A diving mask (also dive mask or scuba mask) is an item of diving equipment that allows scuba divers, free-divers, and snorkelers to see clearly underwater. When the human eye is in direct contact with water as opposed to air, its normal environment, light entering the eye is refracted by a different angle and the eye is unable to focus the light. By providing an air space in front of the eyes, light enters normally and the eye is able to focus correctly.
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Famous quotes containing the words diving and/or mask:
“all the fine
Points of diving feet together toes pointed hands shaped right
To insert her into water like a needle”
—James Dickey (b. 1923)
“But today I set the bed afire
and smoke is filling the room,
it is getting hot enough for the walls to melt,
and the icebox, a gluey white tooth.
I have on a mask in order to write my last words,
and they are just for you....”
—Anne Sexton (1928–1974)