How Lasers Work, with Neil deGrasse Tyson

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  • Опубліковано 3 січ 2025

КОМЕНТАРІ • 1,1 тис.

  • @StarTalk
    @StarTalk  5 років тому +429

    What have you used lasers for?

    • @CooKiesHouseCannabisCo
      @CooKiesHouseCannabisCo 5 років тому +84

      cut my lawn. (The city put a stop to that.....real quick)

    • @aidentheorc2124
      @aidentheorc2124 5 років тому +31

      Playing Minecraft wit da bois

    • @PremierCCGuyMMXVI
      @PremierCCGuyMMXVI 5 років тому +15

      StarTalk cutting a hole through the wall so I don’t have to open the door

    • @adamlopez3186
      @adamlopez3186 5 років тому +31

      To signal other friendly convos in Iraq

    • @CooKiesHouseCannabisCo
      @CooKiesHouseCannabisCo 5 років тому +11

      @@mccauleymccranie3752 I'm no astrophysicist but I know that light almost entirely lacks weight so i doubt it would be dragged along like some tokyo drift light beam if you shot it out sideways.... I'd entirely guess that some weird time physics would happen for an instant to correct the "way of things" and that light would continue on it's way as if nothing is going on. ..but again that's just a guess and i'm no physicist.

  • @patordie
    @patordie 5 років тому +237

    the zoom editing is everything in this video, A+

  • @AccessCode101
    @AccessCode101 5 років тому +758

    "so there was no laser, and then he mathematically said hey check out this laser"

    • @Zinacharme
      @Zinacharme 5 років тому +26

      Witch masks me exited about wormholes !!!

    • @stranger_danger1900
      @stranger_danger1900 5 років тому +23

      @@ME-ru4hv The Laser was hypothesized using mathematics and theory.
      And it works .
      Photons are a thing.

    • @stranger_danger1900
      @stranger_danger1900 5 років тому +9

      @@ME-ru4hv Science has determined photons are a thing. Your lack of understanding is your problem.
      "The photon is a type of elementary particle. It is the quantum of the electromagnetic field including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force (even when static via virtual particles). The invariant mass of the photon is zero; it always moves at the speed of light in a vacuum."

    • @BlackEpyon
      @BlackEpyon 5 років тому +18

      I love how theoretical physicists can just figure something out, not have any idea what it could be used for, file it away as a curiosity, and then decades later somebody uses it to make a revolutionary break through.

    • @stranger_danger1900
      @stranger_danger1900 5 років тому +7

      @@BlackEpyon That's because you can't think broadly enough to imagine theoretical physics. It was used to create the first nuclear weapons. Computers (the one you are using ) were a theory at one time as were many other inventions. It's a good thing everyone isn't as small minded as you.

  • @SASkinPro
    @SASkinPro 5 років тому +1366

    I think Einstein would have enjoyed lasers being used to entertain cats.

    • @romangerasimov5183
      @romangerasimov5183 5 років тому +59

      Leslie Asher You didn’t know, but Schrödinger asked Einstein to look after his cat for several days. Einstein needed to somehow entertain the cat and he had the idea - a laser!

    • @youwillnotknowme
      @youwillnotknowme 5 років тому +39

      @@romangerasimov5183 In the process of laser testing, Schrodinger's cat became just a regular dead cat.

    • @0079Matthew
      @0079Matthew 5 років тому +40

      @@youwillnotknowme *Slowly puts cat back in box*

    • @soberhippie
      @soberhippie 4 роки тому

      Thats on those occasions when he hing out with Schrödinger.

    • @drcrimson3736
      @drcrimson3736 4 роки тому +3

      @@0079Matthew and that's how Einstein solved the uncertainty principal , he knew the cat was dead .

  • @spectre2776
    @spectre2776 4 роки тому +49

    The moments when Chuck gets super excited about science warms my heart. Scientists and science enthusiasts are like kids in candy stores and we love it.

