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National Bunsen Burner Day

History ยท March 31

A day about the Bunsen burner, the small gas burner with an adjustable flame that has long been a fixture of school and laboratory benches.

National Bunsen Burner Day

National Bunsen Burner Day falls on Wednesday, March 31, 2027. That is 155 days away.

The Bunsen burner is a short metal tube on a heavy base that burns gas to make a steady, hot flame. Anyone who took a chemistry class probably remembers lighting one, a little nervously, while wearing goggles that never quite fit.

The clever part is the collar near the bottom. Turning it opens or closes small holes that let air mix with the gas before it burns. With the holes closed, the flame is yellow, floppy and sooty. Open them and it turns a crisp blue, with a pale inner cone, and burns much hotter. Learning to adjust that collar is one of the first hands-on skills many students pick up in a lab.

The burner is named for Robert Bunsen, a German chemist. It earned its place because it is simple, cheap and easy to control, which is exactly what a crowded classroom needs. Scientists have used it to heat liquids in beakers, sterilize wire loops in biology labs and watch how different substances color a flame.

Marking the day is mostly a matter of curiosity. Teachers sometimes use it as a reason to talk about flame and combustion, and former students tend to trade stories about the experiment that went slightly sideways. Plenty of modern labs now lean on hot plates and electric heaters, but the blue cone of a well-tuned Bunsen flame is still the image many people picture when they think of a science room.

Ways to celebrate

Dates

YearDate
2026Tuesday, March 31
2027Wednesday, March 31
2028Friday, March 31
2029Saturday, March 31
2030Sunday, March 31

All national days on March 31

Also on March 31

Categories: History days