Written Report - Light Intensity

The aim of this experiment is to find wether unused flickers are more(prenominal)/ little competent when compared to incandescent lights in terms of light emergeput and discharge consumption. The aim of this investigation is to find out why fluorescent fixture lights are more/less efficient than incandescent lights in terms of light output and cogency consumption. The different lights that entrust be used are: 20 watt fluorescent light 15 watt fluorescent light 25 watt incandescent light 40 watt incandescent light 20 watt incandescent light 15 watt incandescent light Extended probe erupt Extended Investigation Light 21/03/2011 Aim: explore enquire: Compare fluorescent and incandescent lights based on the energy consumption and light production. Why do fluorescent lights cast more/less light than incandescent lights whilst down more/less energy? Theory: An incandescent light electric-light bulb has a very thin tungsten fibril that is hous ed intimate the globe. These lights work by running electricity by dint of the filament. Because the filament is so thin, it eat upers a lot of resistance and as a result heat is produced. As the filament heats up, it incandesces white.

During this work out a lot of heat is released and the majority of the electricity is born-again into heat, with solitary(prenominal) a very small percentage of the electricity converted into light. An average incandescent light produces only 15 lumens per watt. In a fluorescent light, there are electrodes at some(prenominal) ends of a fluorescent tube, and a turgidity contai ning argon and atomic summate 80 vapour is! inner the tube. A stream of electrons flows through the gas from one end of the fluorescent tube to the other. These electrons come across into the hectogram atoms and excite them. As the mercury atoms move from the provoke bring up back to the unexcited state, they give off ultraviolet photons. When the photons vex into contact with the phosphor coating on the inside of the fluorescent tube, the phosphor fluoresces to piddle visible light....If you want to get a full essay, outrank it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper