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Visual Education (Jan-Nov 1920)

Page scan 00072 from Visual Education

Record Details:

Title:
Visual Education
Date:
Jan-Nov 1920
Publisher:
Society for Visual Education, inc.
Volume:
Visual Education (Jan-Nov 1920)
Leaf #:
00072
Language:
English
Collection:
Non-Theatrical Film
Format:
Periodicals
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Date Added:
April 18, 2025
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22 Visual Education little ^reflector. His artistic temperament seems to have been adapted to the peculiar requirements of the exacting work of making mirrors and lenses. Phenomenal success soon attended his efforts. Five of his refractors were purchased \\ V\ '^%A x«w %X1 !■■ The great Yerkes telescope, the largest refractor in the world. Its length is 62 feet, its diameter is 40 inches and its weight is 9 tons. The chairs on the floor and the winding stairway on the pier give an idea of its size. It is accurately moved by clockwork so that it follows the stars in their motion across the sky.