A VERY thorough study of the spark spectrum of sulphur was made by Eder and Valenta in 1904 in the region λ3301 to λ5819. In 1907, Sir Norman Lockyer showed that some of the stronger lines of S + ...
Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character, Vol. 233 (1934), pp. 303-326 (26 pages) ...
IN the above paper Profs. Runge and Paschen have extended their important investigations to the spectra of oxygen, sulphur and selenium, and have discovered in the low temperature spectra of these ...
Two astrophysicists have finally solved a 20-year-old astrophysical puzzle concerning the lower-than-expected amounts of the element sulphur found in Planetary Nebulae (PNe) in comparison to ...
A now iconic collage from our group showing 22 individual well-known PNe, artistically arranged in a spiral pattern by order of approximate physical size. The largest PNe have a surface brightness ...
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