Standing waves are one of those topics that lots of ... separated on the strip line by a distance proportional to the wavelength. For me personally, this was a real eye-opener.

Using high-frequency sound waves to make tunable optical filters ... that allows users to precisely and rapidly control the wavelength, amplitude and propagation direction of a laser beam.

The rig uses a 60W ultrasonic transducer, operating at approximately 40 KHz, to generate a standing wave in combination ... These areas correspond to the wavelength of the emission from the ...