Radiation: Sources, Dose, Effects, Protection What is radiation? Radiation is energy transmitted through space in the form of electromagnetic waves or energetic particles. Types of radiation Two types: Ionizing radiation- e.g. α, β, γ, δ or X-Ray etc. There are two forms of ionizing radiation: I. Particulate- composed of very fast-moving particles (alpha and … [Read more...] about Radiation: Sources, Dose, Effects, Protection