PIRA 200
Astronomy
8A10.10 |
PLANETARY ASTRONOMY |
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Solar System Mechanics |
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Orrery |
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The system is not to scale. The periods of the orbit are scaled. All the planets are on friction clutches and can be positioned by hand. |
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8A10.25 |
PLANETARY ASTRONOMY |
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Solar System Mechanics |
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Phases of the Moon |
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Rotate the camera in a complete circle keeping the Moon globe, or the cork ball used as the Moon, in the light. |
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8A10.55 |
PLANETARY ASTRONOMY |
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Solar System Mechanics |
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Retrograde Motion Model |
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Use the crank on the back to move the two planets around the sun. A sliding rod shows the relative motion of the two planets. |
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8A10.80 |
PLANETARY ASTRONOMY |
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Solar System Mechanics |
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Celestial Sphere |
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No instructions |
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8B10.30 |
STELLAR ASTRONOMY |
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Misc. |
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Sunspots on the Overhead |
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A light bulb on a variac is turned up to visible glow and placed on an overhead projector that is turned off. When the overhead is turned on, the filament appears as a dark spot. |
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8B10.35 |
STELLAR ASTRONOMY |
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Misc. |
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Random Walk |
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Use a Bumble Ball ( a common toy ) to illustrate the random walk of high energy photons in a star. |
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8C10.10 |
COSMOLOGY |
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Models of the Universe |
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Expanding Universe |
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Five 10cm Styrofoam balls are threaded onto a rubber hose at equal intervals. Pull on the free end and watch the expanding intervals. |
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