Top network posts

• 311 Why do ballpoint pens write better on pages that have pages below them?
• 89 Why does the shower curtain move towards me when I am taking a hot shower?
• 84 Birds on a wire (again) - how is it that birds feel no current? They are just making a parallel circuit, no?
• 63 Why is the potential energy of a spring the same when it is compressed and stretched?
• 62 Is this cheap "air conditioner" able to cool a room?
• 29 Why use steam instead of just hot air?
• 24 Can a water vortex (whirlpool) be used to efficiently store energy?
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