Across
- 2. the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.
- 3. 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,
- 6. when an object changes its position over time
- 7. the study of motion and energy
- 10. reduction in speed or rate.
- 12. the fourth letter of the Greek alphabet ( Δ, δ ), transliterated as ‘d’.
Down
- 1. the action or process of distributing things or people over a wide area.
- 4. the fact or state of being engrossed in something.
- 5. an amount of space between two things or people
- 8. the rate at which or something is able to move
- 9. is the point on a wave with the greatest positive value or upward displacement in a cycle.
- 11. increase in the rate or speed of something.