0 Members and 1 Guest are viewing this topic.
Hi Neil You have posted similar threads on TNS recently. http://www.thenakedscientists.com/forum/index.php?topic=16642.0http://www.thenakedscientists.com/forum/index.php?topic=12241.0This thread from 24/08/08 is very similar in it's topic/theme to this one asking about: What Would Happen To My Ear If Left Indefinitely In Water ?http://www.thenakedscientists.com/forum/index.php?topic=16642.0Yes hearing is amplified underwater because the normal gravity is amplified.
I would think the water puts pressure on the eardrum and perhaps stops the sound from bouncing off the drum as easily as it would normally without water causing less vibration in the ear and muffling the sound instead.. that doesn't mean it doesn't travel fast through the water.. but perhaps the water barricades the drum some..Just a guess.. lets see if I am anywhere near close the answer.. LOL
I was assuming you meant if your ear was under water and completely submerged,when the sound was being made.. Is that what you meant? Or did you mean with your ear out would you hear the noise louder because the noise was traveling through the water?
then why is it more difficult for Hoppy (my ear...Stop Hoppy Stop !) to hear underwater ?..ie: it's loud but not clear
Quote from: neilep on 09/10/2008 11:35:09then why is it more difficult for Hoppy (my ear...Stop Hoppy Stop !) to hear underwater ?..ie: it's loud but not clear Underwater sound is "not clear" because frequency dependent attenuation causes high frequency sounds to be absorbed much more than the low frequency sounds.http://en.wikipedia.org/wiki/Attenuation
Are both your ears mounted at that rakish angle? What caused it - childhood encounter with railings? Were the fire brigade really that rough? 
Your ears are specially developed to extract the very last bit of energy from the sound that you hear in air. This is achieved by 'matching' the impedance of the air (a very low density medium) to the medium in your cochlea which is more dense. Basically, the air is a low impedance medium - it carries the energy in waves with lowish pressure vibrations and relatively great movement of the particles. In a liquid, the same energy level consists of larger pressure variations and much less movement (it is pretty much incompressible). The drum starts the process and the tiny bones (ossicles) act like levers to achieve the matching, reducing the movement and increasing the force.If your ear is under water the medium has high impedance and the ear's mechanism only serves to reduce the movement even further. You would be better off without all that Nature's Technology!From memory, I think I have 'heard' sounds through the base of my neck rather than through my ears. Well, it felt like it.btw, Ignore the ribald remarks. Even the dung beetle's mother thinks it is beautiful.
Thanks to Everybody for their helpful and insightful answers !
From memory, I think I have 'heard' sounds through the base of my neck rather than through my ears.
QuoteThanks to Everybody for their helpful and insightful answers !I thought they were inhearingfull answers, actually.
Neil this is what the DUNG BEETLE use for their dens and foodas this YouTube clip shows: (YUK)http://uk.youtube.com/watch?v=I1RHmSm36aEhttp://en.wikipedia.org/wiki/Dung_beetle
Beethoven was becoming deaf he would compose at the piano