Controversial BeliefsSome mugs still think the MMR injection gives children autism (it doesn't), while others are of the belief that we're ruled by billionaire lizard people. Tell us about views outside the mainstream which people go glassy eyed if you bang on about them (Your grandad's a racist - no need to tell us, thanks)
Suggested by Frample Thromwibbler
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Scaryduck LIKES EGG, Thu 25 Apr 2013, 12:06)
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The physics aren't that complexbut those aren't the physics. How can the crest collide with the trough? The whole point of a wave is that they are going at the same speed. Different waves may move at different speeds in some media, but that's dispersion, which is quite different from dissipation.
It's much simpler than that: friction between air molecules mean that as the sound wave propagates, it continually loses energy to heat and reduces in amplitude.
(, Thu 25 Apr 2013, 15:30, 1 reply)
When you see waves on a beach they all go in the same direction, roughly at right anglesto the coastline but when you look over the side of a ship at sea they're all going in different directions and colliding with each other at various angles.
Who straightens them up and at what distance from the beach does he do it?
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edjogs Collared doves are shit., Thu 25 Apr 2013, 15:41,
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My mate Alan works the coast between Morecambe and Fleetwood. I've gone with him on his rounds a couple times. We were a fair distance out when he was straightening the waves, about 10 miles or so I'd reckon.
HTH
(, Thu 25 Apr 2013, 16:02, closed)
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