Science Art: Bunsen Burner Flame Types, by Artura Jana Fijalkowski.

Bunsen_burner_flame_types
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It’s Beltane today, May Day, a day traditionally celebrated with bonfires. Here are some smaller flames, but no less fiery.

This is a photo illustrating how, as Wikimedia Commons explains, “different flame types of a Bunsen burner depend on oxygen supply. ”

And also:

Different flame types of Bunsen burner depending on air flow through the valve.

1. air valve closed

2. air valve nearly fully closed

3. air valve semi-opened

4. air valve maximally opened

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