Bernoulli Effect - Science Theater 17

Want the fastest way to redecorate a tree using toilet paper? Use Science! Specifically, use the Bernoulli Effect - one of the principles involved in helping airplanes fly!

Category:

Entertainment

Tags:

• science
• physics
• education
• demo
• bernoulli
• effect
• toilet
• paper
• airplane
• lift

[SinnerByAnyOtherName]

Ummm, bernoulli effect with blowing along the top of the strip of paper - minor .... entrainment is the main effect.

[sciencetheater]

@SinnerByAnyOtherName I'll grant you that... very minor... but blowing water through straws to get your table-mates wet? ... priceless...

[szczepansky]

If the pressure is lower on the side the air moves faster, why doesn't the opposite happen if you blow UNDER the piece of paper?

[sciencetheater]

@szczepansky Hmm, it should be the same effect, it is drawn downwards... but it is already sagging down... try it with a stiff piece of paper and it should be pulled downward I think...

[szczepansky]

@sciencetheater Have you tried it with a stiff piece of paper? No appreciable force to be found. When you do it over the floppy piece of paper you're not seeing the Bernoulli effect. The fast moving air is exactly the same pressure until it reaches the curved surface. Bernoulli's principle only describes the same bit of air as it moves.

[sciencetheater]

@szczepansky Hmm, interesting. I could concede that. I'll have to think about it and toy with it a bit... (It's such a fun effect, but its a bit dicey to try to popularize since it is actually a bit technical in the details...)

[88Kamikaze69]

I gotta tell you man, I wish I had a teacher like you when I was a kid, I might not have ended up being the smartass under achiever that I am today ^^

Just so sad that you have to grow older before you really realise how much potential you wasted as a kid not paying proper attention in school :/

Keep up the good work man, if you use this kind of teaching method and enthusiasme (<spelling error?) in class your students should turn out pretty good ^^'

[deviljabberwock]

Thanks for the helpful video :)

i wish my physics teacher teaches like this

[stefanomunibez]

Fag

[Gruppy13]

3:58 the new way to tepee a house!

[LFchinatown]

@sciencetheater I went to a Blue man group show when they came to my town and one of the things they did when they shot confetti all over was they shot toilet paper into the crowd just like you did in your demonstration. They had four industrial fans with angled pipes that they fit rolls of toilet paper onto for the sole purpose of shooting toilet paper into crowds using the bernoulli effect.