Speculum metal (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Speculum metal" in English language version.

refsWebsite

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3books.google.com

3^rd place

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1web.archive.org

1^st place

1^st place

1sciencemuseum.org.uk

9,230^th place

7,258^th place

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6^th place

1chestofbooks.com

low place

low place

18^th place

17^th place

1cybrations.com

low place

low place

archive.org

Robert Chambers; Thomas Thomson (1875). A Biographical Dictionary of Eminent Scotsmen. p. 175.

books.google.com

Joseph Needham; Gwei-djen Lu (1974). Science and Civilisation in China: Magisteries of Gold and Immortality. Chemistry and chemical technology. Spagyrical discovery and invention. Vol. 5. Cambridge University Press. p. 238. ISBN 978-0-521-08571-7.
The Journal of the Anthropological Institute of Great Britain and Ireland. Vol. 64. Anthropological Institute of Great Britain and Ireland. 1934. p. 71.
Henry C. King (2003). The History of the Telescope. Courier Corporation. p. 74. ISBN 978-0-486-43265-6.

chestofbooks.com

Norman W. Henley et al: Speculum Metal.

cybrations.com

Voyage through the universe: The Visible Universe. Time-Life Books, 1990. (Web clip).

harvard.edu

articles.adsabs.harvard.edu

Edison Pettit: The Reflector. Astronomical Society of the Pacific Leaflets. Vol. 7, No. 331, pp. 249–256. December 1956.

sciencemuseum.org.uk

"Original mirror for William Herschel's forty-foot telescope, 1785". Science Museum. Archived from the original on 2009-09-02. Retrieved 2008-11-23.

web.archive.org

"Original mirror for William Herschel's forty-foot telescope, 1785". Science Museum. Archived from the original on 2009-09-02. Retrieved 2008-11-23.