How do fireflies make light?
Quick Answer
Fireflies produce light by a chemical reaction in their abdomen called bioluminescence. The light is created with very little heat, making it highly efficient.
The Full Story
Fireflies glow when luciferin reacts with oxygen, using the enzyme luciferase and energy from ATP, the molecule cells use for power. This chemical reaction produces cold light, meaning almost all the energy becomes visible light instead of heat. Different firefly species use different flash patterns to attract mates and recognize their own kind. The light is usually yellow-green, though some species emit other colours. Scientists study firefly chemistry because it is useful in biological research and medical testing.
Key Facts
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Suggested video title for this topic:
"The tiny chemical trick that lets insects glow at night"