  • @wwjnz9263
    @wwjnz9263 5 років тому +640

    Wait a minute... My retina is 2 to 3 times more sensitive to green light, as opposed to red light? I will have to remember that, the next time I'm in traffic court.
    Thanks Neal.

  • @SinnerSoviet
    @SinnerSoviet 5 років тому +523

    YOUR EDITOR NEEDS A RAISE

    • @StarTalk
      @StarTalk  5 років тому +166

      :)

    • @broomemike1
      @broomemike1 5 років тому +81

      Clearly it's the editor who replies to UA-cam comments, haha!
      Not that I disagree... Awesome work!

    • @waqasahmed3115
      @waqasahmed3115 5 років тому +25

      Yeah it's very good editing. It makes it easier to understand for a layman like myself.

    • @Darkmountaindweller
      @Darkmountaindweller 4 роки тому +4

      The James bond bit made my day 🤣🤣

    • @MeanBeanComedy
      @MeanBeanComedy 4 роки тому +6

      @John Connolly He was saying the editor is doing such a wonderful job that they should give him more money as a reward. Usually the "x needs a raise!" comments are used to express how invaluable that person is to an operation.
      No worries! 😆😝😜

  • @Jay-Kaizo
    @Jay-Kaizo 5 років тому +292

    Einstein was an absolute BOSS. I wish we had just a few more decades of his brain.

    • @J040PL7
      @J040PL7 4 роки тому +18

      i bet he wasn't appreciated when he was young until people started to realize his brilliance.

    • @Jay-Kaizo
      @Jay-Kaizo 4 роки тому +1

      @Derrick campbell Yeah, I thought I also heard it was in the trunk of a car for a really long time too. lol

    • @Jay-Kaizo
      @Jay-Kaizo 4 роки тому +3

      @@J040PL7 I don't think he was. He was criticized and told he'd never be anything iirc. I think he flunked math as well. ;p

    • @bern9642
      @bern9642 4 роки тому +2

      @@J040PL7 I bet the people who knew him appreciated his brilliance

    • @bern9642
      @bern9642 4 роки тому +6

      @@Jay-Kaizo that's just 1 teacher. I bet most geniuses had that one person who tells them they are not as intelligent as they think.

  • @yougotta2505
    @yougotta2505 5 років тому +435

    never knew "laser" was an acronym 😱 my mind is blown

    • @Phil8sheo
      @Phil8sheo 5 років тому +54

      A few more you may not have known.
      TASER Thomas A Swift Electric Rifle
      RADAR RAdio Detection And Ranging
      SCUBA Self Contained Underwater Breathing Apparatus

    • @5777Whatup
      @5777Whatup 5 років тому +14

      David Stoler probably should of been LTASER Look Thomas a Swift Electric Rifle

    • @yougotta2505
      @yougotta2505 5 років тому

      @@5777Whatup that's clever and amazing 😄 thanks

    • @sohamdas8469
      @sohamdas8469 5 років тому +2

      GNU is not unix

    • @yougotta2505
      @yougotta2505 5 років тому +4

      @@Phil8sheo my mind is blown again 😱

  • @amankumar-xj9qj
    @amankumar-xj9qj 4 роки тому +61

    Why we can't have teachers like him in our school

    • @bvnseven
      @bvnseven 4 роки тому +25

      because no one wants to work for cheap, take their jobs home with them w/o pay and babysit children who weren't raised right and have no respect for teachers.

    • @Sergio-fu7mv
      @Sergio-fu7mv 4 роки тому +1

      Joe wut

    • @learningisfun2108
      @learningisfun2108 4 роки тому +4

      He is the Michael Jordan of explaining science. And he is just a rare.

