Although infrared light cannot be seen by the human eye, it can be detected by sensors designed to measure the radiation frequencies below the visible range.

A little bit of research showed me that all of the radiation frequencies are doubled there.

When the small piece of carbon is put in, it transduces amongst radiation frequencies so that the cavity radiation comes to thermodynamic equilibrium.

Extremely low frequency (ELF) is the range of radiation frequencies from 3 to 30 Hz.

But for small n (or large k), the radiation frequency has no unambiguous classical interpretation.

The electromagnetic spectrum is the range of all possible electromagnetic radiation frequencies.

Extremely low frequency (ELF) is radiation frequencies from 3 to 30 Hz (10 to 10 meters respectively).

In the proper frame of the electrons, the undulator is contracted which leads to an increased radiation frequency.

The repelatron circuits must respond to the exact radiation frequency of each element present.

Wigglers make a wide range of electromagnetic radiation frequencies.