Talk:Vijaydurg Fort

Helium
Helium was discovered in Guntur on the other side of India and in London. The French discoverer is Janssen and not Johnson has written a detailed report. please read: he used a house in Guntoor owned by M. Jules Lafaucheur. Lockyer observed from there in 1898 ( to late for the discovery of helium which took part in 1868 please read: --Stone (talk) 20:17, 18 December 2010 (UTC)

Copy of the history section if helium
The first evidence of helium was observed on August 18, 1868 as a bright yellow line with a wavelength of 587.49 nanometers in the spectrum of the chromosphere of the Sun. The line was detected by French astronomer Jules Janssen during a total solar eclipse in Guntur, India. This line was initially assumed to be sodium. On October 20 of the same year, English astronomer Norman Lockyer observed a yellow line in the solar spectrum, which he named the D3 Fraunhofer line because it was near the known D1 and D2 lines of sodium.

Copy of the Discovery of Helium from the Vijaydurg Fort Helium

 * Sir Joseph Norman Lockyer, a British scientist was observing a solar eclipse from this fort on 18 August 1868. It was during his observation that the Helium Gas was discovered on Sun in the form of a yellow flame! He named this as Helios which was later named as Helium. Vijaydurg can be credited as the place from where, Helium was discovered and observed on sun.

Quote from Memorandum of the solar research carried on by Sir Norman Lockyer 1863-1906 by Lockyer
The grant was approved; but, in consequence of delays, the instrument did not reachme till October 1868, by which time I changed my residence from Wimbledon to 24 Fairfax Road, West Hampstead, where I had built and observatory, the 6 1/4-inch Cooke being still the instrument used. On October 20, 1868, I swa the bright lines, as I had anticipated in 1866.

Helium discovery for the Vijaydurg Fort article
Helium was discovered by two scientists independitly in 1868. French astronomer Jules Janssen observed helium emission lines on August 18, 1868 as a bright yellow line during a total solar eclipse in Guntur, India. On October 20 of the same year, English astronomer Norman Lockyer observed a yellow line in the solar spectrum. He took the observation in West Hampstead, United Kingdom. Norman Lockyer set up a observation post at the Vijaydurg Fort for the Solar eclipse of January 22, 1898. In his report he does not mention that he ever had been to the Fort before.

what to rewrite ? 103.102.30.20 (talk) 06:25, 11 September 2021 (UTC)