Q:

On what date was the light bulb invented?

A:

Quick Answer

According to the US Department of Energy, Thomas Edison and his team had produced a functional incandescent light bulb by October 1879. Before this, British inventors had been experimenting with arc lamps. The first "constant electrical light" was invented in 1835, after which inventors continued to make small improvements until Edison's commercial breakthrough.

Continue Reading
On what date was the light bulb invented?
Credit: Tim Robberts The Image Bank Getty Images

Full Answer

The history of the electric light begins in 1802 with Humphry Davy and his arc lamp. This was simply a battery wired to a piece of carbon, which fluoresced brightly for a short period. In the following decades, many others experimented with light bulb designs, beginning with British scientist Warren de la Rue. He invented the first enclosed electric light, which was a platinum filament in a vacuum tube.

Edison is famous because he and his team produced the first commercially viable light bulb. They first filed a patent on October 14, 1878. Most improvements to light bulbs during that period and since have focused on the material used for the filament and the combination of gases within the bulb. Today, incandescent bulbs are losing support in favor of more energy efficient options, such as compact fluorescent bulbs and LEDs.

Learn more about Inventions

Related Questions

  • Q:

    When was the light bulb invented?

    A:

    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.

    Full Answer >
    Filed Under:
  • Q:

    What are some interesting facts about the light bulb?

    A:

    There are many interesting facts about the light bulb, one of which is that the first electric light bulb was first invented in 1802 by Humphrey Devy. This rudimentary bulb consisted of a piece of carbon that glowed when wires were connected from it to an electric battery. This was more than 75 years prior to Thomas Edison's introduction of the incandescent light bulb.

    Full Answer >
    Filed Under:
  • Q:

    Did Thomas Edison invent the light bulb?

    A:

    Thomas Edison did not invent the light bulb, but he did invent the first practical incandescent light. Edison's invention improved upon previous models that were not capable of being used in the home. Edison is also credited with inventing the first electrical system capable of powering a light bulb long-term.

    Full Answer >
    Filed Under:
  • Q:

    Who invented the first light bulb?

    A:

    Thomas Edison is credited with inventing the light bulb. He and his team worked on and tested over 3,000 bulbs, and in 1879, Edison was granted a patent for the first commercially successful light bulb.

    Full Answer >
    Filed Under:

Explore