AMU stands for Atomic Mass Unit. It is a unit used to measure the mass of atoms and subatomic particles. 1 AMU is approximately equal to the mass of a proton or neutron.
Related terms
Atomic Number: The number of protons in an atom's nucleus, which determines its identity as an element.
Molar Mass: The mass (in grams) of one mole of a substance, which is numerically equal to its atomic or molecular weight in AMU.
Electromagnetic Spectrum: A range or continuum of all possible wavelengths (or frequencies) electromagnetic radiation can have.