Radiation

Radiation is a transmission of energy from one medium to another
mediun through wave or particle format.

Radiation are different types

Electromagnetic radiation

Acoustic radiation

Gravitation

Particle radiation

Depending upon the energy of radiated molecule or particles, radiation
is classified into two class.

Ionizing radiation

Non ionizing radiation

Ionizing radiation the radiated particles energy belongs to more than
10 eV which is sufficient to break chemical bonds of molecules.

Black hole information paradox