    • @RameshSingh-no7qy
      @RameshSingh-no7qy 4 роки тому +2

      We can't afford the school fee then

    • @biekgiek
      @biekgiek 4 роки тому +1

      We do

  • @mrmakerGD
    @mrmakerGD 5 років тому +34

    4:15-4:19 Neil is so adorable! So pure, so cute😂❤️🔥

  • @johnl119
    @johnl119 4 роки тому +28

    I swear...I feel smarter every time I listen to Mr. Tyson. I learn so much. Plus, the banter these two have between them is is so funny

  • @gkd1011
    @gkd1011 4 роки тому +15

    4:14 Neil's little dance is lit af 🔥

  • @sagadatnurmagambet8041
    @sagadatnurmagambet8041 5 років тому +18

    The reaction we deserved. Chuck Nice is just me watching the video

  • @coffyboy
    @coffyboy 5 років тому +59

    Neil deGrasse Tyson, you are the bedst for our world.
    And I say that, in a small country like Denmark. Love you vidio's,. keep doing it!

  • @jjdbzfan18
    @jjdbzfan18 5 років тому +48

    3:45 when you and your friend finally figure out how to beat a level in a video game

    • @NaitoSentineru
      @NaitoSentineru 3 роки тому

      I laughed so hard, perhaps harder than I should have xD Thanks for the quick trip back to the 90s.

  • @Hogan698
    @Hogan698 5 років тому +155

    Oh great. Someone gave Chuck laser vision. There goes the neighborhood.

    • @Hogan698
      @Hogan698 5 років тому +2

      P.S. We're all trying to ignore you, Chuck.

    • @danielbray3494
      @danielbray3494 5 років тому +8

      At least it's a Nice laser

    • @denny9931
      @denny9931 5 років тому +3

      That thumbnail rocks

  • @troyertje1
    @troyertje1 4 роки тому +22

    0:54 "wow wait a minute are you for real?"
    *squeaky voice* "YEEEEEEEEES"

  • @Malik-ps4xs
    @Malik-ps4xs 5 років тому +209

    Bro wtf is einstein. This man done discovered everything

    • @nathanielb9016
      @nathanielb9016 5 років тому +20

      Malik in the future he may be the reason we create teleportation

    • @jordanholliday9163
      @jordanholliday9163 5 років тому +3

      @@nathanielb9016 i dont think we'll ever invent teleportation, to turn you whole body into pure energy then reorganize you back together without complications would take an enormous amount of power

    • @leptinainccm
      @leptinainccm 5 років тому +20

      @@jordanholliday9163 If you have the ability to even do teleportation, i doubt the problem will be power. More like the actual logistics of reorganizing people.

    • @youwillnotknowme
      @youwillnotknowme 5 років тому +6

      @@leptinainccm Yep. Putting it all back together. Not just the hardware, but mostly the software. Meaning the human's personality.

    • @youwillnotknowme
      @youwillnotknowme 5 років тому +4

      These are just applications of some "weird", "theoretical" and "i wonder how we will ever use that" stuff.
      That's all thanks to the fact:
      THE SCIENCE OF TODAY IS THE TECHNOLOGY OF TOMORROW.

  • @darpanpatel8023
    @darpanpatel8023 5 років тому +4

    Chuck realising and getting his mind blown by science is so relatable. I remember my earlier days when I learnt about Lasers and other stuff.

  • @soulife8383
    @soulife8383 5 років тому +32

    Wait, when he explained it initially he said the [random] atom's electron absorbs the photon causing it to excite (elevate) momentarily, then it calms back down (deescalate), which then causes the electron to re-release the photon. This is 1 photon that gets absorbed momentarily and then released. But then all of a sudden they're showing 2 photons are released for every 1 photon that's absorbed? How does this not break the conservation of energy? And where does the 2nd photon come from? If it's converted energy from the atom, wouldn't the atom degrade over time?

    • @dankdreamz
      @dankdreamz 5 років тому +3

      Also if electrons were to orbit the nucleus as Neil described that too would break the laws of conservation of energy. Bohr's model of the atom was replaced by Schrodinger's quantum mechanical model of the atom.

