How the ear works

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 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 determine the direction of sound, and emphasize 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 mm wide.

Now that we received the sound, the middle ear transfers this energy.
The smallest bones in your body, the Malleus, Incus, and Stapes start in motion.

The Malleus is attached to the eardrum, and as the sound travels along the force is amplified by leverage until it arrives at the Stapes which acts like a reverse piston creating waves in the fluid of the inner ear.

The most significant increase in pressure is caused by pneumatic amplification. The face of the stapes has a surface area of 3.2 square mm, while the eardrum has a surface area of 55 square mm. Using this, along with leverage through the 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 hearing... the Cochlea. In reality, it is coiled up, but it is easyer to understand straightned out.

There are actually three chambers inside, but lets take a look at the central part.

The stapes is cuasing pressure waves to travel through the structure. Along the inside wall is about 20-30k reed like fibers. As the waves move along they encounter fibers with the correct resonant 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 hair cells. When the hair fibers resonate, they cause the hair cells to move, which then sends an electrical impulse to the cochlear nerve, and on to the brain. Certain pitches of sound will resonate in specific 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 happening in your head right now at full speed.

And not just one, but two of these sophisticated instruments are giving you the amazing sense of hearing. This is just one of the amazing systems found in the human body that go far beyond our humble human understanding.

[latikasharma]

Studied this many times but it amazes me everytime I re-study it!! Brilliant.

[BloobleBonker]

Wow! And then the brain interprets the raw signals into speech, music, birdsongs etc.. truly incredible.

[angelialvares]

The human body is nothing short of a miracle!

[AbdALLAH-]

قال الله تعالى:"وفي الارض آيات للموقنين ، وفي انفسكم افلا تبصرون " -الذاريات،الآية:21-20
"And on the earth are signs for the certain [in faith] ،
And in yourselves. Then will you not see? " -(51: 20،21)

[medteams]

الله سبحانه وتعالى يقول في القران الكريم (( يَا أَيُّهَا الْإِنْسَانُ مَا غَرَّكَ بِرَبِّكَ الْكَرِيمِ * الَّذِي خَلَقَكَ فَسَوَّاكَ فَعَدَلَكَ * فِي أَيِّ صُورَةٍ مَا شَاءَ رَكَّبَكَ ))

[mangoes]

Subhanallah, that cannot come from nowhere .this complicated system is a part of a bigger and more complicated system ; which is the human body, and also this human body is a part of a bigger, very complicated and very big yet hatmonical unit which is the universe, subhanallah

[konan]

(وَفِي أَنْفُسِكُمْ ۚ أَفَلَا تُبْصِرُونَ)
[Surat Adh-Dhariyat 21]
صدق الله العظيم

[roadstojannat]

Alhamdulillah(All praises are for Allahu Subhan wa taaala) for the favors.

[rahmahl]

SUBHANALLAH, THE CREATOR OF ALL THAT GREATNESS سبحان الله الخلّاق

[arsalanamin]

Indeed, Allah Almighty is THE BEST CREATOR.

[saifullahrahman]

just awesome, i think understanding these with these animations makes it much easier for us to understand, it creates an image in our brain which we can use to further understand it better

[johnfelipevalenciarodrigue]

This overwhelms my understanding. What a complex and precise system. There must be a greater and smarter creator that made this possible

[shane]

To call it amazing is truly an understatement yet there really isn’t a better word.

[arandomfish]

Lol I'm listening to this with my ears

[cosmicallyderived]

0:56 Hey guys, the outer rim of the ear drum does not move. It remains stationary, the other central part of the drum moves the most. It's literally like a drum, taut center and fixed on the edges. Look up a video of drums playing in slow motion to see what I'm talking about. Only the middle moves in a drum, and less and less so as you move radially outward till no motion at all on the outermost edge.

[adventuresondrz]

Only school makes me come to a video like this...

[erdemdogangun]

"Who is the owner of your eyes and ears, the most precious of your members? From which workbench or shop did you obtain them? It is only your Sustainer that could give you them. It is He Who creates and raises you, and gave you them. In which case, there is no Sustainer but He, and the only one fit to be worshipped is He."
Words - 429, by Said Nursi, (Qur'an, 10:31-2.)

[twreck]

Awesome video! Easy to follow animations and simple concise description. Thanks so much!

[RFFFF]

thank you so much!!! i studied this and passed a test with an A+!!!

[Exahax]

What a listener He must be who made us capable of listening.