How Thomas Edison Created the Light Bulb

hanging light bulb

Thomas Edison created a vacuum inside the bulb by pumping out all the air.

Thomas Edison was the man who invented the light bulb. To start, he formulated a vacuum by pumping out all of the air inside the bulb. This allowed the filament that would be placed inside it to glow brightly and made it possible for light to be produced.

Thomas Edison wearing a suit and bowtie presenting a large scale model of his Lightbulb in black and white.
Thomas Edison with the Light Bulb

Then he threaded two wires into the glass bulb, attaching them to a metal base at the bottom.

The second step was to attach the wires to the filament. The filament is what gives off light when electricity passes through it. Edison attached one wire to a metal base at the bottom of the bulb and another wire to a metal base at the top of it. He then threaded these two wires into hot glue, which he used as insulation so that they wouldn’t get damaged by contact with anything else inside his light bulb.

He took a strip of carbon, a material that conducts electricity, and wrapped it around a thin filament of paper or fabric coated with either tin or tungsten.

You may remember from school that the filament is a thin wire inside of the bulb. It glows and produces light when connected to an electrical current.

Finally, Edison placed the filament inside the glass envelope and screwed on the metal bottom cap.

After all of this, the final step was to take out the carbon-coated wire and place it inside a glass tube. This was done by melting some wax at the top of a metal tube, and then pouring it down onto where you wanted your filament to be positioned. After that, Edison would twist together two pieces of iron wire into an ā€œLā€ shape and solder them onto the ends of his metal rod so that it could be inserted into either end of his glass tube. Finally, he placed this metal structure inside one end of his bulb and placed a small metal cap with holes punched in it on top so that air could escape from inside as well as oxygen enter through those same holes to keep things burning hot enough for light production!

A lightbulb is pretty simple when you break it down to its parts.

The light bulb is a remarkable example of the way simple ideas can be expanded upon. The individual parts of the light bulb are easy to understand, but their combined effect has changed our world in ways we cannot yet fully comprehend.

As you examine your light bulb, note that it contains a filament and a glass enclosure. The filament is made out of tungsten or carbonized cotton that glows when electricity passes through it. The glass enclosure protects the filament from outside factors such as dust and moisture which might cause it to burn out faster than necessary.

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