Instrument for imaging solar spectra on photographic plate. Also contains electric arc lamp which can be focused above solar spectra to allow for comparison.
Presently, I’ve been reading a lot of very old papers and books in astronomy. The work I’m currently reading a portion of, is from 1881, and is a summary of all the findings of the year in all fields of Science. For those that aren’t familiar with that time period in astronomy, the big thing was spectroscopy. It was only ~30 years earlier that chemists and astronomers had begun to work out methods by which to investigate spectra and with the newly developed tools in hand, astronomers were pointing them at anything they could find sufficiently bright to get a spectra. Obviously, this meant the first target was the Sun. This work provides an interesting snapshot at a developing era in astronomical history.
(…) Read the rest of Spectroscopy in 1881 (519 words)
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(C) jvois for Universe Today, 2010. | Permalink | 2 comments | Add to del.icio.us Post
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