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+ | Bulb as in electric '''light bulb''' is not the technical term to describe a device which is specifically designed to emit light. The correct term is lamp. Light emitting devices - lamps fall into 2 x basic categories: incandescent lamps and discharge lamps. The former employs the heating effect of an electric current. A filament usually made from nichrome deliberately offers a resistance to the flow of current converting electrical energy into heat energy. The heat developed in a typical incandescent - filament - reaches operatring temperatures in the order of 3000 C. At this temeperature the filament glows white and incandesces - emits light - hence the term incandescent lamp. In order to prevent the filament from burning it is placed in a glass envelope which contains either an inert gas or a vacuum. The shape of the glass envelope h resembles the shape of a horticultural bulb .... as in tulip, dafodil etc |
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− | 🧑🦱👳♂️🧑🦱👴👱👵👱♂️👳♀️🧑🦱🧑🦱👳♂️🧕🧑🦱👮♂️👨🦱👮♂️👨🦱💂👨🦱👷👱👱🧕👩🦳👳👩🦰👷♀️👷👷👷♀️💂💂🧑🌾👳👩🎓👳👨🎤👩🏻🏫👳🧑⚕️👷♀️👨🎓👷♀️👩🏻🏫👳🧑🏭🧑🏭👨🏭🧑🏫👱♂️👩🎤👱♂️💂♂️👱♂️👁👃👁😐😛😐🧐😰😒🥵😒🥵😞😨🙁😯😏🤤🤠🤠🤠🤧🤧🥵🤮🥵😈🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡 |
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[[Category:My pp itches Hard]] |
[[Category:My pp itches Hard]] |
Latest revision as of 02:00, 2 October 2020
Bulb as in electric light bulb is not the technical term to describe a device which is specifically designed to emit light. The correct term is lamp. Light emitting devices - lamps fall into 2 x basic categories: incandescent lamps and discharge lamps. The former employs the heating effect of an electric current. A filament usually made from nichrome deliberately offers a resistance to the flow of current converting electrical energy into heat energy. The heat developed in a typical incandescent - filament - reaches operatring temperatures in the order of 3000 C. At this temeperature the filament glows white and incandesces - emits light - hence the term incandescent lamp. In order to prevent the filament from burning it is placed in a glass envelope which contains either an inert gas or a vacuum. The shape of the glass envelope h resembles the shape of a horticultural bulb .... as in tulip, dafodil etc