## Abstract Fluorescent lighting screened with 26–0z. clear glass has been found not to interfere with the artificial production of rickets in chicks for assay of vitamin D~3~. There are indications that fluorescent lighting at intensities over 100 ft.‐candles may have a detrimental effect on chic
✦ LIBER ✦
Lighting in photographic laboratories
✍ Scribed by É. G. Chikirdin; L. A. Maslov; O. I. Belyaeva
- Publisher
- Springer US
- Year
- 1969
- Tongue
- English
- Weight
- 174 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0006-3398
No coin nor oath required. For personal study only.
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was steamed up and run for the first time January 3, 1886, the driving wheels being prevented from touching the track. The following day, the locomotive was run upon the track. On Friday, April 16, 1886, the first train, consisting of engine, tender and passenger car, the latter over fifty feet in