Madras (India)

Elements area

Taxonomy

Code

Scope note(s)

    Source note(s)

      Display note(s)

        Hierarchical terms

        Madras (India)

          Equivalent terms

          Madras (India)

            Associated terms

            Madras (India)

              815 Archival description results for Madras (India)

              815 results directly related Exclude narrower terms

              This letter was reply to letter dated Oct. 29 about lenses. He was requesting 15-inch, 12-inch, 4-inch and a lens of about 7 ft. focus lenses to be send from Nizamaiah Observatory to Kodaikanal Road Station mentioning the purposes for which it requires. In addition the item has the telegram messages written by Evershed to Pocock and vice versa.

              Evershed, John
              IND-IIA-F206-I05 · Item · 24-07-1922
              Part of Correspondence related to Nizamiah Observatory during 1917-1923

              This letter is from John Evershed to Mr Bhaskaran about the instructions to pack the 15-inch lens in a large case. He also mentioned that he had put castor oil between the component lenses to keep them perfectly adjusted and saved about 8 percent of light otherwise lost by reflection.

              Strange, W. L.

              This letter was an acknowledgement for sending pump and bell jar. Evershed mentioned about getting the beautiful series of plates of the Spectrum of the iron arc in air and the centre of Sun's disk. He has written about reproduction of prominence photos the sample of work done by the Roorkee Coy., is suitable the screen used being very fine.

              Evershed, John