This spectrometer produced a high dispersion by passing light through the lower part of four tall equilateral prisms, through a totally reflecting prism, and back through the upper part of the prisms. It was probably made to order (for whom we do not know), and was probably fairly expensive. The “John Browning 63 Strand, London” inscription on the horizontal circle refers to the first important English spectroscope maker. Browning was at this address from 1872 to around 1900.

Browning advertised this as a “Large Model Spectroscope, for the use of Physicists,” noting that it cost over ₤38, and was similar to the one he had made for John Peter Gassiot, a prominent fellow of the Royal Society of London.

Ref: John Browning, How to Work with the Spectroscope (London, 1878), p. 57.

Date Made: 1872-1900

Maker: Browning, John

Location: Currently not on view

Place Made: United Kingdom: England, London

Subject: Science & Scientific Instruments

See more items in: Medicine and Science: Physical Sciences, Science & Mathematics, Optics


Exhibition Location:

Data Source: National Museum of American History

Id Number: PH.318374Catalog Number: 318374Accession Number: 234201

Object Name: spectrometer

Measurements: overall: 14 in; 35.56 cmaperture, telescope: 1 1/2 in; 3.81 cmaperture, collimators: 1 1/2 in; 3.81 cmfocal length: 18 in; 45.72 cm

Guid: http://n2t.net/ark:/65665/ng49ca746ae-71dd-704b-e053-15f76fa0b4fa

Record Id: nmah_1167077

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