Monday, July 9, 2007

2 questions to ask high school kids

1. Does earth rotate clockwise or counter clockwise seen from North pole to south?
2. Does earth orbits around the sun clockwise or counter clockwise seen from North pole to south?

I found it very useful to think about these questions. It helps them appreciate about experimental physics too.
Advanced: It made me realise that I can't measure my own velocity [or direction of spin or orbit] just by looking at me. Velocity has no absolute meaning [special relativity]

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