Tagged Questions
4
votes
1answer
32 views
Is there a naturally occuring sound pressure level reference?
There are lots of devices that purport to measure the absolute value of sound pressure levels. Here is an example, here's another, there's also this iPhone App. Putting such devices side-by-side in ...
9
votes
3answers
202 views
Does sound propagate further in freezing weather?
A few days ago I went for a walk in the evening. We're having winter with a little snow and freezing temperatures. We're in a quiet, shallow valley with a train station about 1km from us. I heard a ...
3
votes
1answer
204 views
Why does the monitor make a cracking noise?
After switching off the monitor, there's a single crack after a while. I wonder where exactly it comes from.
I know that this is normal and not an indicator of being defect. This sound is also not ...
4
votes
1answer
492 views
The speed of sound is proportional to the square root of absolute temperature. What happens at extremely high temperatures?
The speed cannot increase unboundedly of course, so what happens?
