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2. Edison light bulb - Wikipedia

   en.wikipedia.org/wiki/Edison_light_bulb

   In 1904 a tungsten filament was invented by Austro-Hungarians Alexander Just and Franjo Hanaman, [4] and was more efficient and longer-lasting than the carbonized bamboo filament used previously. [5] The introduction of a neutral gas to the glass envelope (or bulb) also helped to improve the lifespan and brightness of the bulb. [5]

3. Centennial Light - Wikipedia

   en.wikipedia.org/wiki/Centennial_Light

   The bulb was made by hand, using a carbon filament (of greater thickness and strength than the tungsten filaments used in most modern lightbulbs) along with brass and glass components of high quality. The low wattage (originally 60 watts, now approximately four) and high nitrogen atmosphere inside the bulb have also contributed to its longevity.

4. Incandescent light bulb - Wikipedia

   en.wikipedia.org/wiki/Incandescent_light_bulb

   The filament in a tungsten light bulb is not easy to break when the bulb is cold, but filaments are more vulnerable when they are hot because the incandescent metal is less rigid. An impact on the outside of the bulb may cause the filament to break or experience a surge in electric current that causes part of it to melt or vaporize.

5. Longest-lasting light bulbs - Wikipedia

   en.wikipedia.org/wiki/Longest-lasting_light_bulbs

   The fire department claims that the bulb is at least 124 years old, having been installed in 1901, and has only been turned off a handful of times. The bulb has been noted by The Guinness Book of World Records , Ripley's Believe It or Not! , and General Electric as being the world's longest-lasting light bulb.

6. Palace Theater Light - Wikipedia

   en.wikipedia.org/wiki/Palace_Theater_Light

   The Palace Theater Light, also known as the Eternal Light, [1] is an incandescent light bulb recognized by the Guinness Book of World Records as being the second oldest continuously operating light bulb in the world behind the Centennial Light. It is kept at the Stockyards Museum in Fort Worth, Texas.

7. Phase-out of incandescent light bulbs - Wikipedia

   en.wikipedia.org/wiki/Phase-out_of_incandescent...

   Announced in 2011 China has banned imports and sales of certain incandescent light bulbs since October 2012 to encourage the use of alternative lighting sources such as light-emitting diodes (LEDs), with a 5-year plan of phasing-out incandescent light bulbs over 100 watts starting 1 October 2012, and gradually extend the ban to those over 15 ...