SCIENCE CLASS #1- WHY Does Helium Make Your Voice Higher?

Comments 

  1. Mark Rober

    Mark Rober

    Year ago

    FIIIIRSSSST!!!

    • Mark shorts

      Mark shorts

      15 days ago

      @Kevin Luo very simplified :)

    • Rauwe saus Gamen

      Rauwe saus Gamen

      20 days ago

      @unknown ! wow lul mag dat wel van je moeder XD

    • Just Myself

      Just Myself

      Month ago

      19,95,205th😂😂

    • JustABob YT

      JustABob YT

      Month ago

      What that’s not fair

    • killakira12

      killakira12

      2 months ago

      Omg lol

  2. Crazi Russian13

    Crazi Russian13

    11 days ago

    He’s also reading a script I can see it

  3. Crazi Russian13

    Crazi Russian13

    11 days ago

    I like how he’s trying to act like bill nye

  4. SixthLace

    SixthLace

    12 days ago

    I'm going into 7th grade and Mark is making High school physics make sense to me 👍🏼👍🏼👍🏼👍🏼 Btw Mark is wicked smart

  5. SixthLace

    SixthLace

    12 days ago

    That's crazy air is not a gas but a liquid

  6. Rauwe saus Gamen

    Rauwe saus Gamen

    20 days ago

    bring thee trees back

  7. Ezra the fortnite God

    Ezra the fortnite God

    Month ago

    I want mark to be my teacher

  8. Vicki Sainsbury

    Vicki Sainsbury

    Month ago

    Sup mark how are you doing boi

  9. Ender Rider

    Ender Rider

    Month ago

    Hey dude you should make a channel for these types of vid

  10. Sci F 778 Mansi Saraiya

    Sci F 778 Mansi Saraiya

    Month ago

    I know all this but i still watched the whole video

  11. AwesomeKid

    AwesomeKid

    Month ago

    be my science teacher or piggy will catch you

  12. Megan A.

    Megan A.

    Month ago

    umm probably nobody will see this but ima ask this question how come u see really flat rocks then u see wierd shaped rocks???

  13. jamcdonald120

    jamcdonald120

    Month ago

    23:30 Because Heavier things totally fall faster

  14. Derek Rodriguez Nieves

    Derek Rodriguez Nieves

    Month ago

    Is another class gonna happen? I wanna be in

  15. ಥ_ಥ CG

    ಥ_ಥ CG

    Month ago

    im pretty sure EVERYONE would love him as there teacher

  16. Scott Borror

    Scott Borror

    2 months ago

    So he just explained to me why most women's voices are higher then men's. They exercise their vocal cords more (they talk too much).

  17. Sabina KC

    Sabina KC

    2 months ago

    Just become a teacher

  18. Sabina KC

    Sabina KC

    2 months ago

    15 minutes huh

  19. tickler1983

    tickler1983

    2 months ago

    Love how you do your vids! Why are people ticklish, can we not be ticklish, and is everyone ticklish?

  20. Darsshan M

    Darsshan M

    2 months ago

    This guys is a genious at explaining things. I fricking love him.

  21. My Smirf

    My Smirf

    2 months ago

    The pretty writer unprecedentedly search because silica concurringly form between a wise windscreen. unused, lamentable orange

  22. Neil Wadhia

    Neil Wadhia

    2 months ago

    0:50 sounds like a vampire

  23. Hannah Rich

    Hannah Rich

    2 months ago

    Yo be my high school teacher!!

  24. Kenza Rezyarifin

    Kenza Rezyarifin

    2 months ago

    Imagine mark is your physics teacher, everything make sense and you like science

  25. ☆A•F•N•N•I•A•M•F•E☆

    ☆A•F•N•N•I•A•M•F•E☆

    2 months ago

    Dude I wish you were my teacher, you mange to make everything interesting I would not get bored

  26. Andrew Xiao

    Andrew Xiao

    2 months ago

    Can't believe its already been over a year.

  27. Arthur Birck

    Arthur Birck

    2 months ago

    So is there any sound in space?

