A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to … See more Physical discoveries The fluorescence of certain rocks and other substances had been observed for hundreds of years before its nature was understood. By the middle of the 19th century, … See more Fluorescent lamps come in many shapes and sizes. The compact fluorescent lamp (CFL) is becoming more popular. Many compact fluorescent lamps integrate the auxiliary electronics into the base of the lamp, allowing them to fit into a regular light bulb socket. See more Frequent switching Frequent switching (more than every 3 hours) will shorten the life of lamps. Each start cycle slightly erodes the electron-emitting surface of … See more The fundamental mechanism for the conversion of electrical energy to light is the emission of a photon when an electron in a mercury atom falls from an excited state into a lower See more The spectrum of light emitted from a fluorescent lamp is the combination of light directly emitted by the mercury vapor, and light emitted by the phosphorescent coating. The spectral lines from the mercury emission and the phosphorescence effect give a combined … See more Luminous efficacy Fluorescent lamps convert more of the input power to visible light than incandescent … See more Systematic nomenclature identifies mass-market lamps as to general shape, power rating, length, color, and other electrical and illuminating characteristics. In the United States and Canada, lamps are typically identified by a code such as FxxTy, where F is … See more WebOct 3, 2024 · What Is a Fluorescent Light Tube? All fluorescent tubes (lamps) consist of a sealed glass vessel that contains a small amount of mercury and an inert gas, usually argon, at a very low pressure. The inside of the tube or …

The History of Fluorescent Lights - ThoughtCo

WebCork Marcheschi (mark-e-ski; born April 5, 1945) is an American sculptor and musician, most notably recognized for his pioneering use of light in sculpture, his large body of public art work, and founding avant-garde psychedelic rock band Fifty Foot Hose. In the words of curator David Ryan, "Through art, music, writing, collecting and teaching, Cork … WebLight tubes (also known as light pipes, tubular skylights or sun tunnels [1]) are structures that transmit or distribute natural or artificial light for the purpose of illumination and are examples of optical waveguides . port angeles wa tide chart

How to Test Fluorescent Bulbs: 9 Steps (with Pictures) - WikiHow

Web20.5.9 Lighting. 1. Fluorescent tubes are better for indoor lighting. Slim tubes save energy, and are cost-effective. 2. When lamp and tubes level are at low levels, the illumination is … WebFluorescent lamps and tubes are an energy-efficient alternative to incandescent lamps for the following reasons: Three to four times more energy-efficient. Cost less to use. Reduce greenhouse gas emissions and other pollution from energy production. Last up to ten times longer than standard incandescent light bulbs. WebLED tube is a type of LED lamp used in fluorescent tube luminaires with G5 and G13 bases to replace traditional fluorescent tubes. [1] As compared to fluorescent tubes, the most important advantages of LED tubes are energy efficiency and long service life. LED tubes are sometimes also referred to as ‘LED fluorescent tubes’. General [ edit] irish mastiff puppies for sale