you said butt wipes. I didn't expect this ending to the video haha
Louisa Hale I wonder if the butt wipes were any good?
The Doodles I mean, I saw they said they're peppermint scented.. They must be top of the range
lol
I don’t think i want peppermint anywhere near my bits tbh 😂
Ouch 😂
I'm sick of looking photoshopped due to my beard shadow too! I'm 35 and get ID'd all the time in stores when I try to buy C2H5-OH. They honestly don't believe I'm over 18.
Jim Griffiths I hope you feel "cool" because you used the scientific term for Etanol
So that's what it is! hehe. I brew my own now anyway. Far too expensive in shops. £15 for 1 litre of 40% Vodka versus £3.95 for 1 litre of 95.5% near-azeotropic "Vodka".
Robert Ri I bet he does since ethanol is so volatile it cools your skin so rapidly if you were to apply it
Robert Cary
Freezes my fingers in seconds when using homebrew to de-ice the car. Evaporation sucks.
I get the same hassle everytime I try to purchase C4 😀
The best channel on TH-cam! By far!
Says:- Lets see how it looks when we shine normal white light!
*Shines worlds brightest flashlight*🔦
He said normal WHITE light
whatever 🙄
It won't make any difference anyway. Coz the kinetic energy of photoelectric emmision doesn't depend on the intensity of the source.
The joke of this comment was pretty simple yall lol. Chill
@@xzero6850 😂 Finally someone after 3 years got it. (p.s I don’t even remember this 😂)
Titles like these makes my brain explode
Pro Player 1⃣ hell yeah , for me too 😁
Classic Sportaflop
Classic Robbie Rotten
You again
Summer Smith
Yes
wow that is way cool! Now l know how to light up the stars in your old room that you stuck up there years ago!
LOL oh the head being photo shopped onto your body! Simply hilarious!
Hey l think l will get dad one of those razors! Great job and just loved it!
Momma O That was an advertisement
Y'all are family?
I've noticed that Jimmy not only has photoshopped this head onto his body but additionally copied the eyes from his dad! This is a copyright infringement! -- unless he got a license to do so. ;)
Woah! Are you the action mom?
This is not exactly the photoelectric effect. Sure there might be some electrons being kicked off--the photo-electric effect, but the physics demonstrated here is the action of fluorescence and phosphorescence (the electrons stay confined to the atom or molecule). The electrons are pumped to a higher energy state when they absorb blue photons. Then they 'hang out' and eventually spontaneously emit, causing the material to glow in the dark. When you use the red light to erase the greenish light, you are showing stimulated emission and the reason it works for some compounds and not others is due to the energy match of the transition level to the stimulating light energy. That said, this is all the basic physics of a laser.
Rich M To be fair though, he didn't really say that this was due to the photoelectric effect. He only used the PE to show that light comes in discrete packages, and then continued to say that this also holds for bringing electrons to a higher energy state (in that you need packages of a minimum energy).
And I'm not sure whether this is the same stimulated emission as in a laser. In a laser, a photon with energy corresponding to the difference excited state - ground state interacts with an excited atom, but does not get absorbed but rather induces stimulated emission which results in the release of a second photon of the same energy (color).
Here the red laser photons do actually get absorbed by the phosphorus material, which causes an intersystem crossing back to the excited singulett state, which then can return to the ground state by emitting a photon of "greenish wavelength". So I the big difference I think is the coherence.
I thought I was being nitpicking but you beat me on being even more nitpicking for a complex system. But He stated it was the photoelectric effect early on and using that to state the rest of his premise is very misleading. Electrons are not emitted in the demonstration he is showing--photons are!...But how that leads to mean needing to join a shave club...now that is funny. I have burned hair mucho times in the lab from a laser blazing across my arm.
Rich M Haha I'm sorry, I just can't sleep XD
Yes, he could have made it more clear. At 2:32 he starts the anecdote about Einstein and the PE, and then at 3:21 he says "And that's what's we're seeing here: in order to knock electrons to a higher energy state..."
So yeah, he could have put it more clearly that we're not knocking electrons completely off the atom, but only bring it to a higher energy state.