    • @soulife8383
      @soulife8383 5 років тому +1

      @@dankdreamz I was thinking about that too as I was watching the demo. But I just figured if you were blasting an atom with protons you were bound to hit electrons regardless.. it's just that I watched an explanation of how lasers work meant for children to understand, but I know less than ever now mixed with misinformation

    • @sooocheesy
      @sooocheesy 4 роки тому +29

      I work on high power lasers for a living and they missed some majorly important key facts... The whole process starts by adding in "pump" energy - an electrical pulse that brings the "gain medium" (ie the atoms) up to the excited state. A few of these naturally decay to a low energy state and in the process release photons in a random direction. The "resonator cavity" optics then reflect back photons that are heading in the "right direction", which creates that back and forth snowball effect where more and more photons are generated. Each photon generated by a photon knocking into a particle that was previously "pumped" by the initial electrical pulse will be emitted with the same wavelength, phase and direction as the photon that bumped it. If you remove the resonator optics all you get is a bright glow in random directions and no "laser".
      Btw pretty much every electronic device (CPU, RAM, processor, integrated circuit, etc) is made using lasers to project the pattern of the chip onto the silicon substrate. The process is called DUV lithography. Kind of shocked he left this out since electronics are easily the biggest change to humanity that has come from lasers...

    • @Phdintheory
      @Phdintheory 4 роки тому +2

      ​@@sooocheesy I hope you monitor this comment. I have a question. If you shine a laser at a curved mirror, could you bounce that laser back to another curved mirror that would cause the laser to bounce back and forth forever?

    • @jibjib1388
      @jibjib1388 4 роки тому +3

      Phdintheory there is a way for you to bounce a photon back and fourth; however, it’s not forever. Each time it’s reflected a little tiny bit of the photon gets absorbed by the mirror. You can actually test this. Have you ever seen 2 mirrors facing each other? That’s literally what you’re describing where the light keeps being reflected back and fourth. When 2 mirrors face each other I think people call it an “infinite mirror” and if u look at it, each time it reflects the image gets a bit darker meaning photons are being either lost or absorbed. (The mirror also gets a bit greener each time it’s reflected meaning mirrors are actually green)

  • @voxcrow
    @voxcrow 3 роки тому

    Thanks!

  • @uyscuti5503
    @uyscuti5503 5 років тому +31

    You guys rock!! I learn so much, every time!!! Thank you for your knowledge!!!

    • @StarTalk
      @StarTalk  5 років тому +6

      Thanks for watching!

  • @KyeEnzoden
    @KyeEnzoden 4 роки тому +1

    I love the rapport between these two.

  • @joost199207
    @joost199207 5 років тому +28

    Chuck makes these extra fun to watch, glad you two are doing these videos!

    • @asheragoddess8894
      @asheragoddess8894 5 років тому

      Danfga2 Chuck is the buffer who drops code lol ! Wake up

    • @DomYOUniqueTV
      @DomYOUniqueTV 4 роки тому

      I personally find chuck distracting.

  • @feynmanschwingere_mc2270
    @feynmanschwingere_mc2270 Рік тому +2

    Fun Fact, Einstein wrote the first paper on the LASER. Should've win a Nobel Prize for it. Super genius.

  • @shesheandtheblues6289
    @shesheandtheblues6289 4 роки тому +6

    This was one of their more goofy humor yet informative clips, love it! 🥰

  • @michaelackerman8455
    @michaelackerman8455 4 роки тому +1

    Thank you so much! An intelligent explanation WITHOUT BACKGROUND MUSIC! Brilliant!

  • @leahl5007
    @leahl5007 4 роки тому +11

    6:41 The real reason Luke was able to beat Vader in a lightsaber fight.

  • @MichelePardini
    @MichelePardini 4 роки тому +2

    Amazing. And the reference to Goldfinger was gold :D

  • @darkhound6461
    @darkhound6461 5 років тому +15

    Woah !! this man just taught a chapter in physics just under 20 min in the best way possible.

