Lighting effect of electric current; Filament lamp and Fluorescent lamp - Online Science Notes
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Vintage Edison Squirrel Cage Teardrop filament bulb
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Filament Lamps
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Vintage Edison Spherical spiral filament bulb 125mm
Incandescent lamps, explained by RP Photonics Encyclopedia; thermal emission, luminous efficacy, energy efficiency
Bumping into new technologies: Hey, that's not what a light bulb is supposed to look like! | National Museum of American History
Old-fashioned light bulbs could be set for comeback after 'light recycling' breakthrough | The Independent | The Independent
Estimation of the filament temperature of an incandescent lamp from an energy balance in steady-state conditions | SpringerLink
Airam LED Globe G95 filament bulb 4W E27 470lm, dimmable | Finnish Design Shop
E27 LED Lamp Dimmable Filament Bulb E14 220V Gold 1W 3W 4W 6W 8W E12 E26 110V Edison Retro LED Light Bulbs 2200K G40 String Bulb|led filament bulb| filament bulbled filament - AliExpress
LED filament - Wikipedia
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Electrical filament - Simple English Wikipedia, the free encyclopedia
