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Can You Bounce A Bubble Off a Laser?

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  • เผยแพร่เมื่อ 6 ก.ย. 2024
  • Get a whole year of CuriosityStream for just $14.99 by going to curiositystrea... and using the promo code stevemould at checkout.
    Check out Seb's video here: • Laser bubble bounce, w...
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    You can buy my "We're all outside an aeroplane now and it's not that cold" t-shirt from here: mathsgear.co.u...
    You can watch the origin of that joke here: • Stand-up comedy routin...
    This video was the result of me not wanting to trust my intuition about the above video from Igor. My first thought was that it was fake but I wanted to know for sure!
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ความคิดเห็น • 1.4K

  • @SteveMould
    @SteveMould  4 ปีที่แล้ว +271

    "We're all outside an aeroplane now and it's not that cold": mathsgear.co.uk/products/its-not-that-cold-t-shirt
    th-cam.com/video/C91gKuxutTU/w-d-xo.html
    The sponsor is CuriosityStream: Get a whole year for just $14.99 by going to curiositystream.com/stevemould and using the promo code stevemould at checkout.

    • @r0f3do
      @r0f3do 4 ปีที่แล้ว

      Pinned 7hrs ago...how curious.

    • @the_hanged_clown
      @the_hanged_clown 4 ปีที่แล้ว +2

      I don't get it

    • @maxmyzer9172
      @maxmyzer9172 4 ปีที่แล้ว +1

      get styropyro, he has a i think 200+ watt laser

    • @tfoot99
      @tfoot99 4 ปีที่แล้ว

      Am I crazy or are the speeding up while going through?

    • @the_hanged_clown
      @the_hanged_clown 4 ปีที่แล้ว +2

      @Sandcastle • I'm talking about the aeroplane quote numbnuts

  • @girlsinredtrenchcoat1169
    @girlsinredtrenchcoat1169 4 ปีที่แล้ว +2106

    Tom Scott: "Will this burn me?"
    Laser expert: "yes definitely"
    Tom Scott: *puts his hand in front of it*
    Good to hear Tom Scott has at least a little of the chaotic stupid instinct

    • @ronwesilen4536
      @ronwesilen4536 4 ปีที่แล้ว +139

      Didnt you see when he tried to erase his fingerprints?

    • @yeetusfetus8687
      @yeetusfetus8687 4 ปีที่แล้ว +9

      @Cryonic Family ?? What

    • @potatoonastick2239
      @potatoonastick2239 4 ปีที่แล้ว +61

      I mean, Tom also made a video with Micheal Reeves and William Osman. Kinds speaks to the chaotic energy level lmao

    • @ronwesilen4536
      @ronwesilen4536 4 ปีที่แล้ว +3

      @Cryonic Family im sure that information is somehow related to what i wrote, but i dont see the relation

    • @neelotpaldutta2347
      @neelotpaldutta2347 4 ปีที่แล้ว +2

      @@ronwesilen4536 They are spamming that in random message chains. Just ignore them.

  • @cheeseisgreat24
    @cheeseisgreat24 4 ปีที่แล้ว +2926

    My favorite is when someone says in a video "Don't try this at home!" but it's using multi-thousand dollar pieces of equipment. :-P

    • @Ministevo1
      @Ministevo1 4 ปีที่แล้ว +161

      They're trying to stop Styropyro

    • @jojojorisjhjosef
      @jojojorisjhjosef 4 ปีที่แล้ว +88

      They said that too before they turned on the large hadron collider, just in case.

    • @randomusernamed7307
      @randomusernamed7307 4 ปีที่แล้ว +12

      Like the hydraulic press channel

    • @andrewesther4705
      @andrewesther4705 4 ปีที่แล้ว +11

      I built a 5W 445nm laser for about $500 and some elbow grease. Doesn’t really take that much to make stupid high power lasers these days now that diodes are so cheap.

    • @cheeseisgreat24
      @cheeseisgreat24 4 ปีที่แล้ว +9

      @@andrewesther4705 Ah yes, because everyone has both the $500 to blow and the know how to tinker their way into powerful lasers. :-P

  • @slep1654
    @slep1654 4 ปีที่แล้ว +1070

    The bait with the bubbles bouncing off in the beginning can’t believe y’all lied to me.

    • @Rin-qj7zt
      @Rin-qj7zt 4 ปีที่แล้ว +39

      I am so disappoint

    • @94D33M
      @94D33M 3 ปีที่แล้ว +27

      Was waiting for it the whole video, but as further as the video got, only understood it wasnt going to happen

    • @imnot-
      @imnot- 3 ปีที่แล้ว +1

      Thank you

    • @zoot_the_axolotl8095
      @zoot_the_axolotl8095 2 ปีที่แล้ว +3

      Omfg tysm for this comment

  • @fly1ngsh33p7
    @fly1ngsh33p7 4 ปีที่แล้ว +508

    Some people: "This is my boyfried"
    Other: "This is my girlfriend"
    Steve: "This is my laser-friend"

    • @panzerofthelake506
      @panzerofthelake506 4 ปีที่แล้ว +14

      Gay lazer man

    • @JoeySchmidt74
      @JoeySchmidt74 3 ปีที่แล้ว +7

      @@panzerofthelake506 gay laser or gay man?

    • @panzerofthelake506
      @panzerofthelake506 3 ปีที่แล้ว +17

      @@JoeySchmidt74 yes

    • @designator7402
      @designator7402 3 ปีที่แล้ว +9

      I'm going to refer to any future partners as laser-friends.

    • @JoeySchmidt74
      @JoeySchmidt74 3 ปีที่แล้ว +3

      @@panzerofthelake506 Pretty sure he has a wife, so bi at the very most to be fair.

