گوش چطورکارمیکند؟-زبان اصلی

You may license this video royalty free by contacting us at http://www.javitz3d.com Many of us take for granted a very extraordinary ogan... our ears. To understand the ear, we need to understand what sound is. The speakers 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 affects the pitch of the sound. The level of air pressure in each wave

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