| Show how flow lied lot Is the red 10 lo hot I 1 t sun sull A con amount piloun t of labor tins has been devoted during recon recent t years to form 1 arin soma reliable estimate a in 4 to the temperature of the radiant of the gunthe investigation however liott everli ld ai 81 subtle and d effic u it th thai it no absolute conclusions have yet been ta ved at I 1 in n regard to I 1 t sir isa isiac re newton thought that the heat of athe the tun bun was at least 2000 times time s greater 0 than the he temperature afred of red h hot e t iron let calculated that th the e bolar 1 la heat beat whirl rails on a square c centimeter e n nearly a seventh part org of n square are inch of the terrestrial surface is sufficient to raise grams nearly a troy iroy pennyweight penny felcht or of water wal crone one of centigrade every minute nud aud havill havi ul adopted this as AI what tie hu termed a Ilca calorie lorle 01 or constant un unit it of holstr heat he e in antt g backward inferred if that b t the heat a similar measure on art the surface of the sun gun would there servo io 16 melt a layer of at ice fee 1180 11 80 ISH 38 36 feet 1 loch inch thick every minute Poul let liet spoke ofa of a te temperature m pera ture somewhere between 2 2639 de degrees greeba aud degrees fit hron ri halt us its thear abe ob able amount of the heat of the en up p assumed the enormous y I 1 higher quantity of ct 1 ow degress fahrenheit prof to ailey from observations mado made with his bis recently constructed open ter orray or ray measurer a very sensitive in which cl calorific lorifice lori fic vibrations tire are converted into electric currents gives is aa a probably exact result from 1800 degrees to 2000 centigrade find by a very beautiful er ten foil of experiments afan 01 an altage thor in bothe independent lent satisfies him belt that the suns hemisphere radiates 87 times as ai much heat and times its aa much light na its an equal e aw area of incandescent steel la in a bessemer converter in which this th air blast has been sustained for about twenty minutes |
