Amazing Physics Videos
September 8, 2008 7:06 AM Subscribe
This is my favorite, but I dunno if that counts as physics or chemistry or what.
posted by GooseOnTheLoose at 7:53 AM on September 8, 2008 [5 favorites]
posted by GooseOnTheLoose at 7:53 AM on September 8, 2008 [5 favorites]
That Tesla coil is incredible. I was expecting a 808 to kick in halfway.
posted by swordfishtrombones at 8:23 AM on September 8, 2008
posted by swordfishtrombones at 8:23 AM on September 8, 2008
Why haven't giant Ruben's tubes become a mainstay of rock concert pyrotechnics? Someone is asleep at the switch.
posted by jedicus at 9:17 AM on September 8, 2008 [2 favorites]
posted by jedicus at 9:17 AM on September 8, 2008 [2 favorites]
Those are fantastic! How does the tesla coil soundwave one work? I don't get it...
The cornstarch (GooseOnTheLoose's link) is remarkable -- the end... creepy, almost.
posted by Pantengliopoli at 10:58 AM on September 8, 2008
The cornstarch (GooseOnTheLoose's link) is remarkable -- the end... creepy, almost.
posted by Pantengliopoli at 10:58 AM on September 8, 2008
I'd like to see slingshot girl on the list somewhere.
posted by Killick at 12:38 PM on September 8, 2008
posted by Killick at 12:38 PM on September 8, 2008
Make sure to note the credits to the rap song at #1.
posted by JHarris at 1:34 PM on September 8, 2008
posted by JHarris at 1:34 PM on September 8, 2008
Dugg!
posted by turgid dahlia at 2:44 PM on September 8, 2008
posted by turgid dahlia at 2:44 PM on September 8, 2008
I think this video exhibiting the properties of a non newtonian fluid is pretty rad.
posted by MaryDellamorte at 3:31 PM on September 8, 2008
posted by MaryDellamorte at 3:31 PM on September 8, 2008
Can someone explain to me...
This concerns the mythbusters helium/SFl6 inhalation bit. So speed of sound goes inversely as density, and causing the high voice with helium. But, everything I've read suggests that deep-sea divers (breathing a He and O mixture) have the same high-voice problem. Wouldn't their gas be under many atmospheres of pressure, and so have a high density, and so lead to a very low voice?
posted by alexei at 1:12 AM on September 9, 2008
This concerns the mythbusters helium/SFl6 inhalation bit. So speed of sound goes inversely as density, and causing the high voice with helium. But, everything I've read suggests that deep-sea divers (breathing a He and O mixture) have the same high-voice problem. Wouldn't their gas be under many atmospheres of pressure, and so have a high density, and so lead to a very low voice?
posted by alexei at 1:12 AM on September 9, 2008
The gas itself is still less dense than nitrogen (which is what it replaces), even at depth. See here:
Because the mass of helium gas is less than that of nitrogen gas the vocal cords vibrate at a higher rate in the voice box, this coupled with the higher speed of sound for helium results on a very high pitched voice when the diver breathes the helium oxygen gas mix.
Which also notes that hypothermia is a greater danger as well, since Helium conducts heat much better than Nitrogen...
posted by Pantengliopoli at 9:25 AM on September 9, 2008
Because the mass of helium gas is less than that of nitrogen gas the vocal cords vibrate at a higher rate in the voice box, this coupled with the higher speed of sound for helium results on a very high pitched voice when the diver breathes the helium oxygen gas mix.
Which also notes that hypothermia is a greater danger as well, since Helium conducts heat much better than Nitrogen...
posted by Pantengliopoli at 9:25 AM on September 9, 2008
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(Thanks, these are cool.)
posted by longsleeves at 7:29 AM on September 8, 2008