Interference measurements of wave lengths in the iron spectrum (2851-3701) with notes on comparisons of lengths of light waves by interference methods, and some wave lengths in the spectrum of neon gas
Book details
- Title
- Interference measurements of wave lengths in the iron spectrum (2851-3701) with notes on comparisons of lengths of light waves by interference methods, and some wave lengths in the spectrum of neon gas
- Publication year listed
- 1915
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
Interference measurements of wave lengths in the iron spectrum (2851-3701) with notes on comparisons of lengths of light waves by interference methods, and some wave lengths in the spectrum of neon gas
Year: 1915
Between the limits lambda 2851 and lambda 3701, 131 wave-lengths have been measured in conformity with the recommendations of the International Wave-length Committee. Where it was found possible faint lines as well as strong ones were measured. Throughout the greater part of the region lambda 2987 to lambda 3701 lines were measured at intervals of 10 A . units or less. The spectroscope used was a 2-ft. grating, mounted in parallel light, and the etalon was 3.75 mm. Thick. The method was that of Buisson and Fabry. The mean difference between the present observations and the I. A . standards is one part in two million; the