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Johnson, Manuel John, 1805 - 1859 (astronomer)

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Papers on magnetism and photography, 1855 - 1861

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Reference Code: GBR/0180/RGO 6/678
Scope and Contents Correspondence and papers concerning instructions, magnetic instruments and photographic techniques. The papers include J. Glaisher's report to the Astronomer Royal on examining the magnetic instruments at the Greenwich Observatory; adjustments to vertical force magnets and compasses; sketches of new mountings for dipping needles; discrepancies of dip; alterations of instruments; trials of dipping needles; papers by J.V. Lamont on the form of magnets (one in English, one in German) and...
Dates: 1855 - 1861
Conditions Governing Access: From the Management Group: Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).

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  • Subject: Magnetism X