Physics Vocabulary

123456789101112131415161718192021222324252627282930
Across
  1. 2. A device that generates an intense beam of coherent monochromatic light (or other electromagnetic radiation) by stimulated emission of photons from excited atoms or molecules.
  2. 3. The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.
  3. 5. A stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
  4. 7. The property of zero electrical resistance in some substances, usually at very low absolute temperatures.
  5. 9. A flat surface on which a straight line joining any two points on it would wholly lie.
  6. 11. The process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced.
  7. 12. The separation of white light into colours or of any radiation according to wavelength.
  8. 13. An electromotive force or potential difference expressed in volts.
  9. 14. The quantity of motion of a moving body, measured as a product of its mass and velocity.
  10. 17. The rate of emission of radiation, visible or otherwise.
  11. 23. The measure of magnetization that a material obtains in response to an applied magnetic field.
  12. 24. A statement that the values of two mathematical expressions are equal.
  13. 26. The basic unit of information in a quantum computer.
  14. 27. A material in which electric current does not flow freely.
  15. 28. A form of carbon consisting of planar sheets which are one atom thick, with the atoms arranged in a honeycomb-shaped lattice.
  16. 30. The value obtained by dividing the sum of several quantities by their number; an average.
Down
  1. 1. The rate at which something occurs over a particular period of time or in a given sample.
  2. 4. The conversion of matter into energy, especially the mutual conversion of a particle and an antiparticle into electromagnetic radiation.
  3. 6. The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
  4. 8. The intrinsic angular momentum of a subatomic particle.
  5. 10. The action of increasing the proportion of a particular isotope in an element, especially that of the isotope U-235 in uranium so as to make it suitable for use in a nuclear reactor or weapon.
  6. 15. The curved path of a celestial object or spacecraft round a star, planet, or moon, especially a periodic revolution.
  7. 16. The rate of change of velocity per unit of time.
  8. 18. The branch of science dealing with motion and forces producing motion.
  9. 19. Any of a number of subatomic particles carrying a fractional electric charge, postulated as building blocks of the hadrons.
  10. 20. The condition in which an object or system is subjected to an oscillating force having a frequency close to its own natural frequency.
  11. 21. An ionized gas consisting of positive ions and free electrons in proportions resulting in more or less no overall electric charge.
  12. 22. A nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy.
  13. 24. A regular shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant.
  14. 25. A flow of electricity which results from the ordered directional movement of electrically charged particles.
  15. 29. The dependence of various physical phenomena on relative motion of the observer and the observed objects, especially regarding the nature and behaviour of light, space, time, and gravity.