A type A light bulb is the typical incandescent light bulb. It has a round top and a tapered bottom that allows it to be screwed into most light fixtures, and it can come in a brightness of 40, 60, 75 or 100 watts, although those wattages are being phased out in favor o...
A three-way light bulb has two different filaments inside, each with different wattage for the low and medium light settings, which combine for the bright setting. For instance, a 30-watt filament for low and a 70-watt filament for medium combine for a 100-watt light.
Thomas Alva Edison is often credited with inventing the lightbulb, but several other inventors created their own versions before Edison introduced his to the market. Edison gets the credit because his lightbulb was the first practical bulb that also had an electrical sy...
An incandescent light bulb is made out of glass and metal. It is filled with an inert gas such as argon. This gas helps to slow down the deterioration of the metal filament.
Thomas Edison is typically credited with inventing the light bulb in 1879. However, he was not the only person in history to have contributed to the development of the modern incandescent light bulb.
Argon is a commonly used gas used to fill incandescent light bulbs. It increases bulb life by preventing the tungsten filaments from deteriorating too quickly. Other gases such as helium, neon, nitrogen and krypton are also used in lighting.
The first light bulb patent was filed in 1841 by Frederick DeMoleyns. American J. W. Starr patented his design in 1845. By 1880, American Thomas Edison had created his own light bulb using carbonized bamboo as the filament.