Which of the following statements is true regarding radiant heat?

Radiant heat transfer is a form of energy transfer that does not require a medium, meaning it can occur through empty space or a vacuum. This characteristic distinguishes radiant heat from other forms of heat transfer, such as conduction and convection, which necessitate a material medium like a solid, liquid, or gas to carry the heat energy.

For instance, the heat from the sun reaches the Earth through the vacuum of space via infrared radiation. This is why saying it can travel through a vacuum is accurate—radiant heat can propagate without the need for any matter to transmit it, making it unique among the different modes of heat transfer. This understanding is fundamental in applications such as heating systems, solar energy technologies, and understanding thermal radiation concepts.