saudipta c

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A verse from Rigveda (in Sanskrit) says "Yojanam Sahastra Dwe Dwe Shate Dwe Cha Yojana Aken Nimishardhena Krammana Namostutey" (1, 50-4), which in English stands "I salute Thee (Sunlight), who moves 2206 Yojana in half Nimish".

'Yojana' is well known in India & is equivalent to 4 'Kose', each 'Kose' measuring 8,000 yards or 8000 X 0.9144 metres.

'Nimish' is defined in the Hindu Sacred book, "Srimadbhagwat Gita"(111, 11-3 to 10), where 15 'nimish'es make 1 'kashta', 15 'kashta' make one 'laghu', 30 'laghu's make 1 'muhurta' and 30 'muhurtas' make one 'Diva-Ratri' (Day-Night). Day-Night is 24 hours. Hence a simple calculation converts the speed of sunlight as 3.00 X 10^8 m/s which is the speed of light in S.I.unit, correct upto two significant digits

Since Rigveda is one of the earliest of Vedic literatures that dates back to 1500-500 B.C., determination of speed of light with such accuracy is amazing and incredible, isn't it ?

I don't feel any problem. What may be the possible diagnosis ?

I have analysed TSH on the advice of my doctor because of a consitent low hemoglobin - around 7.

On oxidation each of the 2 aromatic compounds A & B of the same molecular wt 120 gives the same dibasic acid that on heating forms an anhydride. The compound A forms crystalline orange precipitate with 2,4 dinitrophenyl hydrazine. A on treatment with CH3MgBr, followed by dehydration and hydrogenation gives B. Identify A, B and give reactions.

2 small spheres each of mass m and charge q, lie inside a nonconducting smooth hemisphere of radius R. (1) Find q if the equilibrium separation between the charges is d (2) Compute the potential energy in this configuration.