OCR Text |
Show Showing Flight of Insects. Moving pictures of the flight of insects in-sects have been made with exposures of 1-42,000 second. Another photographer photog-rapher has made a kinematographic study of the action of weapons and ; projectiles, employing for illumination electric sparks of a duration of one ten-millionth of a second, and obtain- ing pictures of 400 successive phases of the operation of the firing meehan- , ism of an automatic pistol, although the entire operation occupied only ! about one-tenth of a second. |