Motion detectors are widely known for their role in home security systems, but their usefulness extends far beyond guarding ...

Your garden variety motion detector uses IR, but these days, there are fancier technologies for achieving similar goals. If so desired, you can source yourself a microwave-based presence sensor ...

Aalto University scientists have broken the world record by fourteen fold in the energy resolution of thermal photodetection. The record was made using a partially superconducting microwave detector.