Academy of natural sciences

• Publisher: Elsevier Science
• Year: 1877
• Tongue: English
• Weight: 104 KB
• Volume: 103
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(77)90769-4

✦ Synopsis

Heat received on 1 sq. centimetre.

~ormally.

On the surface of the soil.

1. From sunrise till noon, 451"5 293-5 2. From noon till sunset, 424"9 280.6 3. From sunrise till sunset, 876'4 574"1 "The calories received normally varied between 0 and 1"21, in 15 hours of exposure.

"The calories received on the earth's surface varied between 0 and 1"10, in 15 hours of exposure.

"The heat received on the earth's surface, is "655 of the normal heat.

"The heat received normally on Jan. 4th, is "610 of that received on July llth.

"The heat received on the earth's surface on Jan. 4th, is "281 of that received on July llth.

" These results give a precise measure of the irregularities produced, in summer and in wintery by the obliquity of the solar rays, and by the duration of the sun's appearance above the horizon, between the absolute values of the intensity of solar radiation, and between the ratios of the quantity of heat sent directly, to that which is received upon the horizontal surface of the soil."--Oomptes tSendus, March 12th, 1877.

C.