The shape of the yin and yang sections of the symbol, actually gives you a sense of the continual movement of these two energies, yin to yang and yang to yin, causing everything to happen: just as things expand and contract, and temperature changes from hot to cold.
Sound is measured in units called decibels. Sounds of less than 75 decibels, even after long exposure, are unlikely to cause hearing loss. However, long or repeated exposure to sounds at or above 85 decibels can cause hearing loss. The louder the sound, the shorter the amount of time it takes for NIHL to happen.
Each type of hearing loss may have several different causes. Exposure to loud noise is a common cause of both hearing loss and tinnitus. Infections are also a common cause, as are birth defects, genetics and reaction to drugs, especially chemotherapy or drugs used for cancer treatment. Here are the different causes of each type of hearing loss. Causes of sensorineural hearing loss: 1  Aging.  Injury.