CELESTIAL NAVIGATION—POSITION FINDING ON THE EARTH

Produced by the US Army air forces. "This motion picture presents a basic over-all view of the principles of celestial navigation and deals with position-finding on the earth. Starting with an introduction explaining longitude and latitude and the determination of geographic position, it moves very quickly into a discussion of the geographic triangle, local hour angle, and sidereal hour angle. There follows a discussion of celestial triangles and the use of the various tables required to figure positions." Indiana. "A specialized film useful with considerable teacher supplementation and with advanced navigators. Might have some usefulness with training in celestial astronomy." Central Washington college of educ. "Very technical—for pre-aviation classes only." Collaborator