An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated until it glows. The filament is enclosed in a glass bulb with a vacuum or inert gas to protect the filament from oxidation. Current is supplied to the filament by terminals or wires embedded in the glass. A bulb socket provides mechanical support and electrical connections. Incandescent bulbs are manufactured in a wide range of sizes, light output, and voltage ratings, from 1.5 volts to about 300 volts. They require no external regulating equipment, have low manufacturing costs, and work equally well on either alternating current or direct current. As a result, the incandescent bulb became widely used in household and commercial lighting, for portable lighting such as table lamps, car headlamps, and flashlights, and for decorative and advertising lighting. Incandescent bulbs are much less efficient than other types of electric lighting. Less than 5% of the energy they consume is converted into visible light; the rest is lost as heat. The luminous efficacy of a typical incandescent bulb for...

"An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated until it glows. The filament is enclosed in a glass...

electric light using a wire filament heated by a current passing through it, until it glows

Balbu (pia: globu; kutoka Kiing. light bulb au light globe) ni kifaa cha kutolea nuru ikiwashwa yaani wakati umeme unapitishwa ndani yake. Hutumiwa kama sehemu ya kifaa kikubwa zaidi kama taa ya umeme. Balbu hufanya kazi yake kwa kipindi fulani tu baadaye inakwisha inahitaji kubadilishwa. Wakati wa kutoa nuru inashika joto na kwa balbu zenye uzi joto hii huwa na kiwango cha kumwumiza mtu anayeigusa. Ikibadilishwa ni lazima kuangalifu maana inawezekana kupigwa na umeme kama mtu anagusa soketi yaani upande wa taa inayoshika balbu. Muundo ya balbu yenye waya Balbu ya kutolea nuru iligunduliwa katika karne ya 19. Awali waya nyembamba ya platini iliwekwa ndani ya gimba la kioo lililoondolewa hewa yote; wakati umeme ulipitishwa kwenye waya hii ilipashwa joto hadi kutoa nuru. Balbu za kwanza hazikudumu muda mrefu kwa hadi Thomas Edison alifauli kuziboresha kwa kutumia nyaya za kaboni au aloi mbalimbali za metali na kujaza balbu kwa gesi kama arigoni au nitrojeni iliyozuia kuharibika haraka kwa nyaya za kung'aa. Tangu wakati wake taa za umeme zilianza kusambaa kote duniani zikabadilisha maisha ya watu...

An bumbilya (Ingles incandescent light bulb, incandescent lamp o incandescent light globe) iyo an ilaw na de-kuryente na may kable na filament na pigpapainit sagkod na iyan maglaad. An filament nakakapalaog sa sarong glass bulb na kinaagan nin vacuum o inert gas tanganing protektahan an filament kontra sa oxidation. An kuryente pigsusyplay sa filament sa paagi kan terminals o mga kable na embedded sa glass. An bulb socket nagtatao nin mechanical support asin electrical connections. An mga bumbilya pig-manufacture sa sarong mahiwas na manlaenlaen na sukol, light output, asin boltahe ratings, poon kaidtong 1.5 volts sagkod kan haros 300 volts. Dai sinda nangangaipo nin panluwas na regulating equipment, igwa nin hababang manufacturing costs, asin nagpupunsyon nin kasingmarhay kan alternating current o direct current. Bilang resulta, an bumbilya nagin lakop na piggagamit sa mga kaharongan asin commercial lighting, para sa portableng pagpailaw siring kan table lamps, headlamps kan kotse, asin flashlights, asin para sa dekoratibo asin advertising lighting. An mga bumbilya bakong episyenteng marhay kisa sa ibang klase nin de-kuryenteng...