    • @benfrink376
      @benfrink376 5 років тому +2

      Sorry brother but its taught, not teached.

  • @michaelbibby01
    @michaelbibby01 5 років тому +2

    Chuck Nice is the #1 reason I listen to these any time I drive or have spare time. Came for Neil, stayed for Chuck. Love the show, please never end it.

  • @unnamedchannel1237
    @unnamedchannel1237 5 років тому +4

    I love how father and Son are on these videos, makes it so heart warming they do this channel together.

  • @bitebetsy
    @bitebetsy 4 роки тому +1

    I wish I could attach an image. My brother created the first Residential Laser Installation in an Abstract Art Collector's home in Dallas, TX USA - back in the mid-nineteen-eighties - using two types - Argon, & Radon Gas devices. It had to be certified both by the FAA & FDA. The setup included air-directed smoke devices, and was primarily used for entertainment - not so much for the art - which was highlight by specialized Halcyon & LED Lighting - whose technologies continue to advance yearly.

  • @Mi2Lethal
    @Mi2Lethal 4 роки тому +6

    5:28 that sneak diss from Neil lol

  • @c2gsovermind
    @c2gsovermind 4 роки тому +2

    learned about lasers in college physics class, so this was a nice refresher (though the math regarding lasers was a bit too tough for me...)
    The James Bond reference was a nice bonus! The laser was indeed Goldfinger, but the villain with the cat was Earst Blofeld (had to look that up). Two villain references for the price of one!

  • @LiquidCool
    @LiquidCool 5 років тому +33

    You forgot the most important application of the laser: cats!

  • @Jafste
    @Jafste 3 роки тому +1

    I don't know how to say this, but I keep listening to Dr. Neil DeGrasse Tyson, while I am programming.

  • @louisdz5325
    @louisdz5325 5 років тому +7

    6:09 i freaking jumped out of my seat xD

  • @bigfoenation
    @bigfoenation 2 роки тому +1

    I wish I had this show when I was a kid.

  • @tylerscudder9358
    @tylerscudder9358 5 років тому +8

    Amazing, I always wanted to learn more about lasers.

    • @StarTalk
      @StarTalk  5 років тому +7

      This video was made just for you

  • @aravindsamyashok4785
    @aravindsamyashok4785 3 роки тому +1

    I haven't known that science is this much fun! 😃every class should have a teacher like him and a student like my boi!

  • @djohle3430
    @djohle3430 5 років тому +11

    "that's kinda illegal... oh, but you... you know people" lol

  • @davidcayden
    @davidcayden 4 роки тому +1

    You guys are the best. I really cant get enough ....

  • @asheragoddess8894
    @asheragoddess8894 5 років тому +11

    So glad I am a laser getting activated with this gamma ray time loop !

  • @KismetBP
    @KismetBP 5 років тому +1

    Nearly 50 years on the planet 🌎 and just found out what lasers are all about in a few minutes. Gonna show this to my kids. Brilliant, love learning new stuff everyday. ❤️🤘

  • @musaid5647
    @musaid5647 5 років тому +7

    Thumb's up for Albert Einstien

  • @KsNewSpace
    @KsNewSpace 5 років тому +1

    One small but important detail not mentioned (sorry if I missed it) is in a LASER one of the two mirrors only reflects light to about the order of 99% so that some of it can actually escape. So the light you see coming out of it is only 1% (rough estimate) as bright as the light trapped inside the cavity. Also worth mentioning is that some super expensive LASERs can produce a single wavelength of light. LASERs and similar artificial light sources are the only that can do that. Natural light sources typically spawn a broad bandwidth of wavelengths. What this again means is, if we find a source of light in the sky that emitts only a very narrow band of light, it must be artificial! A LASER pointed at us bascially!

  • @Hussein_Nur
    @Hussein_Nur 5 років тому +7

    Could not watch the premiere live, had to wait for the upload. It was unavailable in my location unfortunately. :(

    • @StarTalk
      @StarTalk  5 років тому +1

      It’s available everywhere - we had an issue with the old video so it was reuploded.

