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Larik 1: [[Gambar:Gluehbirne_2_db.jpg\|right\|thumb\|200px\|Lampu pijar dan filamennya yang sedang menyala.]] '''Lampu bohlam''' inggih punika sumbèr [[cahya]] damèlan ingkang kaasilakèn ngèlampahi penyaluran [[arus listrik]] ngèlampahi [[filamen]] ingkang lajèngipun memanas lan ngasilakèn cahya.<ref name="internet_lb_book_1">(en){{cite web \| title=The Great Internet Light Bulb Book, Part I \| url=http://members.misty.com/don/bulb1.html \| last=Klipstein \| first=Donald L. \| year=2006 \| accessdate=2010-04-10}}</ref> Kaca ingkang nyelubungi filamen panas ~~kasebut~~mau nghalangi udara kanggé gegayutan kaliyanipun pramila filamen boten badhé kalangsungaken rusak sebab [[oksidasi\|teroksidasi]].<ref name="enotes">(en){{cite web \| title="Light Bulb." How Products are Made \| publisher=eNotes.com \| url=http://www.enotes.com/how-products-encyclopedia/light-bulb \| author=Gale Cengage \| coauthors=Stacey L. Blachford \| year=2006 \| accessdate=2010-04-23}}</ref> Lampu pijar dipunpasaraken ing pinten-pinten macem bentuk<ref name="buylighting">(en){{cite web \| title=buylighting.com: Incandescent Light Bulbs \| url=http://www.buylighting.com/Incandescent-Light-Bulbs-s/165.htm \| accessdate=2010-04-23}}</ref> lan kasedia kanggé tegangan ([[voltase]]) kerja ingkang bervariasi saking wiwit 1,25 volt<ref>(en){{cite web \| title=Round MES Type (E10) : Small Bulbs & Lamps : Maplin \| url=http://www.maplin.co.uk/Module.aspx?ModuleNo=1977 \| accessdate=2010-04-23}}</ref> hingga 300 volt.<ref>(en){{cite web \| title=GE 16317 50A19 at eLightBulbs.com \| url=http://www.elightbulbs.com/GE-16317-50A19-A19-Light-Bulb \| accessdate=2010-04-23}}</ref> Energi [[listrik]] ingkang dipunbetahaken lampu pijar kanggé ngasilaken cahya ingkang terang langkung ageng dipunbandingaken kaliyan sumber cahya ndamel sanèsipun kaliyan [[lampu pendar]] lan [[diode cahya]], mila kanthi bertahap ing pinten-pinten nagara peredaran lampu pijar wiwit dipunwatisi.<ref>(en) {{cite web \| title=LED Efficiency Comparison \| language=Inggris \| url=http://www.ecoledlighting.com/docs/LEDEfficiencyComparison.pdf \| publisher=EcoLEDLighting.com \| filetype=pdf \| accessdate=2010-05-02}}</ref><ref name="nagara_pembatasan_lampu">(en){{cite news\|url=http://www.dailymail.co.uk/news/article-1107290/Revolt-Robbed-right-buy-traditional-light-bulbs-millions-clearing-shelves-supplies.html\|title=Revolt! Robbed of their right to buy traditional light bulbs, millions are clearing shelves of last supplies\|last=Derbyshire\|first=David\|date=7 January 2009\|publisher=The Daily Mail\|accessdate=2010-04-10}} Untuk pratélan nagara lihat pada pérangan "What Happens Overseas?"</ref>

Lampu bohlam: Béda antara owahan