The invention of the light bulb.

How long did the first light bulbs Edison created burn for? How long do they burn now?

600 hours, now they can burn up to 50,000 hours.

Besides light, what else do incandescent light bulbs emit?

Heat

What material did Edison use as filament in his original light bulb?

Japanese Bamboo

What was the first store in New York city to install incandescent light bulbs?

Macy's

What city did the Edison Electrical Light Company light up?

New York

What day did Edison first demonstrate his new design for the lightbulb?

New years eve

What other inventions is Edison known for?

The phonograph, the telegraph, and the motion picture camera.

What nickname did people give Edison?

The wizard of Menlo park

What is the purpose of the filament inside the bulb?

As it slowly burns, it provides the light source.

How did people light their homes before the invention of the light bulb?

Gas lighting or candles

Why was a vacuum needed inside the bulb?

So that the filament would not burn out too quickly.

Of all of Edison's inventions which one is most widely used today?

The light bulb

What were some problems with the eary designs of the incandescent lamps?

They lasted for a short time and required too much energy.

What is the bulb in a light bulb made of?

Thin glass

What was the purpose of the bulb in the light bulb?

To create a vacuum

In what year did Thomas Edison invent his version of the incandescent light bulb?

1879

Name one of the many inventors who first developed the idea of an incandescent light?

Humphry Davy, James Bowman Lindsay, Moses G. Farmer, William E. Sawyer, Joseph Swan, and Heinrich Göbel.

What did Edison contribute to the light bulb?

He improved the design to create a longer lasting and brighter incandescent light bulb.

What was the name of the company Edison created following the invention of the light bulb?

The Edison Electrical Light Company

Name 3 other inventions that have been as innovative as the light bulb?

The internet, printing press, telephone, television, cars, airplanes, camera, computer.