Education and demonstration – Science – Astronomy
Patent
1979-06-19
1981-06-09
Kellogg, Arthur D.
Education and demonstration
Science
Astronomy
434285, 434287, 135 33R, G09B 2700
Patent
active
042716047
ABSTRACT:
A portable planetarium is disclosed for ascertaining the position of the sun, the planets and their satellites and the stars throughout the year. The planetarium includes a frame having a configuration defined by a frustrum of a cone with a substantially hemispherical cap attached thereon. A pole is aligned with the center axis of the frustrum of the cone and extends through the top of the hemispherical cap, with the intersection of the pole and the top of the hemispherical cap utilized as a reference point denoting the north star or Polaris. A covering is secured to the frame and a plurality of markings are selectively applied to the covering using Polaris as the reference point. A plurality of adhesive symbols may also be included to form an educational kit to teach the location of stars and the path of the sun and the planets during the course of the year.
REFERENCES:
patent: 336280 (1886-02-01), Bailey
patent: 1150731 (1915-08-01), Barcus
patent: 2372487 (1945-03-01), Hagner
patent: 2477027 (1949-07-01), Wenberg
How to Set Up and Use Astrobella, by C. M. Sharp et al., 1977, 117 East Lane, West Horsley, Leatherhead, Surrey KT246LJ, Gt. Britain.
The Stars, by H. A. Rey, p. 22.
Science News, vol. 111, p. 350 "June Stars".
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