Record

Collection	ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments
Object Name	Rowland solar spectrum photographs
Object Number	ABDNP:200706a
Brief Description	Set of 9 fabric backed rolls showing black and white photographs of the Normal Solar Spectrum made using a Rowlands grating. Writing on rolls showing wavelengths and origin.
Dimensions	length 910 mm, width 310 mm, thickness 1 mm
Materials	fabric, paper
Condition	good
Completeness	unknown
Maker	Prof. H. A. Rowland, Johns Hopkins University
Object Production Place	Johns Hopkins University
Object Production Date	1888-1890
Inscription Content	Photographic Map of the Normal Solar Spectrum, made with the Concave Grating by Prof. H. A. Rowland, Johns Hopkins University 2nd Series 1888
Caption	"Solar Spectrum. The section of the solar spectrum displayed here is one of the pioneering high resolution spectra made by Rowland (1885). It shows a very large number of absorbtion lines (Fraunhofer lines). The majority of the lines come from iron; others come from elements such as aluminium, calcium, nickel, magnesium etc." Fraser Noble Building - Historical display label.

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