Interferometry is the use and analysis of superimposed Electromagnetic Radiation (EMR) waves. The patterns produced by waves from slightly different directions or Wavelengths include information about relative directions and wavelengths. The device carrying out this function is called an Interferometer.
Electronic Very-long-baseline Interferometry (e-VLBI)
Large Binocular Telescope (LBT)
New Gravitational Wave Observatory (NGO)
Stellar Radius Determination
Very Large Array (VLA)
Very-long-baseline Interferometry (VLBI)