Physic Crossword

4. A form of electromagnetic radiation with wavelengths ranging from as long as one meter to as short as one millimeter, or equivalently, with frequencies between 300 MHz (0.3 GHz) and 300 GHz.
6. The change in direction of a wave due to a change in its transmission medium.
7. Transfers energy from one point to another, often with no permanent displacement of the particles of the medium—that is, with little or no associated mass transport.
8. Do not require a medium. Instead, they consist of periodic oscillations of electrical and magnetic fields generated by charged particles, and can therefore travel through a vacuum.
13. In physics a _ is a disturbance or oscillation that travels through space and matter, accompanied by a transfer of energy.
14. The number of occurrences of a repeating event per unit time.

1. The wavelengths are shorter than those of UV rays and longer than those of gamma rays.
2. Electromagnetic radiation with a wavelength shorter than that of visible light, but longer than X-rays, that is, in the range between 400 nm and 10 nm, corresponding to photon energies from 3 eV to 124 eV.
3. Propagate through a medium, and the substance of this medium is deformed.
5. Electromagnetic radiation that is visible to the human eye, and is responsible for the sense of sight
9. A type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
10. In physics, _ is a conserved extensive property of a physical system, which cannot be observed directly but can be calculated from its state.
11. Electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometres (nm) to 1 mm.
12. The spatial period of the wave—the distance over which the wave's shape repeats.