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Orrery,Solar System model,Sun-Earth-Moon Movement For Sale


Orrery,Solar System model,Sun-Earth-Moon Movement



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Orrery,Solar System model,Sun-Earth-Moon Movement:
$89

    Orrery,Solar System model,Sun-Earth-Moon Movement Model,geography teaching/demo Instrument.Please tell me your phone number after your purchase,which is needed for shipping.

    • Use:
      This model represents the relative movement of the sun,the earth,and the moon,used in teaching to demonstrate the relation among the relative movement of the three celcstial bodies,thereby ilucidating such natural phenomena as the originatiou of days and nights,seasons,and climatic zones,likewise solar and lunar eclipses as well as the changing phases of the moon.

      In this model,the sun can light,and the light is drived by dry batteries.And the Earth-moon can revolve around the sun and self-rotate,drived by dry batteries or man'hand .Also,the moon will revolve around the earth while the earch revolve around the sun.

      Parameters:
      metal base's diameter:16.2cm
      sun's diameter:10.2
      max length:56cm
      max height:37cm

      How to use it:
      This Sun-Earth-Moon movement model can be drived by electricity.the sun can be lighted.
      The sun need two #5 batteries,so does the speed controler.

      The price is low,so you can not expect it's good as an orrery of more than hundreds dollars.

      we welcome wholesalers to contact us.

    • Parts to assembly this model .

    • We accept paypal only

    • Usually we ship it by Fedex,DHL or AUX,shipping time is about 7 to 12 days,affected by distance and wether.If where you live is a remote adress express company tell me extra fee for remote place is required,buyer should undertake it,but normally this is rare.


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