Mostrando 1780 resultados

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.

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.

This letter contains information about testing of the 15 inch lens on stars etc and finding something wrong in color correction.

The letter was a request to send weekly note to Calcutta containing meteorological determination from the wireless signal in the same form as Calcutta wires to the meteorological department, Madras.

The letter was regarding the Sun charts prints that are not satisfactory as the negatives are imperfect. Therefore sending of original charts on cloth which are 26 inches in diameter are proposed by Evershed.

The letter was mentioning about enclosed letter from the Director of the Kodaikanal Observatory regarding the disposal of the Photoheliograph on loan from Greenwitch Observatory

This a letter of enquiry regarding sending of lenses located at Nizamiah Observatory could be sent to Evershed. It also encloses a copy of Pocock's letter where description about the lenses are mentioned.

This letter was asking a question on results obtained by John Evershed in connection with the displacements of the spectral lines of the Sun towards the red as suggested by Einstein's theory.

This letter was a discussion regarding displacements of the solar lines towards red are distinctly unfavourable to Einsteins theory.

This letter was a request regarding the present state of knowledge about the periodocity of sun spot activity.