Written Report - Light Intensity

The aim of this experiment is to find wether fluorescent flickers are more(prenominal)/less competent when compared to incandescent lights in terms of light emergeput and button consumption. The aim of this investigation is to find out why fluorescent lights are more/less efficient than incandescent lights in terms of light output and cogency consumption. The different lights that will 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

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Extended Investigation Light

21/03/2011

Aim:

Research 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 consuming more/less energy?

Theory:
An incandescent light electric-light bulb has a very thin tungsten filament that is housed intimate the globe. These lights work by running electricity through the filament. Because the filament is so thin, it offers a lot of resistance and as a result heat is produced. As the filament heats up, it incandesces white.



During this process a lot of heat is released and the majority of the electricity is reborn 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 containing argon and atomic number 80 vapour is inside the tube. A stream of electrons flows through the gas from one end of the fluorescent tube to the other. These electrons bump into the hectogram atoms and excite them. As the mercury atoms move from the excited 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: Orderessay



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