  • @subhasish-m
    @subhasish-m 4 ปีที่แล้ว +241

    Tricked us at the beginning with the footage...I was waiting for the sudden revelation. Great piece of experimental science to match your more theoretical stuff, I loved the video. Continues to be one of the still most underrated content creators on TH-cam.

    • @seanleith5312
      @seanleith5312 3 ปีที่แล้ว +1

      I notice some people pronounce "t" in "often". It is so weird to me.

    • @biggayhomofag
      @biggayhomofag 3 ปีที่แล้ว +1

      Underrated? He has almost a million subs, and his videos get even more views. That’s not what underrated means.

    • @ZuppaD.Cipolle
      @ZuppaD.Cipolle 3 ปีที่แล้ว

      @@biggayhomofag it can mean that, underrated just means "rated under it's actual value", something with an incredibly high value can be regarded as incredible and still be underrated, you can have 10 million subs and be considered underrated

    • @marklindsey1995
      @marklindsey1995 3 ปีที่แล้ว

      You need to see the companion video to understand the footage.

  • @xxportalxx.
    @xxportalxx. 4 ปีที่แล้ว +106

    My initial reaction was actually laser tweezers, a physics concept where you can suspend a small sphere of a particular snell ratio using a laser, the refraction causes it to impart momentum

    • @MCSteve_
      @MCSteve_ 4 ปีที่แล้ว +14

      Yeah sure, but that is at a very small scale. Though Light technically produces a force: light sails exist (for space) but it has to have very low mass and high surface area, even then the acceleration is still very low.

    • @xxportalxx.
      @xxportalxx. 4 ปีที่แล้ว +10

      @@MCSteve_ actually those two affects have different physical causes to my understanding

    • @MCSteve_
      @MCSteve_ 4 ปีที่แล้ว +6

      @@xxportalxx. Yeah you are correct, I should have made that more obvious.

    • @xxportalxx.
      @xxportalxx. 4 ปีที่แล้ว +4

      @@MCSteve_ eh it's all just pedantics after all

    • @ripdeyu
      @ripdeyu ปีที่แล้ว +6

      This is such a civil discussion for a youtube comment section

  • @Quokkat7
    @Quokkat7 4 ปีที่แล้ว +301

    Tom Scott: "Will this burn me?"
    Laser expert: "yes definitely"
    Tom Scott: puts his hand in front of it
    A true scientist

    • @bloodvue
      @bloodvue 4 ปีที่แล้ว +4

      Trust bet verify

    • @hemiacetal1331
      @hemiacetal1331 3 ปีที่แล้ว

      He's not a scientist.

    • @novameowww
      @novameowww 3 ปีที่แล้ว +6

      @@hemiacetal1331 He was testing a hypothesis, that absolutely makes him a scientist. I guess

  • @stuckurface
    @stuckurface 4 ปีที่แล้ว +221

    Definitely just a fishing wire tied to the pointer which is hidden by the beam.

    • @SpydersByte
      @SpydersByte 4 ปีที่แล้ว +14

      yup, that's what I figured as well... time to go check though!

    • @itsnotallrainbowsandunicor1505
      @itsnotallrainbowsandunicor1505 4 ปีที่แล้ว +5

      Yes you are right, th-cam.com/video/tjAZbo0jb8Q/w-d-xo.html

    • @Helperbot-2000
      @Helperbot-2000 4 ปีที่แล้ว +2

      @Cryonic Family go to another video and bother someone else, and stop liking your own comment

    • @WhiskyMystery
      @WhiskyMystery 4 ปีที่แล้ว +22

      String theory

    • @st0rmforce
      @st0rmforce 4 ปีที่แล้ว +10

      reel or fake?

  • @TusharGoyal1997
    @TusharGoyal1997 4 ปีที่แล้ว +242

    I love the chemistry between these two. We need more videos of them together!

    • @rstriker21
      @rstriker21 4 ปีที่แล้ว +6

      Are you talking about the lasers and bubbles lol

    • @GGGG_3333
      @GGGG_3333 4 ปีที่แล้ว +5

      I think it's more like physics 🤣

    • @jjhack3r
      @jjhack3r 4 ปีที่แล้ว +1

      Lol he hearted the comment so he must be gay...

    • @trickytreyperfected1482
      @trickytreyperfected1482 3 ปีที่แล้ว

      @@jjhack3r chemistry doesn't necessarily mean romantics. Two friends have great chemistry. Two actors can have great on-screen chemistry.

  • @marv8481
    @marv8481 4 ปีที่แล้ว +11

    “I got a 30watt laser...”
    Styropyro “psfffttt, hold my photons!”

  • @PowerhouseCell
    @PowerhouseCell 4 ปีที่แล้ว +280

    *Title: "Can you bounce a bubble off a laser?"*
    *Me: watches first 3 seconds*
    *"Yep, it can. No need to watch further"*

    • @HarNgue02
      @HarNgue02 4 ปีที่แล้ว +9

      Hey you watch Steve Mould too? Do all the cool science TH-camrs watch each other?!

    • @milolegends42
      @milolegends42 4 ปีที่แล้ว +18

      For those who actually believed the starting clip: it's fake

    • @RoelfvanderMerwe
      @RoelfvanderMerwe 4 ปีที่แล้ว +2

      You obviously didnt watch until the end

    • @AwesomeSauce7176
      @AwesomeSauce7176 4 ปีที่แล้ว +4

      Wow, you're so efficient you got the wrong answer. I want to see you insist this works and then attempt it at a party one day.

    • @theodorekim2148
      @theodorekim2148 4 ปีที่แล้ว +14

      Lmao at all these replies from ppl who can't take a joke 🤣

  • @Da5idc
    @Da5idc 4 ปีที่แล้ว +16

    I'm imagining a laser show through a cloud of bubbles - how absolutely awesome would that be!