    • Hamza Ahsan

      Hamza Ahsan

      2 months ago

      There are no particles for the sound vibrations too travel through

    • Hamza Ahsan

      Hamza Ahsan

      2 months ago

      No

  28. Christian Guerrero

    Christian Guerrero

    2 months ago

    The Sience in school is way more boring but this is sience class is way more intresting

  29. Cookin' With Lil'

    Cookin' With Lil'

    3 months ago

    Wow, I was not expecting to understand that, but I did. Nice job Mark

  30. BlackNinja BS

    BlackNinja BS

    3 months ago

    What's the difference between v (= velocity) and a (= acceleration)?

  31. LORDxGOKU

    LORDxGOKU

    3 months ago

    a nerveus man

  32. WIDave0311

    WIDave0311

    3 months ago

    *_What the heck is going on there?_*

  33. Noel Ayanah

    Noel Ayanah

    3 months ago

    When Mark becomes a HS Physic teacher, I'm DEF going back to school. Do I care that I just graduated college and I'm in my 20s? No. Do I care that I actually sucked at physics in high school? No. Will I be old as Methuselah sitting in a high school class with my backpack and notebook? Yes, yes I will.

  34. dynamite gamer

    dynamite gamer

    3 months ago

    oil is hevier than water lol

  35. David Anderson

    David Anderson

    3 months ago

    Haha if he’s a science teacher/physics if the people know him on yt they will go crazy but he would make the classes so fun

  36. block bear studios

    block bear studios

    3 months ago

    So hydrogen would also make ur voice higher?

  37. kay

    kay

    3 months ago

    “im scared of public speaking” **wants to be a high-school teacher**

  38. Harmony Quinn

    Harmony Quinn

    3 months ago

    Freedom Units 💀

  39. Grifmister

    Grifmister

    3 months ago

    I learn more from your channel than I do in school

  40. pepsiVFX

    pepsiVFX

    3 months ago

    my mind is overgrowing...

  41. The awesome person Street

    The awesome person Street

    3 months ago

    Loving the education love since.

  42. Cody Thornburg

    Cody Thornburg

    3 months ago

    Thank you!

  43. Agosto Madden

    Agosto Madden

    3 months ago

    Please consider subscribing

  44. Henry Dwyer

    Henry Dwyer

    3 months ago

    Your way better than my teacher i learn so much from you

  45. Angel Jonguitud

    Angel Jonguitud

    3 months ago

    ;)

  46. Challenge Accepted

    Challenge Accepted

    3 months ago

    YOU CHEATED MAWK WOBER!

  47. Challenge Accepted

    Challenge Accepted

    3 months ago

    A

  48. Sven's History Lab

    Sven's History Lab

    3 months ago

    19:21 Mark Rober: help connect to others by making livestreams three times a week. Collin Furze: makes a six-foot tall corona-cycle

  49. Luke Borho

    Luke Borho

    3 months ago

    9:31 is crazy!

  50. The Sharks

    The Sharks

    3 months ago

    30:05 Did he just give MrBeast a shoutout thinking he is "not well known"?

  51. Venasai

    Venasai

    3 months ago

    I want mark to become my science teacher lmAo

  52. Pratyush Badrinath

    Pratyush Badrinath

    3 months ago

    He explained low mass / high mass and low area / high area without substituting and dividing. HE IS THE BEST PHYSICS TEACHER EVERRR

  53. Lizz Thatvegan

    Lizz Thatvegan

    4 months ago

    I can guarantee I would have passed science if you were my teacher. I hope your dream comes true because I think you could help influence younger people to pursue science. It took me until age 35 to not be afraid of it and part of that is because of your videos so...thank you for being awesome.

  54. MrChickinMan

    MrChickinMan

    4 months ago

    i love how the whole comment section is mainly about mark as a physics teacher, how he says his dream job is to be a high school physics teacher even though he used to work at nasa, and how he hates public speaking

  55. Luke Ford

    Luke Ford

    4 months ago

    I would actually do my homework

  56. Kian

    Kian

    4 months ago

    Who is still rewatching it in 2021?

  57. Roselle Nuñez

    Roselle Nuñez

    4 months ago

    the only online class i would like to attend

  58. Kakashi Hatake

    Kakashi Hatake

    4 months ago

    I never sucked helium EVER AND IM MAD AND REALLY SAD ABOUT THAT

  59. Dia

    Dia

    4 months ago

    1 year later.......hello.

  60. Cunt

    Cunt

    4 months ago

    You would definitely be the best physics teacher.

