infrared
infrared light
infrared radiation
infrared emission

Infrared radiation is not special when compared to visible light.

The earth is warmed by infrared radiation from the sun.

The farther away they are, the more of their light becomes infrared radiation.

In addition, he was the first person to discover the existence of infrared radiation.

As a result, an excess of infrared radiation is observed for the star.

The star also lacks a strong excess of infrared radiation.

Does it have to do with how infrared radiation behaves?

In broiling, you are trying to heat food using infrared radiation.

No two substances absorb infrared radiation exactly the same way, he said.

Infrared radiation can be used as a deliberate heating source.