Publisher's Synopsis
Excerpt from A Comparative Study of Plain and Frosted Lamps
These results of frosting may be classified under three general heads: (1) Change in Absorption; (2) Change in Distribution; (3) Change in Life.
In conjunction with the study of the change in distribution many observations were made on the mean spherical reduction factors of a number of types of filaments. In fact, owing to the importance of this question in its bearing on the commercial rating of incandescent lamps on a basis of mean spherical candlepower, much attention was given to this part of the investigation. The results will, therefore, be discussed in a separate section of the paper.
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