Popular Science Motithh/ 



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Photoeraph by Yerkcs Observatory 



Great masses of glowing hydrogen are tossed up as far as three hundred thousand miles 

 from what is called the "chromosphere," an irregular scarlet rim which will be seen surround- 

 ing the moon's disk. This rim, however, can also be studied even when there is no eclipse 



Scientists Will Test New Theory 



During the coming eclipse the region 

 around the sun will be most carefully 

 photographed for another purpose, and 

 one which constitutes a novelty in 

 eclipse observations. According to the 

 new theory of relati\ity, which is now 

 exciting so much discussion in scientific 

 circles, there should be a very slight dis- 



placement in the apparent positions of 

 stars seen close to the sun, owing to an 

 attraction exerted by the latter body 

 upon beams of light passing near it. This 

 displacement wall perhaps reveal itself 

 on the photographic plates. 



Other new features to be observed will 

 be the effects of the moon's shadow on 

 radio signals and the presence of electric 

 waves in the atmosphere. 



