The preparation of pure alloys
β Scribed by H.L.
- Book ID
- 104125208
- Publisher
- Elsevier Science
- Year
- 1924
- Tongue
- English
- Weight
- 50 KB
- Volume
- 198
- Category
- Article
- ISSN
- 0016-0032
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π SIMILAR VOLUMES
Feb., I923.] U.S. BUREAU OF STANDARD.q NOTES. ~57 electrical sensitivity in the extreme ultra-violet, but that the reaction gradually decreases with decrease in wave-length. Several spectral response curves are given of Case's barium and strontium photoelectric cells, which have maxima at o.4z~ and
Feb., t923.] U.S. BUREAU OF STaXDaRDS NOTI.ZS. ## 253 and to formulate a statement of the conditions under which the spherical aberrations of two thin lenses will compensate one another. This last is confined to the simplest case, in which the lenses are close together. The treatment is in part a