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History

The history of spectroscopy began with Isaac Newton's optics experiments (1666–1672). According to Andrew Fraknoi and David Morrison, "In 1672, in the first paper that he submitted to the Royal Society, Isaac Newton described an experiment in which he permitted sunlight to pass through a small hole and then through a prism. Newton found that sunlight, which looks white to us, is actually made up of a mixture of all the colors of the rainbow." Newton applied the word "spectrum" to describe the rainbow of colors that combine to form white light and that are revealed when the white light is passed through a prism. Fraknoi and Morrison state that "In 1802, William Hyde Wollaston built an improved spectrometer that included a lens to focus the Sun's spectrum on a screen. Upon use, Wollaston realized that the colors were not spread uniformly, but instead had missing patches of colors, which appeared as dark bands in the spectrum." During the early 1800s,...
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17)All-woman BSF bikers create record with Republic Day iniciación; Twitterati beam with pride

India Republic Day -- To indicate Indias 69th Republic Day a grand parade was held from Rajpath in New Delhi like every year after Best Minister Narendra Modi given homage to the nations martyrs by laying a wreath at Amar Jawan Jyoti. But this time around the race fans were in for a splendid big surprise when a newly-formed Border Safety Forces Womens Motor Cycle staff Seema Bhawani made a spectacular debut with their daredevil stunts at the parade. Led through Sub-Inspector Stanzin Noryang the squad performed breathtaking stunts for the audience including a salute to the President! Out of the of sixteen stunts an d acrobatics fish riding side riding faulaad prachand baalay shaktiman bull fighting sapt rishi seema prahari bharat ke mustaid prahari sarhad ke nigheban and flag march pyramid were the highlights. Using 113 women the Seema Bhawani made a phenomenal obtain on 26 350cc Supérieur Enfield motorcycles. While the target audience cheered for them and even presented them a sta...
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