Showing 8 results

The letter discusses about the diagram on the article on Monthly Notices does not take account of the shift of the lines at the centre of the Sun's disc, but only the relative shifts between centre and limb.

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

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.

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.

This letter discusses on the predicted formula about the shifts of the solar lines in agreement with the observed values at the red end of the spectrum.

This letter was to replying Dr.M. K. Vainu Bappu for telling the improvements required in the spectra for H & K emission.

The item was about the original glass plate that recorded the "Evershed Effect" in 1909.

This item concerns about the rare white light flare recorded in hydrogen alpha at Kodaikanal Observatory. These observations were taken on photographic films or plates and digitized for scientific research purposes.