Electromagnetic radiation and B fields in EMR are in-phase (see math section below). An important aspect of light's nature is its frequency. The frequency of a wave is its rate of oscillation and is measured in hertz, the SI unit of frequency, where one hertz is equal to one oscillation per second. Light usually has multiple frequencies that sum to form the resultant wave. Different frequencies undergo different angles of refraction, a phenomenon known as dispersion. A wave consists of successive troughs and crests, and the distance between two adjacent crests or troughs is called the wavelength. Waves of the electromagnetic spectrum
The Crests group continued well into the 1990s and toured with a five-piece band including Leona Carter on keys. The 1984 John Hughes' teen film "Sixteen Candles" took its title from The Crests' song, which was re-recorded by The Stray Cats for the"Sixteen Candles" soundtrack. In June 1987, for a concert in Peekskill, New York, Maestro, Carter, Torres, and Gough (The Original Crests) reunited as "The Crests", which was organized by Carter. From 1990-2010, Johnny Maestro invited Carter to join him and The Brooklyn Bridge to record with them and to re-record some of their greatest hits. From the late 2000s until