Planet model with solar display

Details Planet model with solar display Planet model with solar display

1986-12-31

1988-08-02

Grieb, William H.

Education and demonstration

Geography

Terrestrial globe or accessory therefor

434136, G09B 2708

Patent

active

047611383

ABSTRACT:
A light source within a transparent hollow globe continually illuminates one half the globe to represent solar illumination. The light source is rotated about the north-south axis of the globe at the rate of one revolution per day and is concurrently oscillated about a second axis at the rate of one oscillation per orbit about the sun.

REFERENCES:
patent: 1959601 (1934-05-01), Schulse
patent: 2490185 (1949-12-01), Work
patent: 2680308 (1954-06-01), Miltenberger
patent: 3014287 (1961-12-01), Ernst
patent: 3197893 (1965-08-01), Mariotti
patent: 3305946 (1967-02-01), Gardin
patent: 3370415 (1968-02-01), McIlvaine
patent: 3527046 (1970-09-01), Pawl
patent: 4102121 (1978-07-01), Veazey
patent: 4666310 (1987-05-01), Snapka

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