What is required for conduction and convection but not radiation?

Answer:

A material medium

It is required in both that the pieces of matter are touching so that the heat travels through the matter and not empty space (Radiation)

Contributor: Salil91
First answer by ScienceISGod. Last edit by ScienceISGod. Contributor trust: 67 [recommend contributor recommended]. Question popularity: 1 [recommend question].