  61. The Swarm Clan

    The Swarm Clan

    4 months ago

    When your teacher does a whole topic on this and mark covers it all in 10 minutes 🤔

  62. Pacey Hoskins

    Pacey Hoskins

    4 months ago

    how cool would it be if mark was your teacher

  63. heavygar

    heavygar

    4 months ago

    at 17:33 merica

  64. Leah Dunley

    Leah Dunley

    4 months ago

    True! If he was a science teacher then I would not be bored at all ever!

  65. BRAYAN PLACK

    BRAYAN PLACK

    4 months ago

    fun fact it took the horn 11 secands to get to them

  66. VINCENT VELASQUEZ

    VINCENT VELASQUEZ

    4 months ago

    Cool

  67. BRAYAN PLACK

    BRAYAN PLACK

    4 months ago

    yeah kids do ask why alot

  68. Thebest Day

    Thebest Day

    4 months ago

    I wish he were my physics teacher, class would be so fun

  69. YUNUS PIRIM

    YUNUS PIRIM

    4 months ago

    if mark loves the word why then the world will be: why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? why? :)

  70. YUNUS PIRIM

    YUNUS PIRIM

    4 months ago

    mark should make M.R.F.R. (mark rober physics robot)

  71. Ishuman Chaudhary

    Ishuman Chaudhary

    4 months ago

    Tomorrow's someone's birthday. Dropping a video would be a treat for us, even for the celebration.. Love you Mark. Happy birthday in advance.

  72. jdnh47

    jdnh47

    4 months ago

    THIS IS NOT THE CORRECT EXPLANATION. First, weight of the air molecules does NOT have much of an effect on the frequency at which vocal chords vibrate. Vocal cords vibrate at a rate primarily determined by the elastic force of the muscle. Think of a pure vs damped oscillator. Damping doesn't change the frequency by much. To change the frequency by even a small, but detectable amount, you'd need a significant change in damping force relative to the elastic force of the vocal muscles, and this simply isn't so. Further, this effect simply can't explain the drastic differences we hear in the video. But if the frequency doesn't change, why do the voices sound so different? First, you need to understand that nearly the entirety of your voice actually comes from resonance. THE VOCAL CHORDS THEMSELVES SIMPLY MAKE A HIGH BUZZING SOUND - kind of like the mouthpiece of a woodwind or brass instrument. IT IS THE SHAPE OF THE INSTRUMENT / YOUR VOCAL TRACT AND HEAD that gives your voice it's primary quality and tone. Now for the final piece of the explanation: A RESONANT CHAMBER RESPONDS TO WAVELENGTH, NOT FREQUENCY. (With your vocal tract and head consisting of many complex resonant chambers). Namely, a resonant chamber will resonate primarily with sounds that have a wavelength that is roughly the same length as it (with a factor 2 or 4 depending on open/closed tube), as well as harmonic wavelengths that are an integer fraction of the fundamental wavelength. THE FUNDAMENTAL (same length as resonant chamber, with a factor of 2 or 4 depending on open/closed tube) WAVELENGTH RESONATES THE MOST, WHILE SHORTER HARMONIC WAVELENGTHS RESONATE LESS AND LESS (the higher the harmonic is). Now consider: WHILE FREQUENCY IS THE SAME, WAVELENGTH GETS LONGER IN HELIUM because the speed of sound is greater (lighter molecules propagate sound faster, and remember relationship that (speed of wave) = (wavelength)*(frequency)). This means that LOWER FREQUENCIES GET FILTERED OUT IN HELIUM BECAUSE THE WAVELENGTH BECOMES TOO LONG TO RESONATE. Likewise, HIGH FREQUENCIES ARE AMPLIFIED BECAUSE THEIR WAVELENGTHS BECOME CLOSER TO / EXACTLY THE FUNDAMENTAL WAVELENGTH FOR A GIVEN RESONANCE CHAMBER. And thus your voice (which consists of many frequencies overlayed) sounds higher with helium because higher frequencies are amplified/resonate more and lower frequencies are suppressed. Also, you can think of it a bit like a high pass filter. Hope this clears things up, because there's a lot of contradicting stuff out on the internet, and I've done a lot of digging.

  73. Awesome Guy

    Awesome Guy

    4 months ago

    What school are you going to teach at, because I want to enroll in it now!