  • @Skeggi
    @Skeggi 3 роки тому

    5:15 stellar Connery impression ⭐️⭐️⭐️⭐️⭐️

  • @malChhangte
    @malChhangte 5 років тому +3

    you always learn and laugh here, tysm👍

  • @dakota8147
    @dakota8147 4 роки тому

    The humor in this was great

  • @warehousevirtuals
    @warehousevirtuals 5 років тому +4

    I was watching cosmos' "light episode" and this was upload. What a coincidence

    • @dankdreamz
      @dankdreamz 5 років тому

      Look into the laws of large numbers and you will see it was more incidental than coincidentally.

  • @PulsarGazer
    @PulsarGazer 4 роки тому +1

    Fun fact. The laser reads the thickness of the white lines of the bar code. Not the black ones as light is 'fully' absorbed here so the light does not reflect back to the light sensor in the barcode scanner device.

  • @Noah-nt4tb
    @Noah-nt4tb 5 років тому +10

    Wait how does the bath of exciting photons stimulate the emission of additional photons?

    • @Iamwrongbut
      @Iamwrongbut 4 роки тому +1

      If Chuck didn’t interrupt Neil so much we’d probably know haha

    • @lioneleminence3401
      @lioneleminence3401 4 роки тому

      We still don't know.

  • @dennisdavis6943
    @dennisdavis6943 5 років тому +1

    The most important part of stimulated emission that you failed to mention is that the emitted photon is in phase with, and move in the same direction as, the photon that stimulated the emission. This is why the laser can get so powerful, all the photons are moving in lockstep together so they constructively interfere with each other.

    • @dankdreamz
      @dankdreamz 5 років тому

      Any idea why he stated that electrons orbit the nucleus when that theory was disproved by Schrodinger?

    • @dennisdavis6943
      @dennisdavis6943 5 років тому +1

      @@dankdreamz probably just because it's how the lay person would understand it, it's simpler than giving a full physics lesson

    • @feynmanschwingere_mc2270
      @feynmanschwingere_mc2270 Рік тому

      @@dankdreamz Einstein NOT Schrodinger proved that.
      Read T.S Kuhn and Douglas Stone's books on the topic for more rigorous detail or Abraham Pais "Subtle is the Lord."
      Heck, Einstein deserves about 40% of the credit for Schrodinger's wave function. Tbf, Maxwell, Poincare, Lorentz and Fitzgerald also deserve partial credit for Einsteins theory of Special Relativity.

    • @feynmanschwingere_mc2270
      @feynmanschwingere_mc2270 Рік тому

      Well said Dennis. You took the words out of my mouth.

  • @Yash-em2qm
    @Yash-em2qm 5 років тому +3

    I love Neil 🤘

  • @Cepheid_
    @Cepheid_ 5 років тому +2

    Love the editing in this episode!

  • @abelr5281
    @abelr5281 5 років тому +3

    I like these short clips of certain subjects make more startalk ⭐️

    • @StarTalk
      @StarTalk  5 років тому +2

      We've got more coming! Stay tuned.

  • @flatblack9279
    @flatblack9279 4 роки тому +1

    Neil straight up jumped when chuck screamed about the laser on his stomach. Had me dieing. Lol

  • @twstf8905
    @twstf8905 5 років тому +13

    Neil, "So....." deGrasse Tyson

  • @mrp-1
    @mrp-1 2 місяці тому

    I love Sir NDT's little dance movements when the host catches his words.

  • @TheHarrisonHd
    @TheHarrisonHd 5 років тому +4

    NEIL DEGRASSE TYSON IS ENTERTAINING ENOUGH ALL BY HIMSELF

  • @isa_n1037
    @isa_n1037 4 роки тому

    This program is so addictive.

  • @EmpyreanLightASMR
    @EmpyreanLightASMR 5 років тому +6

    4:58 He never answers this question :( I tried looking online but can't figure out who would have "a lot of lasers".

