4 ms·

Also note that 19TW is not even mostly heat but useful work: turning motors, pumping fluids or gases, generating light and sound, etc.

• fsh 2y ago
  This is incorrect. Almost all primary energy is turned into heat eventually. Only a microscopic fraction is turned into light that escapes into space.
  • wffurr 2y ago
    The stored potential energy of a concrete block on the 15th floor of a building takes a very long time to turn back into heat.