SCIENCE CLASS #4- How to Waterproof Your Hand


  1. Mark Rober

    Mark Roberヶ月 前

    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!

  2. Mihir Kagalkar

    Mihir Kagalkar11 日 前

    14:30 Vitamin D does not contain fat it is fat soluble like Vitamin a , e and k (including d) except that the video rocks I love your way of explanation

  3. Betsy Peterson

    Betsy Peterson21 日 前

    how are you so positive always

  4. Just F0ll0ws

    Just F0ll0wsヶ月 前

    How many 'magnet' related answers did people give? - Have your paperclip surface tention sample set up on a table you can get under, use a magnet under the table to increase the downward pull on the clips creating enough downward pull to break the tension.

  5. Key’on Vlogs

    Key’on Vlogsヶ月 前

    NITMe2 V2 Actually 4th

  6. Yeezy

    Yeezyヶ月 前

    @Bipil Krishna lol, nice one

  7. dt. daniellexx

    dt. daniellexx時間 前

    Now this is the science that tickles my senses

  8. Sun Hat

    Sun Hat3 時間 前

    "How to waterproof your hand." Done. It already ACTIVELY controls its own water permeability. Also, you clearly do not know physics well. You would make a fun entertainment for one hour, but your science is really bad. Please never try to be a teacher.

  9. MentoForKids

    MentoForKids7 時間 前

    I remember watching a “Mr. Wizard’s World” on Nickelodeon in the 90’s where he dusted the top of an aquarium filled with water and dropped a bolt in it. He reached for the bolt, and his hand was dry. Mind blown. Thank you for doing this because for the past 30 years, I’ve been wondering how he did that.

  10. HOLY POTATO Jack

    HOLY POTATO Jack16 時間 前

    Question: would the soapy foam boat work in salt or fresh water better? Please like so he can see

  11. M J

    M J19 時間 前

    I don’t know if you have ever heard of a summer camp called “mad science” but we did all kinds of stuff like this, soap and water, dry ice stuff, robotics, general learning about science, that the only reason I knew what plasma was, cause we had one of those plasma ball things so we could learn an electricity.

  12. Bujju Babbu

    Bujju Babbu日 前

    I mean if you multiply the mass inertia with the average adults weight you can figure out the approximate result

  13. Elle Stern

    Elle Stern2 日 前


  14. Elle Stern

    Elle Stern2 日 前


  15. Elle Stern

    Elle Stern2 日 前

    The water floats

  16. Elle Stern

    Elle Stern2 日 前


  17. R3b3l Ray

    R3b3l Ray3 日 前


  18. Aleksandar Gapkovski

    Aleksandar Gapkovski5 日 前

    Definitely my favourite class

  19. tand more

    tand more5 日 前


  20. omg it's me

    omg it's me5 日 前

    He is really really good. I mean he is so smart and I love watching his videos.

  21. a A

    a A6 日 前

    I bet my science teacher can't answer to a single of those questions like the way Mark Rober did. Like=you agree have a similar teacher like mine

  22. proNOTbuyer TO

    proNOTbuyer TO6 日 前

    <a href="#" class="seekto" data-time="890">14:50</a> Bob Ross right there

  23. Kichu Playz edu

    Kichu Playz edu7 日 前

    People who dislike mark rober is chinas space agency's alt accounts because he used to work at nasa

  24. Extended YT

    Extended YT8 日 前

    I wish if you were my teacher my teacher sucks at teaching science :(

  25. Rajesh Elumalai

    Rajesh Elumalai9 日 前

    more than 50 more than 60 61 62 63 64 65 drops

  26. Rishypotter 987,514

    Rishypotter 987,51411 日 前

    <a href="#" class="seekto" data-time="870">14:30</a> - is this art or physics

  27. Geoffrey Willmoth

    Geoffrey Willmoth12 日 前

    35to 40 is my guess mark

  28. Bas Rene

    Bas Rene13 日 前

    Best science teacher ever

  29. tsunami beast

    tsunami beast13 日 前

    Your hand is already waterproof

  30. Zachariah M. Baird

    Zachariah M. Baird14 日 前

    Actually, Veritasium made a video about how trees work, and they don't use capillary action, they use negative pressure.

