Show X X X X X X X x X X X X X mouth kept open to protect ear drums that an explosion way may result in serious injury to the human ears eara Is a well fact gu gunners auers often open their mouths to protect their ear car drums while tiring aring large guns says a writer in the pathfinder magazine when the mouth Is open the air waves set in motion by the discharge 01 of f the gun gull enter the throat as well as the larz lara consequently the sudden pressure against the outside of tile the drums Is counteracted by nn an equal pressure against the inside such however Is not the practice to in the tha united states stater navy mon bien working in the turrets are well weil protected from concussion those i in the more exposed positions usually use pled gets of cotton in their ears to protect the drums some use iise patent wr ear stoppers such as are manufactured by various commercial firms although special ear protectors and cotton are also used at the coast artillery target practices it la Is a custom for the personnel taking part to open their mou mouths ilia during the actual firing of tile the guns to in order that the pressure on the ear drums may be equalized the men a also ise stand on their toes to relieve tile the body as much as possible of the of the explosion |