But then again.....I just need sleep ;)
Well being nitpicky, Albert Einstein did not discover photoelectric effect Heinrich Rudolf Hertz did, Einstein justified it.
8:30 That transition though
Daaamn Ads are getting way too smart!!!
I love how you are always laughing and always happy when you make your videos!
Is the fact that the red light didn’t charge the pigment the same reason red lighting is used in “dark rooms” for developing film?
ShadowMarioid
yes
Short Answer: Yes
Long Answer: Red is the lowest energy EMR of Visual spectrum. Since it has so little energy, it fails to influence/alter/excite light sensitive matter such as photo negatives or glow in dark paint. That's why it is used in "Dark Rooms" etc.
Red light is also used in situations where you need to see what you're doing but also preserve your "night vision" such as viewing faint objects through a telescope. If you've ever seen a headlamp or flashlight with a red light setting, that's why.
Professor action lab very interesting videos
That was such a great ad, totally got me while I was on the toilet
As weird as it was, best end-of-video ad ever!
I just realized that I actually enjoy and learn a lot of things in your videos. I wish my school teachers were like you
I love you.
EnderTech599 Gaming lolwat
i think you meant to send that to your ex
What’s the best wavelength of light to use to charge peanut butter?
That’s an important question
strawberry jam
[I don't know what that is in microns]
On a second note , how bright would peanut butter glow when exposed to your super duper flashlight?
Asking the real questions over here
That ad was the best introduction to Dollar Shave club I've ever seen.
I have some questions: If the green, glow in the dark substance can’t get energized by a longer wavelength, then why does heat, or in other words infrared, charge it still? Isn’t infrared a longer wavelength than red visible light? Let alone green?
U post such coool things on the net which always makes my day
Shaheera Waseem hi
Whats the science behined dollar shave club
They are shaving you out of your dollars :-)
This has to be one of the best videos I have seen about raising the energy levels and how you can drain these raised energy levels. Great video, and great explanations.
Good job.
DAMN BRO THEM SALE SKILLS PFFF I HAVE NOT GROWN IN A BEARD (yet) but I am buying it 😂
Been here since 100k subs
same
WTK really?
Been here since the frozen oobleck video even though I subbed a few videos later
Me too
Can you do a video about weighing electricity please 🙏
e=mc^2
My dude... You are on another level... I love it!!! You deserve a Nobel Prize, sir!!! Keep up the great work!!!
8:08 Now that you speak of this, I cannot unsee what I'm seeing. The effect followed into your other videos too 🤣🤣
Can you try to put this glow-in-the-dark paint in a microwave?
Microwave are higher than UV light!
Microwaves have much lower energy than UV
It's true. I've confused to x-rays in my 'mind' wave scale...
It will awesome if you can test it with x-ray! But I know that is more difficult than simply put the paint in a microwave... :(
Many phosphorescent paints glow when hit by x-ray. In fact, this effect is used in x-ray image intensifier film cassettes. Film is weakly sensitive to x-rays, but if you lay the film against a plastic screen impregnated with phosphors it will glow and expose the film with visible light where it is more sensitive. As a result, you can expose the film with a much lower dosage of x-rays.
Noah Spurrier I was just wondering about that!!!😲😎 (About what would happen if higher energy ionizing radiation like xrays, gamma, hard-gamma, etc.. were exposed to certain phosphorescent materials) Awesome that xrays would cause these materials to glow, then what about the gamma+ range? Would these rays cause glow also, or would they pass right through the spaces between the atoms, hit & miss, some other outcome?
From where do you get this knowledge please tell me
Books, class, life, and the internet
Class ??? What is your qualification. I am asking out of curiosity.
What do you mean 😰😰😰😰
Johann what do you mean 😰😰
crazy Dk I think he meant to say he learnt it earlier in college and classes
I have Dollar Shave Club and I absolutely love their razors and products. The best shave I’ve ever had, and I’m not blowing $40 on Gillette razors.
This is the kind of videos i want you to do next times! Perfectly! Never expected that!
