which two conditions must exist in order for radiation to occur?\n the presence of a solid, liquid, or gas…

which two conditions must exist in order for radiation to occur?\n the presence of a solid, liquid, or gas and a temperature difference\n direct contact of molecules and the presence of a solid, liquid, or gas\n the presence of electromagnetic waves and direct contact of molecules\n a temperature difference and the presence of electromagnetic waves

which two conditions must exist in order for radiation to occur?\n the presence of a solid, liquid, or gas and a temperature difference\n direct contact of molecules and the presence of a solid, liquid, or gas\n the presence of electromagnetic waves and direct contact of molecules\n a temperature difference and the presence of electromagnetic waves

Answer

Brief Explanations:

Radiation is the transfer of heat energy by electromagnetic waves. It occurs when there is a temperature difference between two regions. It does not require direct contact of molecules or the presence of a specific state - solid, liquid or gas.

Answer:

D. a temperature difference and the presence of electromagnetic waves