•In1840,BritishscientistWarrendelaRueenclosedacoiledplatinumfilamentinavacuumtube（真空管）andpassedanelectriccurrentthroughit.•Althoughanefficientdesign,thecostoftheplatinummadeitimpracticalforcommercialuse.沃伦·德拉鲁(1815-1889)(英国天文学家)History（3）•In1841,Moleyns(莫林斯·wasgrantedthefirst英)...
Tube type incandescent light bulb and the original lighting equipment小田垣 徹
Name:T20 Edison Tube 25 Watt Incandescent Bulb;Color Temperature:1800-2300K;Size:20*110mm;Filament Model:Hairpin/Z-style/Squirrel Cage;Anchor NO.:8/11;Lifespan:2500-3500H;Package:One pc in a small box, then in one Carton;Material:Glass+brass+tungsten fil
Frederick de Moleyns made the first light bulb by putting a platinum filament inside an evacuated glass tube and passing electricity through the filament. Edison and Englishman Joseph Swan simultaneously produced bulbs that lasted longer than a few minutes. Edison's bulb was more successful because ...
Inside a CFL, an electric current is driven through a tube filled with argon and a small amount of mercury vapor. This creates invisible UV light, which excites a phosphor coating that reacts by emitting visible light. CFLs are efficient and long-lasting, but take time to ...
Strangely enough,this lamp-stabilized LM386 Wien bridge oscillatoris one place where an incandescent bulb makes an appearance. The Wien bridge itself goes back to the 1890s when it was developed for impedance measurements, and its use in the feedback circuits of vacuum tube oscillators dates back...
in enclosed fixtures, upside down, in downlight or recessed cans because of overheating, outside in cold weather. Worse yet, they can start house fires if put into a circuit with a dimmer. ALso, if you use them light a regular light bulb, turning them on and off, it shortens the ...
An incandescent light bulb works by heating a filament in the bulb. Fluorescent light is a bright light produced by electricity flowing through a tube filled with ionized gas. Fluorescent light bulbs are more energy-efficient than incandescent bulbs. They take time to reach their full brightness ...
Commercial development of an incandescent lamp was delayed until a filament could be made that would heat to incandescence without melting and until a satisfactory vacuum tube could be built. The mercury pump, invented in 1865, provided an adequate vacuum, and a satisfactory carbon-filament bulb ...
In the process of manufacturing an incandescent light bulb, as shown in FIGS. 1A to 1E, after a filament assembly20, together with an exhaust tube3, is inserted into a glass cylinder1, one end of which is hemispherical and closed and the other end of which is open (A), the open end...