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Earmuffs that are also hearing protection. Earmuffs refer to two different items. Both items consist of a thermoplastic or metal head-band that fits over the top or back of the head, and a cushion or cup at each end to usually cover both ears. The cups can either be clothing accessories designed to cover a person's ears for warmth or personal ...
Chester Greenwood. Chester Greenwood (4 December 1858 – 5 July 1937) was an American engineer and inventor, known for inventing the earmuffs in 1873. [1] He reportedly came up with the idea while ice skating and he asked his grandmother to sew tufts of fur between loops of wire. [2] His patent was for improved ear protectors.
A hearing protection device, also known as a HPD, is an ear protection device worn in or over the ears while exposed to hazardous noise and provide hearing protection to help prevent noise-induced hearing loss. HPDs reduce the level of the noise entering the ear. HPDs can also protect against other effects of noise exposure such as tinnitus and ...
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Prognosis. Prevalence. Earwax, also known by the medical term cerumen, is a waxy substance secreted in the ear canal of humans and other mammals. Earwax can be many colors, including brown, orange, red, yellowish, and gray. Earwax protects the skin of the human ear canal, assists in cleaning and lubrication, and provides protection against ...
Earworm. An earworm or brainworm, [1] also described as sticky music or stuck song syndrome, [2] is a catchy or memorable piece of music or saying that continuously occupies a person's mind even after it is no longer being played or spoken about. [3][4] Involuntary Musical Imagery (INMI) is most common after earworms, [5][6][7][8][9] but INMI ...
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