| 摘要 |
<p>An orrery for displaying planetary representations is provided. The orrery has a frame and a plurality of concentric hollow tubes rotatably mounted on the frame. First and second ends of each of the tubes extend axially beyond first and second ends respectively of the outwardly adjacent tube. A plurality of supports are provided each for connecting at an inner end thereof to the first end of one of the tubes so as to extend radially outward from it. Each of a plurality of bayonnet plug and socket means removably connect the inner end of one of the support means to the first end of one of the tubes. Planetary body representations are each connected to a position on one of the supports remote from the tube to which that support is connected. A drive mechanism connected to a second end of each of the tubes rotates each of the tubes.</p> |
