Other forms: bunsen burners
A bunsen burner is a gas heater used in many laboratories. If this word doesn't give you flashbacks to high school chemistry class, then we don't know what will.
About 200 years ago, German chemist Robert Bunsen was born — no doubt unaware that his surname would eventually become inseparable from a common piece of laboratory equipment that he would later invent: the bunsen burner. Its great advantage over earlier burners was the air valve that allows variable amounts of air to be mixed with the fuel. If you've ever taken a chemistry class or worked in a laboratory, you probably used a bunsen burner to create a chemical reaction.