partially decomposes and which I have constructed, I succeeded recently in action of the undulating light is developed in the or- gives off oxygen; at 80 deg. to 100 deg. its decomposi- attaining very good results with a film speed of 20 tion is total. This body, which may be easily pre-… … scribes his experiments as follows: It is well known Fig. 4.—A PHOTOGRAPHIC SOUND-RECOED. that the peroxide of sodium, under the action of a small quantity of water, decomposes violently with disengagement of oxygen and leaves a residue of caus- iig. 1— THE FILM-CASING OPEN. of hydroxyl chemically…
Manufacturers · Seri · Automobile · Munn · Trade mark · Scientific American · Real estate · Motor carriage · Liquid fuel · Tific american · Gun deck · Sheet metal · West virginia · Composing machine
Internet Archive · Public domain (published before 1931). Free to use for anything.
