SCIENCE CLASS #4- How to Waterproof Your Hand


  1. Mark Rober

    Mark Rober

    Year ago

    Thanks for attending! Remember, no class on Weds because I'm filming a normal vid but we'll be back on Friday with a super juicy one!

    • Venti


      8 days ago

      If you were a science teacher I would enjoy it more, you make everything so interesting!

    • Aaron Bargotta

      Aaron Bargotta

      Month ago


    • gaming vids ✔

      gaming vids ✔

      2 months ago


    • fatah habibi

      fatah habibi

      5 months ago

      Nñ uu

    • Nora Faveur

      Nora Faveur

      5 months ago

      Please differentiate between the types of engineering. I don't know what to choose

  2. J M

    J M

    5 days ago

    How to waterproof your hand hmm easy wear gloves class is over.

  3. Jacob Asher

    Jacob Asher

    Month ago


  4. Amjad Muhammad

    Amjad Muhammad

    Month ago

    If Mark Rober was my physics teacher !!!!.

  5. Shruti Vavilala

    Shruti Vavilala

    Month ago

    1. 23? 2. Water goes up and sidewayscuz there’s no gravity? 3. Also for the pepper experiment I used milk so you can se it better

  6. Aaron Bargotta

    Aaron Bargotta

    Month ago


  7. Caesar Bro!

    Caesar Bro!

    Month ago

    I bet Bellarmine College Prep would hire you.

  8. Lily Jesse

    Lily Jesse

    Month ago


  9. Lily Jesse

    Lily Jesse

    Month ago

    Ummm hi

  10. Diana Hampton

    Diana Hampton

    Month ago

    Mark, your videos are fantastic thank you. You did leave out an important factor with water going up the trees: transpiration. The evaporation of the water out the pores of the leaves creates a pull like sucking on a straw and pulling the water out of the tree. Cohesion and adhesion assist in this, but will not alone cause the water to climb high enough, it’s the pull from the top, the tension at the top working with the two forces That causes the upward movement of water. You probably already know this but I thought it was important point to share. Thanks again for your inspiring work.

  11. Augusto N

    Augusto N

    Month ago

    Wear a glove

  12. Wolf_ Master

    Wolf_ Master

    2 months ago

    How water proof hand,use wax

  13. DUCK Master

    DUCK Master

    2 months ago

    thank for doing me a knowledge

  14. RodrixQ


    2 months ago

    This is better than real college

  15. Glenn and Lillian

    Glenn and Lillian

    2 months ago

    Why are you saying rover? it's rober.

  16. 11_GM_A_33_Malaviya_Henil


    2 months ago

    He Is better than my School :D edit: I mean a lot lot lot better

  17. Whatever Yousuck

    Whatever Yousuck

    2 months ago

    Love it

  18. GhostSixActual


    2 months ago

    For what it's worth: I think you'd be a great high school science teacher but I think your skills, personality and passion would be of a greater value outside of the constraints of our standard education systems. Please continue to educate hundreds of thousands of children AND adults by making videos online or via a similar medium. Spend your time there instead of in a standard classroom.

  19. Existence


    2 months ago

    The rona: 0/10 Mark's teaching skills: 10/10

  20. Lena Jasmine

    Lena Jasmine

    2 months ago

    I don't get why people gave this a 'thumps down': if you don't want to know how to water proof your hand, JUST DON'T CLICK ON THE VIDEO

  21. 152 Srikar Yendluri

    152 Srikar Yendluri

    2 months ago

    3:40 wow teachers should use these hotwheels tracks to teach

  22. Zach Rivera

    Zach Rivera

    2 months ago

    I literally said 39 for the penny thing. We did this in school a year ago.

  23. Mihai Ciudin

    Mihai Ciudin

    3 months ago

    May you please create more SCIENCE CLASS videos

  24. Ttv Mix

    Ttv Mix

    3 months ago


  25. Zoe Diakides

    Zoe Diakides

    3 months ago

    I love this

  26. Angel Jonguitud

    Angel Jonguitud

    3 months ago


  27. Hannah Hill

    Hannah Hill

    3 months ago

    What’s the song at the very beginning

  28. Adjusted Xbl

    Adjusted Xbl

    3 months ago

    I just found a new way to waterproof your hand...............CUT IT OFF

  29. Ezekiel Pineda

    Ezekiel Pineda

    3 months ago

    5:08 counting with mark

  30. Amrit Singh

    Amrit Singh

    3 months ago

    I have a question. Does cohesion and adhesion occur in substances other than water?

  31. Mack S.L.

    Mack S.L.