May be it didnt charged due to low intensity or frequency of red light than the threshold frequency??
tutorial master!!! It didn't charge because of the frequency. Red light is low in energy no matter the intensity. You can't put energy into something and get more out as it defies thermodynamics
He just finished explaining that the red lamp was 40 lumens and the blue was 3 lumens. The red was more intense yugely bigly. How could he have been clearer?
Red light doesn't make you lose your night vision, right?
Intensity is just the number of photons, whereas wavelength is the energy contained in each photon.
Since a photon of red light is too weak to knock an electron into a higher orbital, 100 of red photons won't either.
Think of it as multiplying by zero. 1x0=0
100x0=0
Doesn't matter how many photons of red light you have, it'll never be enough, because their energies do not work additively.
Umm he's a scientist
@ 5:30 my mind was blown and mouth wide open, till 8:00, but really this is absolutely amazing stuff I learned from u, never ever expected different light could cause real big difference.
Your titles always seem click baity.... but have yet to disappoint.
You always deliver.
I love your content!
21st century Albert Einstein 🧠😱
Your thumbnail is misleading, I expected you to magicly "erase" the light off a wall deriving from a normal CFL light bulb without the use of a pigment.
Theft Tv you're talking as if no one does this
Yes, but he must make his videos' names and titles enticing and it is difficult to make this video described completely truthfully in an enticing but also simple method!
I know the phe effect but never ever i thought of anything like this could be so amazing to watch.
You are the best scientist ever. I learn so much from your videos. I enjoy watching them so much, I subscribed. Keep up the good work!
Also, you don't deserve dislikes on your videos😁
Been here since 250k
since 25 k
like me senpai
that ending was hilarious! when you said you started to doubt your own existence I started dying laughing! Thanks for the great video!
That Dollar Shave Club transition was smooth oh my goodness!
Enough of LIT, Black 2.0 and brightest light on earth........
🤬🤬🤬🤬
Not until you guys stop asking questions that make me make more videos about it
The Action Lab Whatever man you are great ......People like you make youtube what it is made for...👏🏻
Ashish Gupta why did u use 🤬
BrianHPlayz use what?
Marius Haugen the emoji
Pretty uhhh cringy ad at the end lol
Oh my god his dollar shave club promo was the best thing I’ve ever seen
When you were about to test this with blue light, I expected the surface to glow, because shorter wavelengths have higher energy photons, and that should be able to charge better, that's why UV can be good at fluorescence.
I wanna a like n reply if u have some time hope so
Very polite. Of course
Mr.IDEA! Hiiiiiiiii! I don't know you........
The Action Lab probably thankx alot
*Evan Fisher* we can understand
*hi*
That transition into the Dollar Shave Club ad was pretty genius lmao
That transition from video to sponsor was smooth!
The best science TH-camr I’ve seen so far.
Where did you find such spectacular curiosity?
I think the experiments that you do are very cool and I love that you explain them. Keep up the good work!
I like how you integrated your sponsor.
Smoothest transition to a commercial ever.
7:58 That's a Great way of Starting an Advertisement for your sponsor !
This wa probably the best ad for whatever I've ever seen on TH-cam. Maybe behind Modern Rogue's screaming-in-terror-because-of-no-net-neutrality ad for some VPN.
Best plug ever!
Plus another really interesting video. Love your stuff.
That was a really amusing way to throw in an ad for a sponsor. Lol. Cool video. I never knew that about red light. I guess that explains why they had us use red flashlight filters in the military for reading maps and documents in black out exercises. Which leads me to wonder, how far away can you see light from a flashlight with a regular filament bulb with a red filter lens?
That was the best product placement segue I've ever seen.
Physics prof here, excellent video, I’m thinking of reworking our photoelectric effect lab now!
I HAVE A CHALLENGE FOR YOU: Take some A4 paper format and point the most Powerful Flashligt to this papers. How many papers can the light ultrapass??? I did this in my home and I note something weird: the color of the light change to violet. Btw, I use white paper so could you explain why this happen????
Great video as always. You do a great job explaining things.
I love the segue into the sponsorship spot. That was one of the better segues into a sponsorship spot I've seen in any video.
