TOPIC:

E2-34: BASIC ORRERY (PLANETARIUM) 9 years 8 months ago #396

zzfixk23
Topic Author
Offline
User is blocked
Posts: 323
Thank you received: 0

ID Code: E2-34
Purpose: Demonstrate the sun-earth-moon spatial relationship and related concepts..
Description: This device, known as an orrery, illustrates how the earth's rotation causes day and night, how the earth's revolution around the sun and the tilt of its axis causes the seasons, and why the moon has phases.
Availability: Available