    3 months ago

    Absolutely love this, would totally have liked science if you were my teacher when I was in high school or even college! Would love to see better lighting though, it’s so dark compared to your regular videos. Congrats on all your success, your truly an inspiration to learn and grow, and of corse to catch sticky fingered morons who steal packages!

  32. Manyu V Reddy

    Manyu V Reddy

    3 months ago

    they might use ropes to create the exact pull like the one that earths gravity puts to weigh themselves in space

  33. Jackson Shoemaker

    Jackson Shoemaker

    3 months ago

    your wayy better than my science teacher lol

  34. Daryl Ma

    Daryl Ma

    4 months ago


  35. KrishnanandaK


    4 months ago

    Wait if you water proof your hands does it not let the germs get on our hands?

  36. Smith Bob

    Smith Bob

    4 months ago

    Mark some years ago:I wanna quit working for NASA and be a youtuber Mark today:I wanna be a science teacher some day Me: It's evolving just backwards

  37. It's Anya Pandey

    It's Anya Pandey

    4 months ago

    I literally have never seen such an interesting live stream .The live classes were really informative . Thank you so much Mark !🐶

  38. Kaiser Wilhelm II

    Kaiser Wilhelm II

    4 months ago

    going to the comment section is the equivalent of talking to your friends when the teacher is explaining something

  39. Flu1dz_


    4 months ago


  40. Fire Ant

    Fire Ant

    4 months ago

    I think they could weight them self by spinning to make artificial gravity then try to match earths gravity

  41. Not Epic Stuffify

    Not Epic Stuffify

    4 months ago

    how to handproof my water?

  42. Vivian Niu

    Vivian Niu

    4 months ago

    me trying to figure out how to be waterproof to swim faster: hmmmmmmmmm *covers self in baby powder and goes to swim practice*

  43. Denyse Cassy

    Denyse Cassy

    4 months ago

    The absorbed pond surgically rescue because banjo undesirably request qua a blue water. funny, inquisitive duckling

  44. Yuh Yuh

    Yuh Yuh

    4 months ago

    Sometimes when I am home alone I put oil on my body and slide around my house as if I am a snail 😅✋🏻

  45. Charlie Pledger

    Charlie Pledger

    4 months ago

    Your the best. Nothing else to say

  46. Hyein Clifton

    Hyein Clifton

    4 months ago

    Trees use adhesion to suck up the water rom the rain like the paper towel.

  47. Laura Biggs

    Laura Biggs

    4 months ago

    I think 10

  48. Lpaul


    5 months ago

    The kids that get you as a teacher are going to be pretty lucky.

  49. Joshy Greene

    Joshy Greene

    5 months ago


  50. Master OON

    Master OON

    5 months ago

    Isnt your hand already kinda waterproof

  51. Renee McGregor

    Renee McGregor

    5 months ago

    You're gonna be an Amazing Teacher, coz you already are!

  52. Virtual Blitz Gaming

    Virtual Blitz Gaming

    5 months ago

    You would be an amazing teacher when you do decide to teach

  53. Xvert_Sloppy


    5 months ago

    i did this experiment in 6th grade, I think i got like 102

  54. Leo Lyu

    Leo Lyu

    5 months ago

    man i miss these

  55. HappyPlays


    5 months ago

    i just realized that mark wears the same hat in every video

  56. yeeyeetpr1yam


    5 months ago

    Anyone notice at 3:49 that he used a hot wheels track to point at the mug lol

  57. Sir. EyeBat

    Sir. EyeBat

    5 months ago


  58. Kevin O'Reilly

    Kevin O'Reilly

    5 months ago

    Question: i broke several bones in my hand and had reconstructive surgery, there was massive swelling. When i started PT i noticed that the skin on my hand was ultra water proof like teflon. Its been this way for months now. Do you know why??

  59. Luka Kotur

    Luka Kotur

    5 months ago


  60. Jonny H

    Jonny H

    5 months ago

    You sure that a virus has DNA?

  61. DRS


    5 months ago

    My uncle used to put soap in the water tank where the cows drank to keep the ducks out of the tank. It broke the surface tension. The ducks would sink so they stayed out. I guess it was better for the cows to drink a little soap than duck crap. We also put soap on the hill in our front lawn. We had a lot of clay in the soil. The water would run off. The soap broke the surface tension and allowed the water to soak in.

  62. Allen Bruntz

    Allen Bruntz

    5 months ago


  63. BH4VIK


    5 months ago


  64. Rispiee


    5 months ago

    Anyone heard of the flu

  65. From noob To pro

    From noob To pro

    5 months ago

    Lol his pointer is a car track

  66. Nick Zamora

    Nick Zamora

    5 months ago

    He always says "oi!"

