KID

A KID (for kinetic inductance detector ) is an electronic device generally used to detect light and other electromagnetic radiation, in that sense like a CCD, but more sensitive, at the expense of having to be cooled to 1 K. They were first developed in 2003 and a primary application is for astronomical instruments. Millimeter to X-rays are considered possible. An MKID (for microwave KID or microwave kinetic inductance detector) is a KID in the millimeter astronomy range.