Not necessarily.
If you are referring to the spectrum of electromagnetic
radiation like gamma, X, UV, visible, infra red, thermal,
microwave, shortwave, radio/TV waves, they are pure
energy radiation.
If you are referring to the radiation emitted by radioactive
elements you have:
Alfa radiation. Consists of high energy (kinetic energy)
helium nucleus (particles).
Beta radiation. High energy (kinetic energy) neutrons (particles).
Gamma radiation. Very small wavelength Electromagnetic
radiation (pure energy).
radiation
Radiation
Radiation
Heat Radiation does not need a medium (particles of matter).
Radiation
radiation
Radiation does not require matter.
Radiation
Radiation
Heat Radiation does not need a medium (particles of matter).
Radiation
V. V. Balashov has written: 'Interaction of particles and radiation with matter' -- subject(s): Particles (Nuclear physics), Matter, Effect of radiation on
Radiation.
radiation
Friction
Radiation can travel through; solids, liquids, gases and it can also pass through a vacuem (where particles are not present). This is because radiation uses waves to emit not particles.
Radiation, or electromagnetic waves do not require matter to carry energy.