  • @johnchessant3012
    @johnchessant3012 4 ปีที่แล้ว +372

    "We're all outside an aeroplane now and it's not that cold"

    • @SteveMould
      @SteveMould  4 ปีที่แล้ว +41

      th-cam.com/video/C91gKuxutTU/w-d-xo.html
      mathsgear.co.uk/products/its-not-that-cold-t-shirt

    • @anantakabir8390
      @anantakabir8390 4 ปีที่แล้ว +11

      you must be Canadian to be affected by this. Sorry John, you ain't true Canadian

    • @merseyviking
      @merseyviking 4 ปีที่แล้ว +7

      But it is still 3 times colder than inside.

    • @brapamaldi7666
      @brapamaldi7666 4 ปีที่แล้ว +1

      cheers mate, had no idea what his shirt said.

    • @black_platypus
      @black_platypus 4 ปีที่แล้ว +15

      For anyone new wondering: It's from a stand-up routine of his where he talks about "bad science", and in that case a book about "facts"; one of them was "The temperature outside of an airplane is six times colder than in a freezer"

  • @ProjectPhysX
    @ProjectPhysX 4 ปีที่แล้ว +45

    Do not try this at home. These cheap "5mW" (actually ~50mW) laser pointers from eBay can permanently blind you when they reflect off a bubble.

  • @bjarnivalur6330
    @bjarnivalur6330 4 ปีที่แล้ว +23

    I'm imagining a scenario where while you were focusing on the bubbles in the laser, the laser scorched a hole into the wall.

    • @robertfleischmann4119
      @robertfleischmann4119 4 ปีที่แล้ว +1

      Yup - Done that! My living room wall has a few burn holes on it.

    • @skepticmoderate5790
      @skepticmoderate5790 3 ปีที่แล้ว +1

      That's why they pointed it at the brick.

  • @SyntaxTerr0r
    @SyntaxTerr0r 3 ปีที่แล้ว +2

    Next vid: Steve and his laser friend on LSD testings soap bubbles.
    "Whoa, look at the colours!"
    😮

  • @RT710.
    @RT710. 4 ปีที่แล้ว +114

    I need a laser friend

  • @bilboswaggings
    @bilboswaggings 4 ปีที่แล้ว +8

    people at home remember to get yourself some laser protection glasses if you are going to try this 0:54

  • @AverytheCubanAmerican
    @AverytheCubanAmerican 4 ปีที่แล้ว +166

    The Sun is a deadly lazer
    *NoT aNyMoRe, ThErE's A bLaNkET*

    • @liltonyabc
      @liltonyabc 4 ปีที่แล้ว +2

      No it's not

    • @turtlecat0262
      @turtlecat0262 4 ปีที่แล้ว +11

      @liltonyabc It’s from the video “The History of the Entire World, I Guess” by Bill Wurst on TH-cam

    • @isithatennakoon4284
      @isithatennakoon4284 4 ปีที่แล้ว +8

      Now the animals can go on land

    • @user-jw1tc4eo5e
      @user-jw1tc4eo5e 4 ปีที่แล้ว +4

      and they died in a tornado

    • @oriontigley5089
      @oriontigley5089 4 ปีที่แล้ว +2

      @@liltonyabc *woosh*

  • @JackLe1127
    @JackLe1127 4 ปีที่แล้ว +26

    I like how they changed the subreddit name to blackmagicflippery.

  • @Asdayasman
    @Asdayasman 4 ปีที่แล้ว +11

    9:35 look at this still frame and tell me that isn't PEAK Dad energy.

  • @EdmundBasconMusic
    @EdmundBasconMusic 4 ปีที่แล้ว +9

    The way his laptop is set on the floor in the first bit brings me incredible amounts of anxiety.

  • @michaelrooney656
    @michaelrooney656 3 ปีที่แล้ว +4

    The high power laser internal reflections in the bubbles reminded me a lot of how double/triple rainbows work. Might be worth revisiting this from that direction because you can actually see the angles at which light is able to make its way back out of the bubble. That was pretty rad.

  • @torin1006
    @torin1006 4 ปีที่แล้ว +20

    In this video's title "Can You Bounce A Bubble Off a Laser?" why is the first A capital, but not the second?

    • @grakpan1233
      @grakpan1233 3 ปีที่แล้ว

      You will get the answer in Seb's revelation video!

  • @lighterpath5998
    @lighterpath5998 4 ปีที่แล้ว +6

    Looks like a creatively well-lit string, or string-like materials, are held taunt between two spots and then maneuvered to create an effect.

    • @nasonguy
      @nasonguy 4 ปีที่แล้ว

      That is my guess. Like a really low test fishing line tied to the laser and a spot on the wall then held taught.

  • @MartinThmpsn
    @MartinThmpsn 4 ปีที่แล้ว +4

    6:35 "Don't try this at home". Exactly my thoughts. I have persistent floaties in my vision from unprotected laser exposure in a lab at college years ago. That was a controlled environment where the laser path was protected and controlled, but my lab partner briefly fired laser while my protective glasses were off, and the black curtain that was intended to absorb the laser was down, and I caught some specula reflections off the wall. Watching these laser beams all around the room uncontrolled makes me panic a little bit.

