8C10.45 - Hoberman Sphere




Code: 8C10.45


Demo Title: Hoberman Sphere


Subject: Cosmology


Description:
Thinking about the expansion of the universe, we demonstrate this with the Hoberman's Sphere. By expanding the sphere and spinning it, this demonstrates how rotation and expansion directly increases or decreases speed.

Note: Use new Hoberman sphere, set up as shown in the first figure below.


Procedure:

  • Slowly expand the sphere and explain it expands at the same rate.
  • Begin to spin the sphere slowly and collapse the sphere to demonstrate that spinning speed will increase as it collapses and slows as it expands.

  • Video URL:


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