International Library of Technology · Scranton, International Textbook Co. · leaf 375
t binding due to any slight irregularity in the carbon. Since the top of the glass and the lower surface of the plate are ground plane, little air can get in between them, and the only place where much air can enter the bulb is at the hole in the center of the top plate, through the small space… … Fig. 5. 8 ELECTRIC LIGHTING. § 18 eddies are formed by the hot air passing up, thus furthertending to keep out the cold air. The above is intended merely to illustrate the generalarrangement of the enclosed arc. The methods of holdingthe globe and the arrangement of the lower carbon holderdiffer in…
Electrical engineering
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.], 1902, leaf 375](https://img.insideoutlibrary.com/img/1024/ia-electricengineer03inte-375-236.webp)
