𝔖 Bobbio Scriptorium
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Preparation of calcium sulphide phosphorescing with different colors

✍ Scribed by W.H.G.


Book ID
103089715
Publisher
Elsevier Science
Year
1887
Tongue
English
Weight
64 KB
Volume
123
Category
Article
ISSN
0016-0032

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Growth and decay of phosphorescence in c
✍ Peter J. Mulder πŸ“‚ Article πŸ“… 1938 πŸ› Elsevier Science 🌐 English βš– 598 KB

The phosphorescence of the calcium sulphide was excited by light and the intensity of the combined radiation of all stimulated wave-lengths was measured as a function of time by means of photoelectric cell, the current from which was amplified by a special vacuum tube amplifier . The amplified curre