Top network posts

• 64 What is the energy source if a tall water tank is used to transfer floating objects upwards instead of cables with motors?
• 47 Are there any theoretical limits on the energy of a photon?
• 32 What does the monopole/quadrupole moment of the Earth signify?
• 30 Is there a limit as to how fast a black hole can grow?
• 29 How is it possible to store antimatter?
• 27 Why don't photons split up into multiple lower energy versions of themselves?
• 25 The locker problem - why squares?
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