    • @theduder2617
      @theduder2617 4 роки тому +1

      He was just about to say "Bell Labs" (physicists) before Chuck mentioned James Bond.

  • @christopherrippel2463
    @christopherrippel2463 5 років тому +1

    You guys kill me!! Just the opening photo... I have not even watched this video yet! 😎👍

  • @soberhippie
    @soberhippie 4 роки тому +3

    And on the third day Einstein said "Let there be laser", and there was a laser. And he saw that it was cool. And then he rested. And while he rested, he did all sorts of mental experiments.

  • @TheJasonmassia
    @TheJasonmassia 4 роки тому +1

    AMAZING video! Educational AND entertaining! But am I mistaken or does Chuck's t-shirt say to end caffeine?!? Is that like secretly switching my regular coffee for decaf?

  • @emmettforrestel1071
    @emmettforrestel1071 5 років тому +4

    Neil is very epic

  • @bob_s_drawkcab
    @bob_s_drawkcab 4 роки тому +1

    I love how excited they get!

  • @OverlordZephyros
    @OverlordZephyros 5 років тому +12

    Good good but ..
    How do I get my death star??
    Asking for a friend 😏

    • @nicfoster4094
      @nicfoster4094 4 роки тому +1

      You must follow the force 😂

    • @shambosaha9727
      @shambosaha9727 4 роки тому +2

      Watch the Science Asylum video on it.

    • @dadano48
      @dadano48 4 роки тому

      Go to Amazon.com...!! lol

  • @maestrobassyo2
    @maestrobassyo2 3 роки тому +1

    I listen to you while going to bed, my neighbors complained about Chuck's screaming:D

  • @Seif97ify
    @Seif97ify 5 років тому +3

    Where does the photons that excites the electrons come from?

    • @stranger_danger1900
      @stranger_danger1900 5 років тому

      A flash tube or LED.

    • @dankdreamz
      @dankdreamz 5 років тому

      @@stranger_danger1900 any idea why Neil was describing the disproved Bohr model of the atom when he said electrons orbit the nucleus?

    • @feynmanschwingere_mc2270
      @feynmanschwingere_mc2270 Рік тому

      @@dankdreamz We still use that model today in schools as a layperson has an easier time understanding that than Probability waves and electron clouds.

    • @feynmanschwingere_mc2270
      @feynmanschwingere_mc2270 Рік тому

      An electrical pump

  • @MrDirtydisco
    @MrDirtydisco 4 роки тому +1

    I got Cateract surgery, and there was some leftover layers left after the initial operation, that was removed by slamming two lasers together at the exact spot where the layers were in my eye,. Took 2 minutes, and was done manually by a doctor with a good electron microscope and a couple lasers. amazing tbh

  • @ajiboladaniel9386
    @ajiboladaniel9386 5 років тому +4

    Light Amplification by the Stimulated Emission of Radiation = LASER.
    Thank you for this video.

  • @TheSwiftMagician
    @TheSwiftMagician 2 роки тому +2

    Good video guys! I have one of those little green lasers. I’m an amateur astronomer, and I love taking my big “expensive” telescope out to public star parties and other events. I find that people are more impressed by my inexpensive little green laser, than by my $4,000 computer-guided telescope. I can be showing the Rings of Saturn, but my most frequent comments are about that little green laser… and how much did it cost?.. and where can I get one?? I love how one kid said: “It looks like it’s touching the star!” 🤪😎😄

  • @pricey0986ify
    @pricey0986ify 4 роки тому +3

    Actually it was Dr Evil who made the "laser"

    • @racebiketuner
      @racebiketuner 4 роки тому

      I saw it in a "historical document," so it must be true!

  • @maanor401
    @maanor401 5 років тому +1

    This was a fun video you guys should do this more often

  • @themoribundapathetic4530
    @themoribundapathetic4530 5 років тому +3

    oof im not first

  • @duanehastrich1460
    @duanehastrich1460 4 роки тому

    I especially enjoyed this video. Star Talk is always worth the watching. Much gratitude.

