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Welcome to Science Fiction - where we take science fact... | 0:15:05 | 0:15:09 | |
-And blow it to flippin' smithereens. -HE LAUGHS | 0:15:09 | 0:15:13 | |
Today's question, please, BUD E. | 0:15:13 | 0:15:16 | |
Just accessing me RAM chip, love. Give us a moment. | 0:15:16 | 0:15:19 | |
Today's question comes from Marvin in Dungarvan. | 0:15:19 | 0:15:25 | |
That's a good one. We'll have a craic with this. | 0:15:25 | 0:15:28 | |
-When you audibly pass wind... -Yeah, or fart. | 0:15:28 | 0:15:31 | |
When you audibly pass wind | 0:15:31 | 0:15:33 | |
the vibrations in the air create a sound wave, which travels outwards. | 0:15:33 | 0:15:38 | |
When vibrations are low, you hear a low pitch. | 0:15:38 | 0:15:41 | |
-HE FARTS -When they're fast, the pitch's high! | 0:15:41 | 0:15:45 | |
Sound behaves differently, depending on the material and atmosphere. | 0:15:45 | 0:15:49 | |
Allow me to demonstrate, and remember, do not try this at home. | 0:15:49 | 0:15:54 | |
Step one - eat ten cans of beans. | 0:15:54 | 0:15:57 | |
Step two - wait for half-an-hour. | 0:15:57 | 0:15:59 | |
Step three - now begin the flatulence test. | 0:15:59 | 0:16:03 | |
Notice how the sound changes when the professor is in open air, | 0:16:03 | 0:16:07 | |
underwater...and in space. | 0:16:07 | 0:16:10 | |
-Because space is a vacuum... -Like almost totally empty, like. | 0:16:10 | 0:16:14 | |
..we can't hear the sound. | 0:16:14 | 0:16:16 | |
Oh, but you can still smell it. Oh, no! | 0:16:16 | 0:16:19 | |
So now you know, Marvin, you can't hear a fart in space. | 0:16:19 | 0:16:23 | |
That's just a load of old science fiction, huh? | 0:16:23 | 0:16:27 | |
I'm better off at a window? Whoa, what a whack! Rank! | 0:16:30 | 0:16:34 | |
SHE COUGHS | 0:16:34 | 0:16:37 |