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  • Member for 9 years, 7 months
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96 votes

Why don't we use weights to store energy?

50 votes

If I sliced the universe in half, would the slice go through a star?

25 votes

When filling a bottle, why is the level after an overflow lower than the top?

19 votes

Photoelectricity in daily life

13 votes

How does a virus fall down in static air?

9 votes

Does a blueshift change the energy of a photon?

4 votes

How can time dilation be symmetric?

2 votes

Why does inelastic collision obey the conservation of momentum?

2 votes

Can people feel the low heat radiation from very cold surfaces?

0 votes

How to interpret units of measurement like $\text{kg m/s}^2$?

0 votes

Can we distinguish between gravity and electrostatic forces interacting on celestial bodies?