  31. The Fat Man

    The Fat Man17 日 前

    don't use the same stuff used to waterproof your shoes as it will burn your skin with the chemicals used in the solution!

  32. 9P Pya

    9P Pya18 日 前

    Coconut oil

  33. kirispine kousihaa

    kirispine kousihaa19 日 前

    Your a much better physics teacher than ours

  34. Brennen Wright

    Brennen Wright19 日 前

    So... should we drink soap to lose fat?😂😂

  35. Just_life J

    Just_life J20 日 前

    Imagine disliking videos

  36. gummy bear

    gummy bear20 日 前

    I love how u used a race car track for a pointer stick :D

  37. krsdog

    krsdog21 日 前

    I am going to make an Edpuzzle with this! My 8th graders will love it AND it hits the learning goals.

  38. Porter T

    Porter T21 日 前

    I really enjoy your videos, and I noticed some of your captions have minor errors and wanted to help adjust them so that people with hearing impairment can enjoy your videos and understand them accurately. For instance, at <a href="#" class="seekto" data-time="459">7:39</a> the caption reads ”it’s coming up to divine” but it should be “It’s becoming a tube of water”. I have created a list of other corrections if you are interested. Thanks, Porter (8th grade)

  39. Yannick Chasles

    Yannick Chasles21 日 前

    For Diana question you can push with a fix force and look at the acceleration or with a fix acceleration and look for the force needed.

  40. Yannick Chasles

    Yannick Chasles21 日 前

    Tree use negative pressure from watter evaporation to get the watter up.

  41. 2Thicc4You

    2Thicc4You22 日 前

    I wish schools had a system where they had their normal curriculum but on a certain day like every Friday, all the teachers find a topic to teach using real world problems/phenomena, like how mark does his science classes, so for example, geography class or history class would talk about an embarrassing or funny/interesting moment is U.S or world history, or a crazy place that defies all logic, and is mysterious like the place called the devils hole or something like that that has a hole in the water like a waterfall in the middle of a lake for unknown reasons. It would help keep students interested and enjoy school more. I know I would.

  42. Fer Reaf

    Fer Reaf23 日 前

    <a href="#" class="seekto" data-time="817">13:37</a> Man breaks city’s dam and ruins entire water supply

  43. Giuliana Butera

    Giuliana Butera23 日 前

    Whenever I see you on a different channel I go like: OMG ITS HIM GUYS REEEEEEEEEEEEEEEEEEE

  44. Ari's little world

    Ari's little world23 日 前

    you should still do this when covid is over

  45. Duck Butt

    Duck Butt24 日 前

    How to waterproof your hands: Step 1: Wear a glove.

  46. Pranay mohla

    Pranay mohla25 日 前

    Lol instead of a scale he used an hot wheel track <a href="#" class="seekto" data-time="220">3:40</a>

  47. Joemoe95 River hunter

    Joemoe95 River hunter25 日 前

    I want to have you for a high school teacher

  48. bauerpower13

    bauerpower1325 日 前

    My dream come truuuuuuuuuuuuuuuuuuuuuuuuu

  49. Samuel Ledesma

    Samuel Ledesma25 日 前

    18 drops of water on the penny

  50. Kalai Kumar

    Kalai Kumar26 日 前

    How can I use it to stop my sweaty palm?

  51. Barry Lustgarten

    Barry Lustgarten26 日 前

    good job

  52. CFTV Data

    CFTV Data26 日 前

    I wish you had been my high school science teacher, Mark... I would have paid much closer attention in class!

  53. Hyped Robloxian

    Hyped Robloxian26 日 前

    My kids, they RUN to the TV to turn on the show. They love what you're doing and they're learning a lot. I hope you're able to keep doing it for a while!

