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>For other uses, see Light (disambiguation). Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific setting, electromagnetic radiation of any wavelength. The three basic dimensions of light (i.e., all electromagnetic radiation) are:intensity (or brilliance or amplitude), which is related to the human perception of brightness of the light,frequency (or wavelength), perceived by humans as the color of the light, andpolarization (or angle of vibration), which is not perceptible by humans under ordinary circumstances. Due to wave-particle duality, light simultaneously exhibits properties of both waves and particles. The precise nature of light is one of the key questions of modern physics. See more at Wikipedia.org...

[ytv Toronto) is a television station based in Toronto, Ontario. Owned by CHUM Limited, it is Canada's third-oldest UHF television station and the flagship station of the Citytv system.Broadcasting for the first time on September 28, 1972, CITY was best known for its unconventional approach to news and local programming, an approach that continues today and has carried over to the other stations in the Citytv system. (See Citytv for more on these practices.)Originally owned by Channel Seventy-Nine Ltd., a group which consisted of Phyllis Switzer, Moses Znaimer, Jerry Grafstein, Edgar Cowan and others, CITY was in debt by 1975. Multiple Access Ltd. (the owners of CFCF in Montreal, Quebec) purchased 45% of the station. Three years later, it sold its stake to CHUM Limited. CITY was purchased outright by CHUM Limited in 1981 with the sale of Moses Znaimer's interest in the station. Znaimer would remain with the station as an executive. See more at Wikipedia.org...]