  • @praisesun680
    @praisesun680 5 років тому +6

    First

    • @davidfuhr5455
      @davidfuhr5455 5 років тому

      Damn it you win

    • @joshuagranger2529
      @joshuagranger2529 5 років тому +1

      Faack you

    • @praisesun680
      @praisesun680 5 років тому

      @@davidfuhr5455 first time

    • @davidfuhr5455
      @davidfuhr5455 5 років тому

      I went for the like first, thats what cost me first comment which we all know is what REALLY matters.
      I tip my hat good sir

  • @advaypandey7852
    @advaypandey7852 4 роки тому +1

    Einstein: This paper proving lasers will have great application
    Me: Yep. We use it to drive cats crazy

  • @faustin289
    @faustin289 4 роки тому +1

    Talking about getting excited in the right environment; I wish my thing was listening. It keeps embarrassing me in the worst places possible. Like last time I had a very important presentation and I was nervous, then BAM, there it was up like a pole. At least it made the audience laugh which is a plus... I guess.

  • @JohnDoe-kj2cs
    @JohnDoe-kj2cs 4 роки тому +2

    Great duo! Especially Neil, my man, make the complex look simple 😀😀!

  • @caroldieball4293
    @caroldieball4293 5 років тому

    These two make the best pair! Neil is already captivating. But with Chuck added, they are on another level.

  • @kevindondrea144
    @kevindondrea144 3 роки тому

    Your reaction at 4:20 of the video Chuck was a perfect recreation of the Amplification by Stimulated Emission. :) You guys really make these videos fun to learn...
    No matter what Doctor Sheldon Cooper says. XD

  • @SirNarax
    @SirNarax 5 років тому +2

    More of this please.

  • @Ba_A
    @Ba_A 3 роки тому +1

    When he referenced the James Bond movie laser scene it reminded me of Dr. Evil from Austin Powers, using "air quotes" every time he said the word "laser" as if it was imaginary.

  • @murasaki848
    @murasaki848 3 роки тому +1

    If your electron remains excited for more than four hours, see your doctor...

  • @chandrahaslanka
    @chandrahaslanka 5 років тому

    No mention of CDs/DVDs? I know that we're not using them much now, but still information storage is a great application for lasers.

  • @AppNasty
    @AppNasty 4 роки тому

    What I find amazing is its 2020 and a COMEDIAN understands science. He gets it. Crazy how things change over time.

  • @guracha200
    @guracha200 4 роки тому

    Beginning to understand Tyson’s brilliance

  • @abdu1989
    @abdu1989 5 років тому

    @1:04 for such a smart guy, I didn't think you would get 8 wrong!
    Thats 10 you holding up Neil 👐

  • @joapps8135
    @joapps8135 5 років тому +1

    The co-host deserves a raise :)

    • @StarTalk
      @StarTalk  5 років тому +2

      Is Chuck writing this?

    • @joapps8135
      @joapps8135 5 років тому

      StarTalk Wow. Yes!! ...but a different Chuck 😎
      Thanks in advance for giving him a raise 👊😜

  • @Vanyx1000
    @Vanyx1000 5 років тому +2

    love these two

  • @whodatking26
    @whodatking26 4 роки тому

    Great editing in these

  • @helsiclife
    @helsiclife 5 років тому +1

    This was very informative and interesting! Thanks for sharing!

  • @BoshiYoshi
    @BoshiYoshi 5 років тому

    I could listen to these two all day. They're the best team.

  • @fredlang1840
    @fredlang1840 4 роки тому +1

    Well, perception of what light is stronger than the other could be relatively to the eye! Cause a myope will detect red light easier and hiperopes will see green light better! The story is bigger than that but that's the way it is! Love your explanations!

  • @marksilver1573
    @marksilver1573 2 роки тому

    Man, these two make learning fun!!