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How our ears work.
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Added May 22, 2020
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A look inside the ear. Pretty cool.
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many of us take for granted a very extraordinary Oregon our ears do understand the year we need to understand what sound is the speaker's you are listening to right now are vibrating flexing in and out causing a wave of pressure through the air the frequency of these waves or the speed at which the sound creating surface moves back and forth affect the pitch of the sound the level of air pressure in each wave is directly related to how loud the sound is the outer part of our ear catches these waves it faces forward and has a specially-designed structure of Curves helping us to deter in the direction of the sound and also emphasized the frequencies used in human speech now that the sound waves are caught they travel through the ear canal and strike against our eardrum a thin membrane about 10 m wide now that we receive the sound the middle ear transfers this energy the smallest bones in your body the malleus incus and stapes he's starting motion the malleus is attached to the eardrum does the sound travels along the force is Amplified by leverage until it arrives at the Staples which acts like a reverse piston creating waves in the fluid of the inner ear the most significant increase in pressure is caused Define pneumatic amplification the face of the Stevens has a surface area of about 3.2 Square millimeters while the eardrum has a surface area of 55 Square millimeters using this along with leverage to malleus and incus the final pressure is 22 times greater than when the sound first arrived now we come to the most complicated part of the hearing there cochlea in reality it is filled up but it is easier to understand straightened out there are actually three chambers inside but let's take a look at the central part the Staples is causing pressure waves to travel through the structure along the inside wall is about to 30000 read like fibers as the waves Move Along they encounter fibers with the correct resident frequency and energy is released these fibers aren't actually what give us the signal that we heard something there is a special structure next to these fibers containing herself when the fibers resume they cause the hair cells to move which then sends electrical impulses to the cochlear nerve and on to the brain certain pitches of sound will resonate in epic locations and louder sounds will cause more hair cells to move our brain interprets all this raw data making it possible to enjoy things like music or an engaging conversation just to think that all of this is half in your head right now at full speed this is just one of the amazing systems found in the human body that go far beyond our humble human understanding
Uploaded by
Kenneth Dorman
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