    • @ThreeWhiteSoldiers
      @ThreeWhiteSoldiers ปีที่แล้ว

      have you tried any treatment for your floaties? i have one too, and rather noticable because it has dark color. i think it was also because i looked into laser keychain directly for long period when i was younger :(

  • @Krantz_
    @Krantz_ 4 ปีที่แล้ว +143

    So if you brought a bubble blowing kit as a spy you could easily detect all the hidden lasers
    Edit: Ack! I didn't actually watch the full video before commenting I thought it would work! Say goodbye to my spy days, I'd die in 20 seconds

    • @jeremydavis3631
      @jeremydavis3631 4 ปีที่แล้ว +14

      You'll still detect them. It'll just be the blinding reflected laser light that tips you off rather than the bouncing bubbles. ;)

    • @yeetusfetus8687
      @yeetusfetus8687 4 ปีที่แล้ว +2

      @Cryonic Family ?? Why are you commenting this repeatedly

    • @gavincarstens6497
      @gavincarstens6497 4 ปีที่แล้ว

      @@yeetusfetus8687 i had this same thought.. it confused me to heck

    • @mailliw94
      @mailliw94 4 ปีที่แล้ว

      technically still not wrong because they would make reflections and refractions

    • @CNSninja
      @CNSninja 3 ปีที่แล้ว +1

      You would've technically been right if you had said hairspray or baby powder!

  • @danielpetka446
    @danielpetka446 4 ปีที่แล้ว +1

    Laser dude: imma use dis worlds most powerful 30W laser
    *angry styropyro noises*

  • @goldendragon3147
    @goldendragon3147 4 ปีที่แล้ว +11

    You know, I thought about how solar sails on certain spacecraft work and thought it might be doing something like that and so I sort of disappointed myself when it didn't work haha! Great video though! 👍

    • @AdityaMahat
      @AdityaMahat 2 ปีที่แล้ว +2

      Dang, I was thinking of exactly the same thing.

  • @Ladyoftheroundtable
    @Ladyoftheroundtable 4 ปีที่แล้ว +2

    before the test, my theory is that the surface is being evaporated and that would be the force to lift it back up

  • @DrYmath
    @DrYmath 4 ปีที่แล้ว +5

    I wish I had a laser friend.

  • @mrjoe332
    @mrjoe332 4 ปีที่แล้ว +3

    Gotta say the most amazing thing was hearing the guy talking about the actual death ray he is planning to use to make a light show

  • @olfmombach260
    @olfmombach260 4 ปีที่แล้ว +11

    Damn, you really got me there in the beginning

  • @opsoc777
    @opsoc777 4 ปีที่แล้ว +2

    5:30 Seeing this, I'm going to need bubble machines for my rave

  • @spot1401
    @spot1401 4 ปีที่แล้ว +3

    Part of the contract is always: No air quotes around "laser" ;)

  • @mikea683
    @mikea683 4 ปีที่แล้ว +2

    My first thought was "why isn't he wearing protective goggles?"

  • @Cerzus
    @Cerzus 4 ปีที่แล้ว +7

    9:09 You know you have to explain those now, Steve :p

    • @benjaminq3226
      @benjaminq3226 4 ปีที่แล้ว

      they had a glitter ball just above where the bubble was.

    • @richbob9155
      @richbob9155 ปีที่แล้ว

      @@benjaminq3226 A glitter ball? What? Can you explain what you mean?

    • @richbob9155
      @richbob9155 ปีที่แล้ว

      It seems maybe the reflected light is bouncing off something but considering the reflective light is a total blur of colours I don't understand how that happened?

    • @gallium-gonzollium
      @gallium-gonzollium ปีที่แล้ว +1

      Those are caused by constructive and destructive interference.

  • @johnbarr7215
    @johnbarr7215 4 ปีที่แล้ว

    9:03 "yeah it's just doing nothing" as a light show is dancing on the floor and the walls!! haha

  • @jemand771
    @jemand771 4 ปีที่แล้ว +6

    i sometimes work with lasers professionally at my second job and the highest i've ever encountered was 10w and it's crazy seeing ones even above that. but to be honest, when i first saw the video at the beginning i really thought it could be real

    • @sac3528
      @sac3528 4 ปีที่แล้ว

      You can now buy a single chip with 100w *output* for 300 bucks.

    • @Neokretai
      @Neokretai 4 ปีที่แล้ว

      rating lasers in Watts is always a bit misleading. I work with pulse laser systems that are technically 1 W, but because they are nanosecond pulses it corresponds to 100 Megawatts during the actual irradiation. And that's still pretty low by laser standards, the really cutting edge high powered lasers are now operating on the Petawatt scale.

    • @jemand771
      @jemand771 4 ปีที่แล้ว

      @@Neokretai i was talking about "consumer grade" lasershows and stuff, not industrial lasers. those are usually not pulsed but turned on continuously ^^

  • @x--.
    @x--. 4 ปีที่แล้ว

    Anyone else dig the gimmick of Steve in the goggles, 9:34? Like, this could be the beginning of *Steampunk Steve* and his Science Emporium of Curiosities, Scholarship and Other Odd Observations?

  • @angst_
    @angst_ 4 ปีที่แล้ว +11

    And here I am with a 150w CO2 laser I bought from china just chillin' in the other room like it's nbd. It's a 7ft water cooled glass tube.

  • @batman3698
    @batman3698 2 ปีที่แล้ว

    Gotta love the guy in the video just standing there without any eye protection as that laser scatters into a clusterf of small laserbeams in his face

  • @pulesjet
    @pulesjet 4 ปีที่แล้ว +8

    You had some rather serious secondary emissions going on there.

    • @dennisdavis6943
      @dennisdavis6943 4 ปีที่แล้ว +1

      When I saw the rainbow colors reflected onto the floor I was confused, "lasers are monochromatic, wtf is going in here!?". I think the laser they were using has multiple laser sources inside and combines them into a single beam. So probably not secondary emissions, rather, 3 primary emissions.

    • @pulesjet
      @pulesjet 4 ปีที่แล้ว

      @@dennisdavis6943 The bubble is Refracting the Light. Shifting the Wave Length.

    • @pulesjet
      @pulesjet 4 ปีที่แล้ว

      I was thinking they proved light has mass.

