W - X - Y - Z
Unit of power in the SI unit system. 1 Watt = 1 Joule per second.
The distance between two peaks of a wave. See also Electromagnetic radiation and Frequency.
A very dense star with a mass below 1.4 solar masses that is no longer burning nuclear fuel. The Sun will one day evolve into a white dwarf with a diameter of 10 000 km.
A band of radio frequencies extending from 5200 to 10 900 MHz
Electromagnetic radiation with wavelengths between those of ultraviolet and gamma rays, approximately 0.01-10 nm. At these short wavelengths, it is more common to talk in terms of photon energies. These energies range from 0.1-100 keV.
Higher-energy part of the X-ray spectrum ranging from approximately 5 keV to 100 keV.
Band of low energy X-rays, between 0.1 keV and approximately 5 keV.
Atmospheric wind component which flows along the latitude.