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Phikfophkal TranfaSidhs, for the Tear 1764.as that of falling bodies is actually foiihd to be. ~-This law of gravitation Mr. Murdoch aftume’s as given, and makes fHd nioon’s diftance the quantity fought.Thus writing F for the number of feet which a body falling from feft, defcribes, in vaeu‘5, at the equator in one fecond, ¥ for the verffed fine of fhe arc of the moon’s orbit defcribecl in the fame tiflffe, to the radius unity, D for the ieinidiamecer of the equator in feet, and the ratio of the diftance of the centres5i,e e^t^1 M moon, to the femidiameter of the earth, that of X to 1 : we have, by the general law, the moon’s fall in1 fecond, equal to ; but the fame fall is equal to VXDXXjin femidiameters of the equator =60.08906. And the arfclw riietical complement of the logarithm of the above number is the log. tang, of the mootfs mean horizontal parallax at the equator., which therefore is 57'. 12^^34.But as this diftance will be fomewhat increafed by the revo* Jutioii of the earth and moon found their common center of gravity, this able mathematician finds, by a very curious pro-cefs, the true diftance to be 60.5883 femidiamefers of the equator, and the moonVhorizontal parallax 56'. 44^, 07.XVti. XVIII. XIX. XX. XXL XXiV. XXV. XXVI. XXX. XXXI. XLV. Obfirvations on the eclipfe of the fun* thefirjl of Jprily 1.764, made in Surry-ftreet in the Strand* by James Short, ' M. A. * at the houje of Jofeph Salvador* Efifr by Dr. John-Be vis; ai Liverpool, by Mr.James Fergufon?; dt Brump-ton Park, by Mr. Samuel Dunn; at Flamftead koufe, by Mr. ProfefTor Blifs ; at Thorley-hall, by Matthew Rapfcr, at 5chovezinge near Heidelberg, by Chriftian Mayer ; at Chatham by Mr. Mungo Murray* and at /Ar Jefuit’s college in , Rome. 0As there is nothing yery particular in thefe obfervations* we have placed them under one article, and fhall refer thofe who are defirous of peruiing them, to the original, as an abridgement would be ufelefs. But muft obferve, that Dr- Bevis, Mr* Dunn, and Mr. Mayer, have alfo given in their papers, obfer-vations on the eclipfe of the moon, which happened on the17th of March, j 764.XXVII. A table of the places of the coput of 1764, difcovered at the obfeiyatory of the Marine at Paris, on the third of January^ about eight o'clock in the evenings in the confteHation of the Dragon, concluded from its Jituation obfefved with regard to theflart cft? Mbhjieur Charles Meffier.hia tattle contains fixteen places of the comet deducedFwhence X3==y^, andFV XD is the diftance fought0.3/rona
Newspaper Details
Monthly Review
London, Middlesex, GB
Sat, Mar 01, 1766
Page 66
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USA 13 Jul 2024
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