    • @dennisdavis6943
      @dennisdavis6943 4 ปีที่แล้ว

      @@pulesjet yeah, I should have said "refracted onto the floor". But still, lasers are (mostly) monochromatic, so refraction won't create a rainbow like full spectrum white light would
      Refraction does not shift the wavelength

    • @pulesjet
      @pulesjet 4 ปีที่แล้ว

      @@dennisdavis6943 Sure it can. The refraction bending the wave would generate shifted light
      The multi colors are because of the varying thickness of the bubble cell. I don't think it would be vary prominent using Red light. The shift being none linear ..

  • @lucadagostini2542
    @lucadagostini2542 3 ปีที่แล้ว

    Scientific me: "That can't be. Bubbles are transparents, of course light would pass through them."
    6yo me: "Shut up, boring old man! It's bubbles and laser beams! They're awesome!"

  • @bluerizlagirl
    @bluerizlagirl 4 ปีที่แล้ว +2

    It's Mulder ("I Want To Believe") versus Scully in Steve's brain!

  • @yassine321
    @yassine321 4 ปีที่แล้ว

    06:29 My hand : touch the light touch the light
    My brain : No no no

  • @maxheadroom8277
    @maxheadroom8277 2 ปีที่แล้ว

    9:09 The moment when you want to test a mystery and create another one :D

  • @TechnoSticks
    @TechnoSticks 4 ปีที่แล้ว +8

    9:08 they almost broke the Matrix

  • @MrFastFox666
    @MrFastFox666 4 ปีที่แล้ว

    Here's one thing I discovered. If I shine a very bright flashlight (in my case, a Rovyvon Aurora A3) onto a piece of aluminum foil, I would hear a faint humming sound. I tried wrapping the aluminum foil around a piece of metal, then putting it over a flame to deposit a very thin layer of soot, essentially making poor man's VantaBlack. This made the humming significantly louder. The humming would only appear with the flashlight in the low or medium brightness settings, since at full brightness the LED is lit 100% of the time, but a lower brightness levels the led is illuminated using pulse width modulation

  • @adilnadaf9182
    @adilnadaf9182 4 ปีที่แล้ว +3

    If I may, You should Colab with styropyro for anything related to laser or electricity in general.

  • @zefellowbud5970
    @zefellowbud5970 4 ปีที่แล้ว

    Lights beams and bubbles...
    Sounds like the perfect way to defeat some ancient aztec body builder

  • @neutronenstern.
    @neutronenstern. 4 ปีที่แล้ว +8

    my intuition was that it could work for some reasons, if the laser was strong enough:
    1. The photons of the beam could transfer an impact on the bubble if absorbed or reflected
    2. The light could heat the bubble up which would cause it to go up again because of bojency
    3. The laser could heat the bubbles downside up, causing it to vaporize and this vaporized water might be able to push the bubble up, also.
    Now to calculate how strong the laser had to be to move the bubble with its impact:
    P=m*V=5*10^-6Kg*0.01m/s=5*10^-8Ns
    The impact should be transferred in 0.01seconds
    P=h/l=6.626*10^-34Js/500*10^-9m=1.3*10^-27Ns
    If one percent of the light hitting the bubble is reflected or absorbed, transferring its full impact to the bubble, then the impact of the 0.01 seconds long photostorm should have an impact of 5*10^-6Ns
    5*10^-6Ns/1.3*10^-27Ns=3.8*10^21 (Photons)
    These Photons would have an Energy of
    E=N*h*c/l=3.8*10^21*6.626*10^-34Js*3*10^8m/s/500*10^-9m=1511J
    So the laser would have to have a power of P=E/t=1511J/0.01s=151100W
    This is the power, the laser would need to push a 5*10^-6 Kg bubble with a speed of 1cm/s

    • @CaelanStewartThePhpGuy
      @CaelanStewartThePhpGuy 4 ปีที่แล้ว +1

      It seems at that energy the water would vaporise explosively and cause a small pressure wave which breaks the surface tension and pops the bubble.
      If you had a near 100% reflective surface, or reflective enough that at the duration of the pulse and the given energy level it won't vaporise the material, it would work.
      It works for the same reason why solar sails work, doesn't it.

    • @neutronenstern.
      @neutronenstern. 4 ปีที่แล้ว +1

      @@CaelanStewartThePhpGuy yes what i didnt calculate with is, that the impact change of the bubble is double as high, if the light gets reflected, as it is, when the light gets absorbed. That is, because of in the case of a reflection the photon has got -P after the reflection , what ends in a delta P of 2P (P-(-)P=2P)

    • @Hallowed_Ground
      @Hallowed_Ground 4 ปีที่แล้ว

      Except that none of this works or matters because the bubble is transparent.
      Now, if you put some dye in the water you were using, it might very well work indeed.

    • @neutronenstern.
      @neutronenstern. 4 ปีที่แล้ว

      @@Hallowed_Ground not fully transparent. In the vid you could see, that it was also reflected in some way.Also you can see that a bubble is shimming red yellow ... . So because of intefferation (some light is reflected at the inside of the bubblelayer and some of it at the outside of the bubble layer and if the thickness is some (k+0.5)*k*Lamda it is destructive inteferrence. ) So this causes the photon to be absorbed. So there is indeed some kind of reflection and absorbption.

    • @CaelanStewartThePhpGuy
      @CaelanStewartThePhpGuy 4 ปีที่แล้ว +1

      ​@@Hallowed_Ground It is not 100% transparent. That means that there is always some quantity reflected, and some absorbed. It's why you can see the bubble at all.

  • @kaitlyn__L
    @kaitlyn__L 4 ปีที่แล้ว

    Steve describing learning like it's the hardest drug with the longest-tailed dragon to chase....
    (I kinda love it tbh)

  • @MarcosProjects
    @MarcosProjects 4 ปีที่แล้ว +7

    Haha, I love that the answer to the WTF diffraction pattern thing was just a disco ball! th-cam.com/video/tjAZbo0jb8Q/w-d-xo.html

    • @jskullheisenberg5227
      @jskullheisenberg5227 4 ปีที่แล้ว

      It was?

