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Oil lamps were invented in the early 1800s and 1900s. No one nows when oil lamps were invented. Their used for making light just like a light bulb
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In the 1870s the first water heater was invented. And it was invented by an Englishmen named Maughan. A water heater heats water.
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The light bulb was invented in 1879 and Thomas Eddison invented it. Light bulbs make light and electricity makes it work.
