Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 290
theaters have often been established in rooms originallyintended for stores and their equipment has been of the poorestcharacter. This condition is now somewhat improved as the dangerhas become more generally recognized and has been made the sub- 257 134 UNDERWRITERS REQUIREMENTS ject of special… … Fig. 133. Showing Fire in Moving Picture Lantern Housing Due toInadequate Precautions in the use of the arc lamp projection machines with the highly in-flammable films on which the pictures are printed. These films 25a UNDERWRITERS REQUIREMENTS 135 are of cellulose coated with a chemical which…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
