Interferometry

thumb|250px|Figure 1. The light path through a Michelson interferometer. The two light rays with a common source combine at the half-silvered mirror to reach the detector. They may either interfere constructively (strengthening in intensity) if their light waves arrive in phase, or interfere destructively (weakening in intensity) if they arrive out of phase, depending on the exact distances between the three mirrors.

type of astronomical interferometry used in radio astronomy

effect due to rotation in special relativity

mixing signals from many telescopes to produce images with high angular resolution

illumination technique in optical microscopy

subclass of SAR sensor

function describing the extremes of an oscillating signal

thumb|right|A Large Aperture Scintillometer (transmitter) for measurement of the sensible heat flux over long distances at Wageningen University measurement site A scintillometer is a scientific device used to measure turbulent fluctuations of the refractive index of air caused by variations in temperature, humidity, and pressure. It consists of an optical or radio wave transmitter and a receiver at opposite ends of an atmospheric propagation path. The receiver detects and evaluates the intensity fluctuations of the transmitted signal, called scintillation.

interference effect of two photons

measures the real and imaginary components of the complex refractive index

which quantifies interference contrast in optics

glass tank of water demonstrating the basic properties of waves