API 5CT SMLS casing K55-N80

API 5CT SMLS casing K55-N80

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  • website:https://www.reliancemetalresource.com/
    Tianjin Reliance Steel Pipe Industry & Trade Co., Ltd. was officially founded in 2004, and is located in Caigongzhuang Industrial Area in Jinghai County, Tianjin, China. We are a joint-stock enterprise, with 3 branch plants.
    Our main products are:
    Welded Pipes, Square & Rectangular Hollow Section Tubes
    Galvanized Steel Welded Pipe and Pre-galvanized Steel Pipes.
    Tel:(86) 189-2030-3008
    Fax:(86) 022-23757190
    E-mail:admin@reliancesteel.cn
    Address:Hi-Tech information square, NanKai district of Tianjin.



    You may license this video royalty free by contacting us at https://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 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.

    The sales manager has a good English level and skilled professional knowledge, we have a good communication. He is a warm and cheerful man, we have a pleasant cooperation and we became very good friends in private.
    5 StarsBy Belle from Mexico - 2016.07.07 13:00
    Reasonable price, good attitude of consultation, finally we achieve a win-win situation,a happy cooperation!
    5 StarsBy Elva from Cambodia - 2016.08.28 16:02

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