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How the diving masks work?

Author:Yonsub Date:2013-10-10 18:46:22

Diving Mask is the observation window of the underwater world, in order to balance the pressure of the middle ear , which is charged with the nose together.
To select a wide field of vision mirror, crony wide edges smooth, can tightly attached face  , the right size.
diving Masks are divers in the water window, Since water is heavier than air, the human eye can not directly focus on the water, so divers must wear a mask, keep the air in the front of the eye cavity ,so divers in the water can only be normal viewing.

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