Thomas Edison’s incandescent lamps brightened the world for a long time. But, the fact is that only 10 to 12% of electrical energy is converted into visible light by an incandescent lamp and the rest is wasted into heat. That is why CFL light bulbs are replacing incandescent lamps very quickly. CFL stands for Compact […]
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Around 1880, many research experiments were being conducted for the development of a constant electric light bulb. Thomas Edison had acquired a US patent for “an electric lamp using carbonized filament” which could last for up to 1200 hours. Though they had developed an electric light bulb (incandescent lamp), they could not sell the bulbs […]
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If you care about saving energy (or saving the environment) or you just want to save your money, you should take interests in LED light bulbs. Well, I assume you know what an LED (Light Emitting Diode) is; a semiconductor PN junction device which emits light when supplied with DC power. This article is about, LED […]
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An electric current is defined as the flow of charge (electrons). It can flow through a conductor only when either a return path to the source or path to the earth is available. (Earth can suck all the charge from even a lightening bolt :p ). So, that was an electric current. Almost everybody knows that an […]
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