Top network posts

• 63 What makes cheese so effective at absorbing microwaves?
• 49 Why is Helium so hard to liquify?
• 40 What is this sort of abstract rainbow?
• 40 How did Rutherford conclude that most of the mass (as well as the positive charge) was concentrated in the nucleus?
• 36 Why doesn't Earth appear smudgy or blurred in space photographs due to its fast rotation?
• 33 Is it possible to estimate the speed of a passing vehicle using a musical ear and the doppler effect?
• 31 What exactly makes a force conservative?
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