  67. Jalxys


    5 months ago

    nobody: me: SOAP POWERED BOAT

  68. sue Hull

    sue Hull

    5 months ago

    I need talc hairspray for rainy days please.

  69. Sandhya Mangari

    Sandhya Mangari

    6 months ago


  70. jufmi9


    6 months ago

    I just want to say that the way you teach is in my opinion the best way to go about it. For me at least, I learn and memories subjects the best when I get a mental model, only then do I feel like I fully understand it, which is exactly what you do. So if this is how you want to teach at schools, your students are going to love you. You'll be THE mister Rober from school, not just that famous guy from the internet (at least, that's how it worked at my school, the best teachers get school-wide recognition). Good luck!

  71. MrOrnald


    6 months ago

    I like your videos but this time it is too chaotic. You clearly didn’t have idea how to explain all of this information and you tried to improvise it a bit. It failed but don’t stop. I believe you will make progress as a “teacher” and your future videos will be much smoother

  72. Robert Pazzini

    Robert Pazzini

    6 months ago

    The paper clips didn't sink a bit bc of Archimedes and displacement.

  73. Mais Mehl

    Mais Mehl

    6 months ago

    What's with all the interlacing?

  74. unbekannt unbekant

    unbekannt unbekant

    6 months ago

    what is with arogel

  75. minecraft dj Alex

    minecraft dj Alex

    6 months ago

    oooo i miss a class wait teacher rober

  76. shel0650 shel0650

    shel0650 shel0650

    6 months ago

    Dude I love u but you could just your hand in Vaseline and wambam thank you Mamma you got a water proof hand

  77. Vlasta Khanova

    Vlasta Khanova

    6 months ago

    I think astronauts way themselves down near earth where gravity is normal and way themselves but not all the way

  78. Lynn Clift

    Lynn Clift

    6 months ago

    Me: gets a real boat and 10 buckets of soap 🚣‍♀️🚣‍♀️🚣‍♀️🚣‍♀️🚣‍♀️🚣‍♀️🚣‍♀️🚣‍♀️

  79. Loopzy


    6 months ago


  80. Kayliegh's Korner

    Kayliegh's Korner

    6 months ago

    I think that maybe you can put ummmm (thinks of first number in mind) 15 drops of water on a penny also I love your vids

  81. Heather McD

    Heather McD

    7 months ago

    What was the stuff the guy in the pool was covered in that stopped him from getting wet

  82. Buckie Smalls

    Buckie Smalls

    7 months ago

    Soap breaks down fat.. Yet fat is used to make soap.. Talk about washing the hand that feeds you.

  83. oscar trevizo

    oscar trevizo

    7 months ago

    Can't I just watch Mark Rober instead of doing zoom

  84. Michael Wyzkiewicz

    Michael Wyzkiewicz

    7 months ago

    Can't you just cut up a banana and rub it on your shoe and it will make it water proof

  85. Scarlette Ruelas

    Scarlette Ruelas

    7 months ago

    I’m a kid so hopefully I get u as my teacher in high school

  86. Ming Yi Quek

    Ming Yi Quek

    7 months ago

    i'm pretty certain that tall trees draw water up by mainly transpiration pull, not adhesion/ capillary action

  87. A Sarandeses

    A Sarandeses

    7 months ago

    I need this because of my hyperhidrosis 😂

  88. Skech


    7 months ago


  89. F S

    F S

    7 months ago

    This is fun. It's like see my science teacher in junior high school but without the cool presentation.

  90. Lawrence Hart

    Lawrence Hart

    7 months ago

    I hate school and I think this stuff is cool

  91. The Graceyn And Maddy Show!

    The Graceyn And Maddy Show!

    7 months ago

    Now this is a mug of water Also him he is using a hot wheels track to point to it I love your videos ❤️



    7 months ago

    What no way Really coollllllllllllll

  93. Nikolaj Leithe

    Nikolaj Leithe

    7 months ago

    Did enyone notice hes using a hot wheels track😂

  94. Kim Otna

    Kim Otna

    7 months ago


  95. Matthew d

    Matthew d

    7 months ago

    38 drops

  96. Margaret Davies

    Margaret Davies

    7 months ago

    Hi Mark you should do this again!

  97. Jessica Greulich

    Jessica Greulich

    7 months ago


  98. Gamini Jayasuriya

    Gamini Jayasuriya

    7 months ago

    Mark so does this mean that if I jump off a bridge into a river I’d have a better chance of surviving if I’m soaked in soap?

  99. Ayham Ayham

    Ayham Ayham

    7 months ago


  100. Jack Grant

    Jack Grant

    7 months ago

    I skipped actual science class for this