  54. MeguminUwU

    MeguminUwU26 日 前


  55. i b e a g y m n a s t animatesss

    i b e a g y m n a s t animatesss28 日 前


  56. Vadim

    Vadim28 日 前

    So our isnt waterproof

  57. Pooplifes

    Pooplifes28 日 前

    i have this for science class lol

  58. Hang Zhang

    Hang Zhang28 日 前


  59. Samit

    Samit29 日 前

    Maby a 50

  60. Samit

    Samit29 日 前

    Then why there is more pressure at bottom

  61. John Borja

    John Borjaヶ月 前

    <a href="#" class="seekto" data-time="1285">21:25</a> batman

  62. eduardo aracena

    eduardo aracenaヶ月 前

    multiplying the effects of gravity time how much they weighed in space

  63. Dr. Ding Dong here to help with ur needs

    Dr. Ding Dong here to help with ur needsヶ月 前

    lol he is using a hot whee;s track

  64. Wesley Taylor

    Wesley Taylorヶ月 前


  65. Taken Gaming

    Taken Gamingヶ月 前

    When you can't find a pointer.... *Well a Hot Wheels track works just as well.* 😂

  66. XavierProdz

    XavierProdzヶ月 前

    so if i eat soap i’ll be fat free lol

  67. Kaps-Baha

    Kaps-Bahaヶ月 前

    does anybody else's family pull a simpsons and all hop on the at the same time because Mark Rober is live?

  68. Toad ya Boi 930

    Toad ya Boi 930ヶ月 前

    Notice mark is using a hot wheels track for his pointer

  69. Anthony Portillo

    Anthony Portilloヶ月 前

    3 or 2

  70. Ponie Crazie

    Ponie Crazieヶ月 前

    Does this experement work with dioderent.

  71. Claudeona_lesley

    Claudeona_lesleyヶ月 前

    Normal teachers: uses a hand pointer or a stick Mark Rober: Uses an race car track 💀💀💀💀💀💀💀💀

  72. Anglers for dummies

    Anglers for dummiesヶ月 前


  73. C M

    C Mヶ月 前


  74. Elizabeth Valentine

    Elizabeth Valentineヶ月 前

    ya if your gonna be a physics teacher one day how about you do it in kentucky (mostly because i want u as my teacher)

  75. Sun Jason

    Sun Jasonヶ月 前

    @alexander patrick

  76. Peter White

    Peter Whiteヶ月 前

    Can you build a jet engine or turbo jet engine please?



    Mark you are telling me that you want to be a high school physics teacher AS I AM GRADUATING HIGH SCHOOL I’m so jealous

  78. sitecap

    sitecapヶ月 前

    Mark - my daughter and I love your videos - they are so great and educational. One small thing - the coronavirus SARS-CoV-2 is an RNA virus - it has no DNA. The RNA strand gets into the host cell and is transcribed into proteins that then replicate the virus. Blow this up so Mark can see it.

  79. Karl Stark

    Karl Starkヶ月 前

    Weight = mass X gravity Mass= density x volume. So shrink wrap an astronaut to make a mold. Fill that mold with ketchup. Measure the amount of ketchup to give you volume. Use the average density of a person multipled by the volume you just pumped out of the shrink wrapped person to give you mass. Multiply that by gravity and BOOM! Your answer will probably be wrong. It is a trick question you just use a cosmic scale.

  80. carlos resendiz garcia

    carlos resendiz garciaヶ月 前

    love your vids

  81. Lee Draper

    Lee Draperヶ月 前


  82. Baohua Chen

    Baohua Chenヶ月 前


  83. Martin Wej

    Martin Wejヶ月 前

    Soap enforces Social Distancing

  84. Lego Films

    Lego Filmsヶ月 前

    This must be a pretty large classroom lol.

  85. Joshua Slates

    Joshua Slatesヶ月 前

    Average students per class: *25* Average students, in lecture halls: *275* Average students from Mark Robers class: *Almost 600,000*