Synopses & Reviews
Synopsis
Excerpt from A Study of the Retardation of Combustion on Passing Thru Wire Screens Place in a Closed Pipe: A Thesis
The first person to employ the known phenomenon, that combustion will not pass thru the mesh of fine wire screens, was Sir Humphry Dewy. The Davy lamp consists essentially of a wire screen qylinder surrounding the flame of an ordinary miners lamp. The gas passes thru the meshes to suppky the flame but the flame does not flash out thru the meshes when in the presence of explosive mixtures of gas and air. The presence of this mixture is detected by the sputtering of the lamp. Close observation will show tiny flames just inside the screen but die out before passing thru the mesh. The cooling properties Of the wire screen cool the flame below the kindling point and hence dies. The limiting size of the openings and the size of wire have not been determined.
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