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On Leslie's photometer : and its application to determine the relative intensity of the sun's rays and the illuminating powers of coal and oil gas / by William Ritchie ; communicated by the author.
Van Pelt Library Microfiche 960
Mixed Availability
- Format:
- Microformat
- Author/Creator:
- Ritchie, William, 1790-1837.
- Language:
- English
- Subjects (All):
- Photometry.
- Geometrical optics.
- Light meters.
- Physical Description:
- pages 321-325 ; 22 cm
- 6x9 in.
- monochrome
- service copy
- positive
- Place of Publication:
- Edinburgh : William Blackwood ; London : T. Cadell, 1825.
- Notes:
- Microopaque. New York : Readex Microprint, 1977. 1 microopaque ; 23 x 15 cm. (Landmarks II)
- In Edinburgh journal of science, v. 2 (1825), p. 321-325.
- OCLC:
- 9688595
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