12 ಟ್ತಿಣ್ಣಿhe ೩ngphere, which,ekgwinter ... cold nights tend greatly to decrease. ... a. - Pöp. How much nearer is the eartoo. the sun during the winter than the summer Tut. In the month of December, it. istwo millions seven hundred and fifty-four thousand miles nearer than in the month of June. y - Pup. What benefit do we receive from the sun, besides its affording us light? Tul." By its warmth and heat it promotes vegetation, charishes animal life, and raises the vapours from the sea, without which we should have no rain. Pup. Of what nature or quality is light ? ... Tut. . It is an enlanation of rays from the sun, spreading themselves with inconceivable velocity through the ether. Light' is exceedingly fine and subtile ; it penetrates through glass, and is diffused over the whole world. o Pup. How long is light travelling from the sun to the earth 2
- Tut. About eight minutes. It travels nearly 12 millions of miles in a minute, or 2,00,000 in a second. Pup. How does it appear that the rays of the sun partake of the nature of fire? . . . . . . . .
Tou. When collected by a burning glass, they produqe effects similar to those produced by fire. - ... Pop. Isothere any thing more particular in these 會y rays?' o o -, * * Tut.” They are the cause of all the different co1:____? . . : نزة . في ار تية ...,,,·^ : 战* 等w 心* ;lónrs we ser . - " *. * ?44 :* :ಓ& , , ೩SSLSA:೭.'#': ೪೪೬೨:AK ## ## :' بيم : SeeS kt ttt ttS ttllllll L ee lllltGS ఖీing slight: , , •. -: ، و لأخب .3 , ,• o ,,... پہنام: ; ,“ {* ه
