The letter discusses on the H and K wave-lengths and discusses the recent results that confirm the earlier results, exactly in the case of H and with a difference of 001 with K.
Evershed, JohnSolar physics
59 Archival description results for Solar physics
This letter was a reply to the letter discussing definite periodicity in sunspot activity in the mean period being 11.12 years.
Evershed, JohnThe letter was a critisism by Evershed on the assumption of radial outflow of gases with a velocity increasing with heigh above the photosphere, combined with a constant relativity effect.
Evershed, JohnThis letter was with reference to the telegram where mean areas giving better gauge of prominence activity than mean extent are discussed. It also encloses a table of mean areas from 1890 to 1921.
Evershed, JohnThe letter was a confirmation of forwading a box containing 15 Sun charts which have been modified with the details of charts structure and required numbers of prints for each charts annually.
Evershed, JohnThe 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.
Evershed, JohnThis 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, JohnThis letter was reply to letter D.O.No.2492 of 26th March 1923 mentioning that nothing very striking to send you in prominences. He sent copy of one of the best plates and 2 disc plates in K light to show rotation.
Evershed, JohnThis letter was a discussion regarding displacements of the solar lines towards red are distinctly unfavourable to Einsteins theory.
Evershed, JohnThis letter is a reply regarding the sun's entry into Aries from the Director of Kodaikanal and Madras Observatories to Pirojshaw H Daste. He states that the sun does not enter the constellation of Aries on March 21; it is called the sign of Aries on or about the date, and this entry coincides with the spring equinox. The date of entry into the constellation Aries slowly changes.
Daste, Pirojshaw H.