  74. Patricia Anguiano

    Patricia Anguiano

    4 months ago

    “5 seconds for every mile in freedom units uh I don’t know what it is in kilometers... ‘America!’” *raises his hand* That had me laughing so hard!

  75. Timmeh

    Timmeh

    4 months ago

    losrt

  76. welkcub nairb

    welkcub nairb

    4 months ago

    Can anyone explain the down votes? I do not get it

  77. SUBMINALAURA

    SUBMINALAURA

    4 months ago

    I learn more in this than i would learn in a single science lesson in class

  78. Sean Corbett

    Sean Corbett

    4 months ago

    my science teacher is sooooo boring... Mark would make things waaaayyyy better

  79. irgikalisca

    irgikalisca

    4 months ago

    11:05

  80. Heshu Kawi

    Heshu Kawi

    4 months ago

    im bout to do my 10th grade exams i saw the first clue and knew what it was. can i just say im very proud of myself :")

  81. Daman Singh Chawla

    Daman Singh Chawla

    5 months ago

    this is real science

  82. Nagarjun Kashyap

    Nagarjun Kashyap

    5 months ago

    The balance between a five year old and a PhD is a five and a half year old. Change my mind.

  83. Shawn Gillen

    Shawn Gillen

    5 months ago

    I’ve been an Architect for 20 years and have loved everything about science my entire life. I had NEVER had someone explain why helium makes your voice higher! I found myself smiling at that “Eureka” moment. My 16 year old son loves everything you’ve ever done and I’m glued to my screen every video as well. Keep up your enthusiasm; it’s addictive.

  84. Sean Subando

    Sean Subando

    5 months ago

    This is the first time I listen to class

  85. Fredbear Adventures

    Fredbear Adventures

    5 months ago

    To all scientist If anyone has a class with mark rover Make me trade lives with them

  86. Captured with Iphone

    Captured with Iphone

    5 months ago

    i have nothing to say other than, wow I LOVE U. like do more of these videos PLEASE:)

  87. Arif Zamri

    Arif Zamri

    5 months ago

    hey what you're doing ! Respect the class please

  88. Charls Insigne

    Charls Insigne

    5 months ago

    I'd be lucky if my teacher in science physics is you but dang I live in ph

  89. Lynx Majic

    Lynx Majic

    5 months ago

    7:30 "There's no fluid" Flap flap 😂😂😂

  90. Fick Dich

    Fick Dich

    5 months ago

    Why do you have to wait for a qualification? İf anything they have to check how overqualified you are

  91. Lilli and Sara

    Lilli and Sara

    5 months ago

    Mark: through your computer or phone Me who's watching on an ipad: ;-; why to I exist

  92. Lucky 360

    Lucky 360

    5 months ago

    I don’t think this is correct. Your vocal cords vibrate at the same frequency for all 3 gasses. The reason your voice is higher with helium is because the speed of sound is faster through that gas due to its lower density (and similar compressibility) than air. This changes the resonances of your vocal tract by making it more responsive to high-frequency sounds, so the low parts of your voice are still there, they’re just not as prevalent as the higher pitch ones with the helium. Someone please correct me if I’m wrong though, this is just what was taught to me in physics.

  93. adam king

    adam king

    5 months ago

    You are the Keanu Reeves of physics. My daughter loves you and your videos and for that I thank you.

  94. Prem Parekh

    Prem Parekh

    5 months ago

    Does that mean that speaking with the sulfur gas would be harder? And speaking with the helium gas would be even easier than talking normally? Someone answer lol

  95. ting durrans

    ting durrans

    5 months ago

    Ur the ONLY one who I would watch teaching physics 1 like = 1 person that agrees

  96. ting durrans

    ting durrans

    5 months ago

    I love how many times Mr . rober kept saying “we’re live”

  97. Chuck

    Chuck

    5 months ago

    *pre Donald Trump* Americans: "MERICA!! YEEAH" *after Trump* Americans: 17:33 .........merica..

  98. Crantrex

    Crantrex

    5 months ago

    Like breathing in sulllffuuuuuuuuuuuuuur

  99. Dreanne Music

    Dreanne Music

    5 months ago

    Mark: my dream job was to be a highschool teacher Also mark: doesn't like public speaking

  100. Magnús Ari Guðmundsson

    Magnús Ari Guðmundsson

    5 months ago

    helium is lighter than air

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