Boiling Dilemma: Why Water in a Glass Won't Boil #teamwater

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Here’s a curious kitchen experiment that challenges our assumptions about boiling. Place a glass of water inside a pot of water, set the whole thing on a burner, and wait. The pot heats up, its water reaches a rolling boil... but the water inside the floating glass? Barely a ripple.

Isn’t water supposed to boil at 100°C? Technically yes, but temperature alone doesn’t trigger boiling. It’s not just about hitting the boiling point - it's about energy. Specifically, latent heat, the energy required to break molecular bonds and convert liquid water into steam.

Without direct contact with the burner, the glass is only surrounded by boiling water, and boiling water can’t rise above 100°C. So while the glass's water might hover just under the threshold, it lacks the energy boost needed for a full phase change.

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