    • @MarcosProjects
      @MarcosProjects 4 ปีที่แล้ว

      @@jskullheisenberg5227 Yeah, they reveal it in Seb's video th-cam.com/video/tjAZbo0jb8Q/w-d-xo.html

  • @longlowdog
    @longlowdog 4 ปีที่แล้ว

    So what I've taken from this is that if the military develops laser weapons then I need a bubble generator for protection.

  • @deprivedoftrance
    @deprivedoftrance 4 ปีที่แล้ว +3

    PLEASE do a video about the clicking sound that lasers make, I would love to see a video from you about the photoacoustic effect!
    It's super fascinating and I know you would do it justice.
    "The photoacoustic effect or optoacoustic effect is the formation of sound waves following light absorption in a material sample. In order to obtain this effect the light intensity must vary, either periodically (modulated light) or as a single flash (pulsed light)."

  • @dyscea
    @dyscea 4 ปีที่แล้ว +1

    I’m a little foolish for mentioning this (because you guys were so definitive). Being MythBuster-minded, I really wanted it to work.
    There is a soap bubble artist/performer that uses different recipes depending on the performance or even the humidity of the environment. This wasn’t explored at all in this video.
    But u guys were so definitive 😆
    Well, hey. If someone could just mention below how a soap bubble’s makeup wouldn’t matter neither, I guess I’d be satisfied 🙂

    • @mokopa
      @mokopa 3 ปีที่แล้ว +1

      The fact that a soap bubble is transparent to the frequencies of the laser light means that the light and the bubble do not really interact. If there is very little interaction, there is very little opportunity for the energy of the laser to be transferred to the bubble. As long as the bubble is transparent (no matter what the ingredients are) the laser cannot 'push' on it hard enough.

    • @dyscea
      @dyscea 3 ปีที่แล้ว

      @@mokopa Thank you for finding my comment 😄. Rewatching and feeling foolish all over again. Solid answer!

  • @HelloKittyFanMan.
    @HelloKittyFanMan. 4 ปีที่แล้ว +3

    "Don't try this at home!"
    -- Nope, just try it at Steve's house.

  • @aawagga7099
    @aawagga7099 4 ปีที่แล้ว +1

    steve nould: this 30 megawatt laser is super dangerous and weighs a town! Styropyro: I'm gonna shoot this handheld laser at random things, I hope I don't drop it and shoot myself lol, its only 100 megawatts I'm fine.
    Styro pointing his laser at a boeing 747: WOW IT CUTS THROUGH IT LIKE BUTTER

  • @murk1e
    @murk1e 4 ปีที่แล้ว +9

    Just as a piece of logic in the intro: “If it pops it was never going to bounce”. Not necessarily true. There is an effect with molten metal where you can briefly dip finger (obvious hazards here.... if you try and it goes wrong... it’s on you). Modest temps don’t give a protective vapour layer and burn, higher temps can work. Not all effects are linear.
    However, in this case, my intuition matched yours, I’m just being pedantic.

    • @Okusar
      @Okusar 4 ปีที่แล้ว

      The Leidenfrost effect, where a high thermal differential creates an insulating vapor barrier between hot and cold surfaces. You can also see the effect in action by placing drops of water onto the surface of a very hot griddle and watching them skitter about on a cushion of vapor. It's definitely a much safer demonstration, though not as badass as dipping your hand in molten metal.

  •  4 ปีที่แล้ว

    Lol 11:29 Steve got his legs checked. That was hilarious 😂

  • @VikasSBhat
    @VikasSBhat 4 ปีที่แล้ว +4

    The WTF pattern can’t be diffraction right? Because different colours show up at the same spot.

