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Page 372
One need no longer carry a necktie to the window to ascertain its color by day . light . D ID you ever try to make day- light at night ? It's very simple . All you need are two color screens and a strong incandescent light .
One need no longer carry a necktie to the window to ascertain its color by day . light . D ID you ever try to make day- light at night ? It's very simple . All you need are two color screens and a strong incandescent light .
Page 731
TAKING THE HEAT OUT OF LIGHT DETAIL OF A WELSBACH MAN- TLE DAYLIGHT PRODUCER A SEARCH LIGHT THAT NEVER GETS HOT It can be. A PROJECTION LANTERN FOR MICRO SCOPIC SLIDES MADE POSSIBLE BY M. DUSSAUD'S COLD LIGHT been too much and the toll ...
TAKING THE HEAT OUT OF LIGHT DETAIL OF A WELSBACH MAN- TLE DAYLIGHT PRODUCER A SEARCH LIGHT THAT NEVER GETS HOT It can be. A PROJECTION LANTERN FOR MICRO SCOPIC SLIDES MADE POSSIBLE BY M. DUSSAUD'S COLD LIGHT been too much and the toll ...
Page 732
A SEARCH LIGHT THAT NEVER GETS HOT It can be used in place of flash lights in photography . ... Because of its greenish tinge , this light cannot be used where color values are concerned , but for industrial purposes , in work shops and ...
A SEARCH LIGHT THAT NEVER GETS HOT It can be used in place of flash lights in photography . ... Because of its greenish tinge , this light cannot be used where color values are concerned , but for industrial purposes , in work shops and ...
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