Education and demonstration – Science – Astronomy
Patent
1994-10-03
1996-06-25
Harrison, Jessica J.
Education and demonstration
Science
Astronomy
434284, G09B 2702
Patent
active
055295002
ABSTRACT:
A disk that illustrates a polar view of the earth rotatably mounted on a flat supporting base representing a celestial plane through the earth's equator. A radial arm is provided with its proximal end pivotally mounted on the center of the earth disk and its distal end fitted with a fixed disk representing the moon, such that the moon's orbit is modeled by the arm's rotation around the earth showing the near side of the moon always facing the earth. Half of the moon disk is covered by a semicircular structure representing the zone of exposure to sunlight, which can be used to explain the gradual and continuous change of moon phase as the moon revolves around the earth. Other embodiments of the invention illustrate the seasonal change of the earth's exposure to sunlight, the moon's effect on tides, and the earth's and moon's revolutions around the sun.
REFERENCES:
patent: 321000 (1885-06-01), Berneike
patent: 327631 (1885-10-01), Whitcomb
patent: 477846 (1892-06-01), Rassweiler
patent: 522082 (1894-06-01), Nichols
patent: 550523 (1895-11-01), Nichols
patent: 554809 (1896-02-01), Yaggy
patent: 854513 (1907-05-01), Martin
patent: 2475620 (1949-07-01), Justice
patent: 2943435 (1960-07-01), Gorsuch
patent: 3373493 (1968-03-01), McDonald
patent: 4194306 (1980-03-01), Rogers
patent: 4334297 (1982-06-01), Oros
patent: 5114348 (1992-05-01), Tzeng
Durando Antonio R.
Harrison Jessica J.
O'Neill Michael
LandOfFree
Two-dimensional earth-moon-sun instructional model does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-dimensional earth-moon-sun instructional model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-dimensional earth-moon-sun instructional model will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2185298