β-Spectroscopy introduces the student into the field of special relativity and weak interactions of radioactive decays.

After radioactivity discovery, E. Rutherford separated radioactive emissions into two types: alpha (α) and beta (β^–) radiations, based on matter penetration and ability to cause ionization. The β^– particles have higher penetration and lower specific ionization than alpha particles. Beta particles are electrons (β^–) or positrons (β⁺), resulting by nucleon decays in unstable nuclei. Since beta decay is a three body process, the β energy spectrum is continuum.
The β-Spectroscopy experiments are performed using the Educational Beta and Premium Kits.