Evening Republican, Volume 18, Number 65, Rensselaer, Jasper County, 17 March 1914 — PHOTOGRAPHING THE BULLETS [ARTICLE]

PHOTOGRAPHING THE BULLETS

' If « photograph of a speeding bullet could be taken the print would problably show a space like a body of Water marked by what looked like (speeding water bags, each having a trlpple In Its wake. Photographs of [projectiles have been snapped In time «f peace, bat It is doubtful If the camera ever caught one as It sped on Its mission of death. A bullet speeding at the rate of 3.000 feet a second,

which Is more than 2,000 miles an hour, makes a great disturbance In the atmosphere and creates air waves which, of course, are Invisible to the naked eye. If you draw a stick through the water it causes little eddies and waves to trail behind It.- The faster you draw the stick the more waves and the wider the angle will it leave. The slows* the stick is drawn the fewer

the waves. Just so the bullet, remarks the New York Sun. If it is traveling slowly no waves can >be photographed, as apparently there are none. ■ Photographs of a bullet t going at a rate of speed lesß than 1,200 feet a second show no air waves at all. This is an interesting scientific discovery. But anything cutting through the ah at a greater rate than this disturbs the atmosphere to such great extent! that air waves are formed and can be photographed.