Saturday, January 14, 2012

How do we hear the sea/ocean in shells when you put them yo your ear?

What's the science behind putting a shell to your ear and hearing the ocean/sea

How do we hear the sea/ocean in shells when you put them yo your ear?
Apparently what you hear as the sea/ocean is actually the sound of blood pulsating in your ear.



The shape of the shells... some shells are better than others in capturing the very faint sound produced by the blood flow, and by the echo effect, is bounced back into your ear canal, hence you hear it.



Simple acoustics. It's not the sea out there, it's the blood in there. This would also explain the sound of the "sea" if you try listening to the shell in a house, miles away from the sea.



The association with the sea? the shells are normally found on the beach, and hence.
Reply:What happens is very low sounds in the room, which you might not normally hear, echo inside the shell and intensify to an audible level above what you would normally hear them as. This can be proven if you can get in a very quite place (sound proof room is ideal, but you might could do it in your car if it is quite enough outside) and try listening in the shell... you want hear anything.
Reply:no it just in your head my mum used to have some in her bath room.
Reply:hey last time i did that,i ended up with a hermit crab lodged in my ear hole..couldn't hear a thing for weeks.
Reply:You don't. What you're really hearing is the ambient noise from around you being captured in the shell and resonating.



http://science.howstuffworks.com/questio...
Reply:You don't hear the sea/ocean.



You hear a sound that you approximate to be the sea because of the 'rushing' sound.



The shell (conch) is shaped in such a way as to amplify sounds. What you are actually hearing is the sound of the blood passing through your carotid arteries as they take the blood up to your brain. Sometimes when it is really quiet and you have just exerted yourself, you can hear this effect without the shell. You can cup your hand over your ear to get a similar effect - but only when it's really quiet.
Reply:You don't.



What you hear is a combination of the sounds around you and the blood in your blood vessels echoing around inside the shell.
Reply:You hear your blood circulating.

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