    • @xogdo5260
      @xogdo5260 4 ปีที่แล้ว

      They explain it in Sebs video, it's not diffraction

  • @RichardKCollins
    @RichardKCollins 3 ปีที่แล้ว

    How much does the bubble weigh? What is its pressure on the beam? How large is the beam and what is the power density?
    The energy density for the beam is (powerdensity Watts/m2)/(velocity m/s)
    The pressure on the beam is mg/A where A is the area of contact.
    Yes the beam power varies with distance from the center of the beam. Yes, if the beam has frequencies that match absorption in the components of air it will heat the air. But if the bubble is too heavy, it won't bounce. The laser will heat the bubble if the spectrum of the laser includes absorption in the bubble materials.
    If you use a steady stream of air to form the bubbles - blow through a tube or inject fixed volume of air - it is easier to quantify the size of the bubble. If the air to blow the bubble is much warmer than the air around you get to play with balloon buoyancy.
    Put all that in a spreadsheet and keep adjusting for likely places where the conditions match, and you have a better chance to reproduce that earlier video. You can model most all the variables and gather them together. No matter how many pieces you can think of. Put them into quantitative form. Measure as many things as you can - the videos are quantifiable. They give you things like size, estimated mass, surface tension (the "give" when you move the bubble), velocity and acceleration. If you try to do this all in your head the time it will take you is a long time. Unless you have already spent years playing with bubbles.
    en.wikipedia.org/wiki/Photon and jump down to 'spin angular momentum'. Just above that it say momentum (p) is PlancksConstant (h) divided by the wavelength. That is kg*meter/second
    Go to en.wikipedia.org/wiki/Radiation_pressure#Radiation_pressure_from_momentum_of_an_electromagnetic_wave and see that the radiation pressure is just the "irradiance" (Watts/meter2) or power density (Watts/meter2). I just say (Watts/Meter^2) and don't care what the name is.
    So that cos^2(angle) just below is for grazing incidence. Then it is vectors for working out the forces. These are macroscopic things you can measure.
    When I face a new and complicated problem (magnetic levitation, magnet motors, formation of clouds, gravitational sensors, whatever) I focus on the units that people are using, I memorize the names and write them down. I keep track of all the links because sure as shoot'in you will have to go back again or want to tell someone.
    Without measuring anything, this bouncing bubble thing could take a long time to get right.
    I wonder if you can see the laser bend the surface of the bubble?
    The use of lasers to move things around has engaged many tens of thousands of people. It is important in many fields and growing in sophistication and value. Take a look at "Optical tweezers" on google. There are 984,000 entry points for that exact phrase (if google is not fudging their numbers).
    en.wikipedia.org/wiki/Optical_tweezers is much harder than it needs to be. Those equations are all images so you can't even copy them into a decent symbolic math program to use them. Not a single calculator on the page. But search for "typical photon radiation pressure" and then read "counters the downward force of gravity". So if you start measuring the waist size of the beam, or learning how to measure the beam power profile or the detailed spectrum (any light will do, any mixture of light will do, just do the numbers)
    On the Internet as a whole every tiny piece of science, technology, math and all knowledge is massively duplicated, repeated without links and supporting information and tools. I have been studying the growth and diffusion of topics and methods on the Internet every day for the last 23 years. I like what the Internet could become, but right not all I can say is that it is a sad mess. Here as I read there are 361,990 views of this 13 minute video. If everyone only watch half, that is 39,215.6 hours of human time spent. The value of human time that I use for estimating on the Internet is $32 per hour. So the time spent on this video is roughly $1.25 Million worth of human time. And if all the people who watch were serious about wanting to know, then perhaps it should be worth that much to find a decent answer. Some of the people on TH-cam who ask for support invest in learning and measuring. Some very popular ones just stay at entertainment and wonder.
    Richard Collins, Director, The Internet Foundation

  • @Arcy190
    @Arcy190 4 ปีที่แล้ว +5

    I'll be honest, the conclusion of this video made me mad at you, Steve Mould. I came in here, honestly curious at the question in the video title, but even at the end of it, I'm no closer to an answer. If this was supposed to be a riff on how 'bad science' is done, I failed to clue into it until reading the other comments. if it wasn't, then this is a cheep (in the worst meaning of the word) way to share views between your video and Seb's.
    Down voted for, if nothing else, a clickbait title.

  • @RavenDwyre
    @RavenDwyre ปีที่แล้ว

    TItle: Can You Bounce A Bubble Off a Laser? First 3 seconds of the video: YES

  • @oscarbraque
    @oscarbraque 4 ปีที่แล้ว +1

    Everybody needs a laser friend.

  • @pencrows
    @pencrows 4 ปีที่แล้ว

    The dude who made the original video of the bubble bouncing off the laser beam really should have been wearing eye protection and the laser beam actually swiped across his face momentarily just showing how close he gotten from becoming permanently blinded.

  • @dhruel
    @dhruel 3 ปีที่แล้ว

    9:09 You invented the laser-bubble disco ball!

  • @labboc
    @labboc 4 ปีที่แล้ว

    On a much smaller scale, this is a real thing. Laser levitation (optical tweezers) won the 2018 Nobel physics prize.

  • @1x1johnny
    @1x1johnny 4 ปีที่แล้ว +1

    Steve, if this weird pattern (looked like almost like a diffraction grating pattern) at around 9:10 was really from the bubble, then you should definitly look closer into it. You might end up with your second effect named after you. Two things which are weird about the pattern -it was not moving/not connected to any movement of the bubble -the three colores where in the same place, which is not how gratings work. But as I think your brain works, you would have thought already about it. Or it was fake otherwise, if not I order myself a 30 Watt Laser :).
    Cheers
    Johnny

    • @seblee
      @seblee 4 ปีที่แล้ว +2

      haha it's funny when I first discovered it in the footage I had already decided it would be the Lee-Delisle effect 😊 We figure out what causes it my counterpart video.

  • @Cimlite
    @Cimlite 4 ปีที่แล้ว

    When the guy with 20 different powerful lasers says _"that's scary",_ I would be out the door and down the street.

  • @yeetyeet7070
    @yeetyeet7070 3 ปีที่แล้ว +1

    The "WTF" video pause was probably the smaller bubble at the bottom getting hit aswell and double-scattering it

  • @spiderdude2099
    @spiderdude2099 3 ปีที่แล้ว

    “Find out how it was done over on this other channel!”
    Me: “guess it’ll be a mystery forever….”

  • @WileHeCoyote
    @WileHeCoyote 3 ปีที่แล้ว

    "It was fake.... but maybe it wasn't... but it was fake tho.....BUT! maybe it wasn't" 🤣😂

  • @spacepirateivynova
    @spacepirateivynova 3 ปีที่แล้ว

    you CAN suspend particles of diamond within a laser beam when it's properly focused.

  • @NewCuber4u
    @NewCuber4u 3 ปีที่แล้ว

    At 5:53 it looks like a couple of bubbles experience a course change.

  • @kauske
    @kauske 4 ปีที่แล้ว +1

    My first guess was 'maybe if the laser has just the right level of power, it could be ablating the bubble and causing just a tiny bit of thrust', in the same vane that you can use lasers to shove space debris around. Kind of disappointing that even with a stupid-powerful laser, nothing happened still. I can't help but remain curious if there _is_ a sweet spot where a bubble can be gently ablated and pushed around with a laser, but not instantly burst.

