His most notable contribution was his adaptation of the Michelson's interferometer technique for measuring close double stars.
In 1892−93 the Michelson interferometer was used to determine the length of the metre in terms of the wavelength of the red line of cadmium.
The underlying measuring principle corresponds to that of the Michelson interferometer.
Robert C. Michelson | Michelson interferometer | Fabry–Pérot interferometer | Michelson's interferometer | Laser Interferometer Space Antenna | Astronomical interferometer | astronomical interferometer |
When the Royal Observatory, Edinburgh established its outstation at Monte Porzio Catone just south of Rome, Twiss decided to move his Michelson interferometer there.