NO. 3 RADIATION OF THE ATMOSPHERE — ANGSTROM 75 



eclipse and the value given by night observations under the same 

 temperature and humidity conditions, displays a very slight differ- 

 ence. I therefore think that one may conclude that the effective 

 temperature radiation during the day follows the same laws as hold 

 for the nocturnal radiation. More extensive investigations are how- 

 ever needed before this conclusion can be regarded as definite. 



It is of interest to notice that during the whole time preceding 

 the eclipse, the instrument showed an outgoing radiation to the sky. 

 From the intensity of this radiation it can be concluded that, at least 

 before noon, the temperature radiation to the sky must have been 

 stronger than the diffuse radiation from it. The same was found 

 by Homen to be the case at Lojosee in Finland, as has been indicated 

 in the discussion above. 



