The light bulb is useful because it lights up places!
The light bulb. The light bulb. The light bulb.
the light bulb!
No
it was the light bullb
When he patented Swan's invention of the light bulb.
Thomas Edison is best-known for the light bulb.
the light bulb
the light bulb
The useful energy in a light bulb is the light that it emits. When electricity flows through the filament of a light bulb, it produces light energy that we can see and use for illumination.
it's useful for light and safety.
Thomas Edison is best known for his invention the light bulb.
Because it lights up the world. Without it, other inventions also wouldn't be able to be invented, like our laptops.