Vacuum Cannon - Sixty Symbols

We discuss vacuums, pascals and show you a special vacuum cannon, which fires ping pong balls at 400 miles per hour. More physics at http://www.sixtysymbols.com/

Category:

Science & Technology

Tags:

• vacuum

[00beasis]

Bring on the second generation!!

[Joe22c]

Yes!

[alfader1]

is the guy from 5.49 jd,guy from scrubs

[chris11sholtz]

FIRE ZE MISSILES!!!

[kousoulides]

You look good with the bono glasses.

[nukm4]

Must. Construct. Vacuum Cannon. Must. Destroy. Coke Can.

[youluvana]

i use vacum cups to lift glass sheets at work. its kinda freaky how the air pushes glass and rubber cup together creating so musch friction.

[JapanForSale]

@shogoonn Thanks for laying down the knowledge on my humbled self.

[shogoonn]

@JapanForSale There's nothing special about the materials, as there is almost no difference between 1 nPa and, let's say, 1 kPa vacuum in terms of structural integrity. The only thing one have to consider is the pressure difference (not the ratio) between the inside and the outside, which in both cases is about 100 kPa. The material needs to be impermeable and cannot release any gases. In most cases plain stainless steel (like 316) with copper seals is enough. Check 'Ultra-high_vacuum' on wiki.

[JapanForSale]

OK, so here're 2 things: a question, and then an observation.

Q: You talked a little bit about the stainless steel vacuum chambers, and the need to evaporate the water on the surfaces. But what kind of materiel is needed to withstand that kind of less pressure inside? What techniques (construction, treatment, etc.) are needed to create something "vacuum rated"?

O: Even physicists enjoy the simple act of smacking something into something else. ;) Shows you're not just about cold hard facts, eh?

[dragonology294]

When the air inside the pipe was being sucked... why doesn't the ping pong ball explode?... coz the pressure inside the ball should be very high,,,

[emikochan13]

@BinaryEggRoll That line of logic would explain the expansion of the universe, maybe "nothing" is what surrounds the universe.

[suburiboy]

YES.



[cul10043601]

Put a golf ball in it

[lexichronicle2]

"two copies of the God Delusion by Richard Dawkins."

Richard Dawkins, and his ardent followers, are fools if they think what they're saying is in anyway new, or going to significantly change anything. One has to be an absurdly arrogant individual to equally claim they know so well that God does not exist that they can claim it to be preposterous, based on a few decades worth of physics explaining the entire nature of existence. The worst thing for science is atheism; it too is dogmatic faith.

[lexichronicle2]

In the quest of vacuums, I decided to compare some common items to a rotary. 1 ATM, about 1000mBar. Dyson hoover, about 800mBar. My sucking on the gauge 200mBar. A 100ml syringe, one pull of the plunger, about 100mBar. Fridge compressor, 100 - 10mBar, great for boiling solvents in chemistry. Rotaries are around 1 to 0.001mBar.

[gmtbrs]

Actually most of the "pulverizing" seemed to come from the plastic cap, but eh.. Whatcha gonna do.

[tiger55331]

@comface

Ah yeah, thanks XD

[comface]

@tiger55331 If you pause at 0:58 you can see (on the bookshelf behind Phillip) two copies of the God Delusion by Richard Dawkins.

[tiger55331]

@comface

Sorry, can you explain?

[CRISNCHIPS12398]

760mmHg = 1atm = 101325Pa

[lopdebif]

Thanks for posting these videos. Knowing how things work is very important to me, and to our future!

[ipwnhack]

I just want to see you shoot stuff. Stop talking.

[snKwQw]

YES! .. Sorry.

[TheKillerCookieXD]

5:14 you can see a glass on wine :))

[bandersentv]

@nonindividual It's on the bookself about 10 books from the left. Look for the black book with Richard Dawkins in white letters.

[BurtonRGA7]

this video kind of reminds me of this one watch?v=P3ALwKeSEYs XD