Across
- 4. The four-dimensional space whose points are events.
- 5. subatomic particles that carry a fractional electric charge,building blocks of the hadrons.
- 6. For a wave, the distance between two adjacent troughs or two adjacent crests.
- 8. The theory developed from Planck’s quantum principle and Heisenberg’s uncertainty principle.
- 9. A point in space-time, specified by its time and place.
- 10. A point in space-time at which the space-time curvature becomes infinite.
Down
- 1. The singularity of energy at the beginning of the universe.
- 2. A region of space-time from which nothing, not even light, can escape, because gravity is so strong.
- 3. A thin tube of space-time connecting distant regions of the universe.
- 4. A theory of physics in which particles are described as waves on strings. Strings have length but no other dimension.
- 7. The study of the universe as a whole.
- 8. The indivisible unit in which waves may be emitted or absorbed
- 10. The component frequencies that make up a wave.