Admittedly whether your head is photoshopped onto your body never crossed my mind while I've been watching your amazing and highly informative videos about Stuart Semple's paints. Anyway, having been brought to your channel by paint and light and electrons and stuff, I'm going to watch the rest of your videos too :)
"Is my face really photoshopped unto my own body?" LMFAO
Can popcorn be made in vaccum chamber without heating? Would it be bigger in size than the regular popcorn?
I thought he was a click bait at first but now i look up to him :) good job man, love ur vids
I thought you were gonna talk Science for a while, then I realised it was an ad for Dollar Shave Club... XD
Wow, that's the best product advertising i've ever seen.
Well then with lit infrared can work very well because it has a very big wavelength great video 🙌🙌
thesw days you are doing very interesting and cool experiments, great work man!
I never made that photoshop comment since I didn't want to make you feel offended, and here you are using it to your advantage, marketing a shaving set :D You're awesome :D
i never realized that about your neck until you mentioned it lmao, but have you tried turning the flashlight into a UV light, with blue and red filters
I JUST CANT BELIEVE HOW CLEVER HE IS
Sweet bro !!! Love the demonstrations and explanations! Keep doing that and you'll get even more views!!!
How do you not have a million subs already this channel is so lit
8:00 this is literally the definition of expert advertising. I sincerely hope they paid you extra for that.
Wow man your experiments are crazy and also very informative !!🔥
"doubted my existence" ... This guy.. Funny..🤣
I think what is happening is the red light particles are absorbing the energy from the green light energy, the energy stored in the glow in the dark material.
So the red light is accelerating the discharge of the glow in the dark, because added to regular energy lose from emitting light, it also loses energy converting the red light into a higher energy light.
The red light is absorbing energy and converting into higher energy light.
But now this higher energy converted light, disperses to the sides of where the red light is hitting, so it is absorbed by the glow in the dark matter that is right next to where the red light is hitting. Creating the effect of a brighter (more energized) area, around the darkened (less energized, energy depleted) area, where the red light hits it.
It's not actually making the exact spot brighter before making it darker, it's making the sorounding area brighter. But since the red dot is very small you can't distinguish the two areas, they are visually mixed together. That's why after a moment when the brightness goes down a bit you can then see the two areas clearly.
Well, that's my theory.
A good way to test this is with a much larger red flash light/beam/spot.
Maybe the reason why laser is not working on LIT is because it stays in higher energy level for several hours. You mentioned that red light doesn't make the energy "disappear", only making it discharge quicker. So, maybe if you shine laser for several hours on LIT, it will "erase" too. LIT paint needs less light to charge (needs less energy to knock the electron in higher energy state) so the red light (laser) is also making it discharge slower. I wonder if shining laser on LIT for 6 hours or more would discharge it at all. Also, would shining laser on wrist watch's glow-in-the-dark hands make them lose charge quicker too? (I don't know if they are battery powered lights or the same principle as this stuff).
That was such a smooth transition into the ad. Now I want to buy a dollar shave club razor. ;^)
LOL the timing I have my exam on photoelectric effect tomorrow thanks buddy
Lol I didn't expect that plug at the end of your video I thought you were explaining another scientific thing that made me laugh so much nice transition
1:53 *falls off chair in suprise* "HOLY SHIT IT WORKED, gotta stay professional, stay in character"
this is the best channel i have ever subscribed cause you teach me soo much everyday!!!!
Dude you can make science fun
_thats legend-worthy_
I think that glow before dark is because energy which is there come out together, may be molecules share their energy to other molecules and they all together discharge energy that's why we see more intensity, still don't change the frequency distribution..... I think so........ But I don't know why they energy when lower energy light occur......... And explain the different behavior.?
Can you explain why any light that has longer wavelength than green can discharge the pigment quicker?
I am consistently amazed by your videos and by how easy you make it to show my kids (and myself) complex theories. You made me "the cool dad." Thank you so much for teaching us! Also, I never noticed the photoshop thing before. I've seen it. I can't un-see it.
I'm loving this light-related series :))
You definitely deserve more than a million subscribers.