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
A Guy Called Gerald This way it makes it easy for me to create the atmosphere and the rhythm suitable for the individual dancefloor. Kind of like an open kitchen in a restaurant – it’s an open kitchen in a club bringing the food to the people instantly – as soon as it’s produced it’s already on the dancefloor. What I’m looking for in 2015 is sound reproduction in the clubs being taken a lot more seriously than in the past."" A Guy Called Gerald Gerald Simpson (born 16 February 1967), better known as A Guy Called Gerald, is a British DJ, record producer