Some thoughts on sound...
I was thinking about the fact that there's no sound in space, as there's no medium (air) for it to pass through. Which led me to ask what it was that produced the sound in the first place - and my answer was 'movement'. Can anyone confirm this...?
So a moving body imparts a bunch of energy onto it's surrounding environment, part of which is sound. Now, say a space craft imparts 100 units of energy, 10 units of which are sound (as the craft goes through the atmosphere and into orbit), and the other 90 units as whatever.
So the craft is in space now (free from the earths atmosphere), I would expect it would still impart 100 units of energy to the imediate environment. But it obviously isn't going to be sound... I thought initially it could be heat, but there's nothing to conduct it too...
So where does the energy go?
Does the craft itself absorb it in some way?
Does it even produce the energy...?
Turbofan
P.S. Amazing the things you think of when you're trying to get to sleep...