  • @yuxin7440
    @yuxin7440 4 ปีที่แล้ว

    My speculation regarding the bouncing effect toward the end is that there is a very thin colorless wire (like fishing line) connected to the laser to the wall, and it's actually the line that bounce the bubble. This is because the position that they are pointing the laser at seem to be a fixed position on the wall, which is where the wire is mounted. There are some weird glaring effect when they move it around even without hitting the bubble (around 10:33), which is the effect of laser diffracting though the transparent wire (while dust can have similar effect, it just seems a bit unnatural).
    By the way, I haven't watch the other video yet, and this is only my speculation.

  • @HunterJE
    @HunterJE ปีที่แล้ว +1

    It's so funny to me how strong my instinct to look away from things that would IRL be vision hazards even though I know the brightest it can get is no brighter than the white pixels around the video (get this any time I watch a video with a welding arc visible, too)

  • @gregoryballestero4369
    @gregoryballestero4369 3 ปีที่แล้ว

    "I've been playing with bubbles since I was a kid" as a clown wearing a bubbles name tag sits next to them

  • @willowmoon7
    @willowmoon7 10 หลายเดือนก่อน +1

    Lasers mentioned _Styropyro has joined the chat_

  • @killianmaurin1979
    @killianmaurin1979 4 ปีที่แล้ว +2

    I am not sure at all, this is why I'm asking here, but at 9:10, can this "wtf" points be caused by the multiple refraction of the laser. It is so powerful at first, I believe the light could still be strong enough to be seen after a few times "bouncing" inside the bubble, creating each time a dot on the wall with the light that passes through and that which doesn't continues to bounce until it creates this pattern

    • @XxteardamagexX
      @XxteardamagexX 4 ปีที่แล้ว +1

      yeah it looks like some sort of 3d interference pattern

    • @CompactFlesh
      @CompactFlesh 4 ปีที่แล้ว

      Xx teardamage xX which would be a diffraction effect... see the answer in Seb‘s video 😂

  • @Kalingrato
    @Kalingrato 4 ปีที่แล้ว +1

    Good to know! Our future battleships will have bubble generators to distort incoming lasers. Thank you for saving us from future alien invasions.
    This was pretty fun. Good work.

  • @HyperBirbN3rd
    @HyperBirbN3rd 9 หลายเดือนก่อน

    I love that shirt lol. Indeed, we are all outside an aeroplane, and it’s NOT. THAT. COLD.

  • @Mountain-Man-3000
    @Mountain-Man-3000 4 ปีที่แล้ว

    LASERs + bubble party = epic win

  • @thomasr1051
    @thomasr1051 4 ปีที่แล้ว

    the point he makes about the guy holding the laser in a weird way points to the idea that he had a fishing line attached to the laser and off screen.

  • @Criticalmindfulness
    @Criticalmindfulness 4 ปีที่แล้ว

    We now have a new defense against laser weapons. Bubble machines.

  • @Lampe2020
    @Lampe2020 ปีที่แล้ว +1

    9:08 Yay, disco!

  • @johnbox5013
    @johnbox5013 3 ปีที่แล้ว

    You put so much effort into your shows. No wonder your a success. Leaving brain teasers in, just the subtle stuff nothing too overt. No wonder i keep coming back for more. Thinking of how you bounced the bubble off the lazer was an interesting 2 minute brain twister. That was stimulating. ..
    Not giving the answers away is just as fun. Heres a clue though. If you look carefully you'll notice that in every one of the shots some of the bubbles were effected by the lazer. Catching hold of it and spinning around it. I bet you guys had to remake that solution a bunch just so that didn't happen lol.

  • @Tizmox
    @Tizmox 4 ปีที่แล้ว

    9:47 what if you would put some food colouring in the water for your bubble, and maybe absorbs a bit more light. My hypothesis is that heating one spot will cause the pressure to increase in that specific area. Whether it will bounce off the laser or even stick to it could be found out through experimenting. Crank up the amount of different colours of food colouring as you go. Hopefully this effect will be noticeable before the bubble pops. Great video man! Nice collaboration

  • @Das644
    @Das644 3 ปีที่แล้ว

    remember the dual nature of light. it can behave as both a wave and a particle. perhaps as a particle in can collide with a surface or something. an inelastic collision which results in the sound/clicky sound heard

  • @drumkommandr9779
    @drumkommandr9779 4 ปีที่แล้ว

    cue styropyro busting through the wall like the kool-aid man @6:30 like
    DO NOT REPLICATE THE LASER STAR OF INSTABLINDNESS

  • @js267
    @js267 4 ปีที่แล้ว

    5:30 the reflected colors on the floor are amazing

  • @thesloppyscientist4428
    @thesloppyscientist4428 4 ปีที่แล้ว

    Bubble clearly changes trajectory upon interacting with the laser beam.
    Steve: clearly nothing happened.

  • @brianfox340
    @brianfox340 3 ปีที่แล้ว

    Seeing this video's title, my thought was "there's a 0.00000000000001% chance this works..... but IF it works, there's a 100% chance I'll buy however expensive a laser I need to be able to do this myself. "

  • @GlorifiedGremlin
    @GlorifiedGremlin 2 ปีที่แล้ว

    Imagine not wearing your glasses and you have to tell people you were blinded by a bubble

  • @micaiahstierle1281
    @micaiahstierle1281 4 ปีที่แล้ว

    2:52 “ever see a bit of bubble bounce”
    say that 10 times fast 😂

  • @ShadowYeeter
    @ShadowYeeter 4 ปีที่แล้ว

    Now i can tell physics teacher that light can be physically touched

  • @isaz2425
    @isaz2425 ปีที่แล้ว

    in theory, it's possible to use a laser to move transparent particles. But they need to be much smaller and lighter than a bubble of water, and they need to have a high enough refractive index (which bubbles don't have, because they contain mostly air).
    the way the laser bounces in the particle can create a force strong enough to move it and prevent it from escaping the laser.
    It's calles an "optical trap" and there are scientific papers about it.