Sound Pictures in the Solution of Solar Eclipse Problems

The application of sound picture technic toward the solution of solar eclipse problems is described. Motion pictures of the shadow spot cast upon the earth by the moon during an eclipse are taken simultaneously with photographic records of time signals broadcast by radio. By coördinating the information contained in these photographic records of the shadow spot, the time signals, and identification marks on the earth, sufficient information is available for solving various astronomical problems such as determining with greater accuracy the distance of the moon from the earth, the relative positions of earth, moon, and sun, and to permit more accurate computation and prediction of eclipses. A method is also described of making a qualitative study of the variation of light intensity at points in the path of the shadow.

Print ISSN

0097-5834

Published

1931-08

Content type

Original Research

DOI

10.5594/J08016