Solar shadowscope

Details Solar shadowscope Solar shadowscope

1979-05-09

1980-12-09

Martin, Jr., William D.

Geometrical instruments

Miscellaneous

Light direction

33228, 33271, G01C 100

Patent

active

042376114

ABSTRACT:
The invention concerns the field of the solar shadowscopes. The apparatus according to the invention is characterized by the fact that the conditions of sunshine are recreated by the displacement of the light source in the relation to the apparatus and that the final position of the light source is given by the real position meeting exactly a given theoretical position of the shadow on the date scale and on the hour scale of a point "T", actually shown by the point of intersection of two wires set in the light beam.
Application to the determination of the shadows on a model.

REFERENCES:
patent: 1817350 (1931-08-01), Clay
patent: 2884697 (1959-05-01), Sylvester
patent: 3068574 (1962-12-01), Bieg
patent: 4102054 (1978-07-01), Lewis

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