Can Radiation Happen in Solids

All physical substances in solid, liquid, or gaseous states can emit energy via a process of electromagnetic radiation because of vibrational and rotational movement of their molecules and atoms [2]. … The radiation occurs at all temperatures, with the rate of emission increasing with the temperature.

Is radiation a solid liquid or gas?

Particle radiation is a state of matter that is neither solid, liquid nor gas. States of matter depend on the energy, mostly rotational, of the whole molecule.

Can radiation happen in an empty space?

The thermal radiation also called infrared radiation can transmit heat through empty space. In the radiation no mass is exchanged and no medium is needed. For example the heat from the sun or heat emitted from the filament of a light bulb is an example of the radiation.