THE questions raised by Mr. Preston (NATURE, March 23) can only be fully answered by Prof. Michelson himself; but as one of the few who have used the interferometer in observations involving high ...

The resolution of an interferometer is dependent on the linewidth of the illuminating laser, wavelength stability and its absolute wavelength. UniKLasers introduce a range of single frequency lasers ...

White light interferometry (WLI) is a contact-free optical method for measuring surface height. It uses the phase difference between the light reflected off a reference mirror and the target sample to ...