Fun With Physics : The Physics Is Theoretical But The Fun Is Real

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Across
  1. 2. in optics, the maximum diameter of a light beam that can pass through an optical system
  2. 3. the effect that causes a change in frequency of a wave in relation to an observer who is moving relative to the wave source
  3. 8. name of the standard device you type with daily
  4. 9. best known for inventing the international system of absolute temperature that bears his name
  5. 13. unit of luminous intensity in the International System of Units (SI)
  6. 15. theory that all motion must be defined relative to a frame of reference and that space and time are relative rather than absolute concepts
  7. 16. phase difference or phase shift in a wave
  8. 18. an apparatus for measuring quantities of absorbed / emitted heat or for determining specific heats
  9. 19. The forgotten planet
  10. 20. a number of nucleons such that they are arranged into complete shells within the atomic nucleus
Down
  1. 1. the first woman to receive a Nobel Prize, in physics
  2. 4. sound beyond 20 kilohertz
  3. 5. month Covid-19 came to Jamaica
  4. 6. gravitational, Planck, Boltzmann, Avogadro, etc
  5. 7. surname of physicist who conducted the experiment to proves light may be a wave
  6. 10. one of two substances with a Young's Modulus greater than diamond
  7. 11. the 11th letter in the Greek alphabet
  8. 12. A rare gas of Group 18 that does not react with anything except fluorine gas
  9. 14. the heat required to convert a solid into a liquid or vapour, or a liquid into a vapour, without change of temperature
  10. 17. Synonym for excellent / valuable