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The effect of a sulphur bridge on the photochromic properties of indeno-fused naphthopyrans

✍ Scribed by Paulo J Coelho; Maria A Salvador; M.Manuel Oliveira; Luis M Carvalho

Book ID
108282503
Publisher
Elsevier Science
Year
2004
Tongue
French
Weight
240 KB
Volume
60
Category
Article
ISSN
0040-4020

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Properties of fused polysulphides—III. EMF measurements on the sodium-sulphur cell, and sulphur activities and constitution in fused sodium polysulphides
✍ B. Cleaver; A.J. Davies 📂 Article 📅 1973 🏛 Elsevier Science 🌐 English ⚖ 624 KB

Expressions are derived for the emf of the sodium-sulphur cell in the fully charged state (Et) and in a partly discharged state (El). It is shown that (& -El) is related to the variation of sulphur activity with the composition of the sodium polysulphide melt produced in the cell reaction, and that