From Candle Flame to Light Bulb
Think about what happens when the sun goes down. Today you flip a switch. Long ago, evenings looked very different.
For a very long time, the main light inside a home was a fire in the fireplace. It gave off light, but it also gave off smoke, and it could not be carried easily from room to room.
Later, people made candles. Candles were made from wax or from animal fat, and each one burned down and had to be replaced. A candle gave only a small, flickering glow, so families often went to bed soon after dark.
Then came oil lamps, which burned oil in a container with a wick. They were brighter than candles and could be carried. In some towns, gas lamps were later lit along city streets.
In the late 1800s, inventors made electric light bulbs that were safe and cheap enough to use at home. A bulb needed no flame to burn and no oil to pour. Once houses were wired for electricity, people could read, cook and play games long after dark.