Talks to Watch

Does Hot Water Freeze Faster Than Cold Water?

5M views · Feb 8, 2017 · 7:38 · 0 HN recommenders · 3 mentions · discussed 2020–2026

Sciencium examines the Mpemba effect, the claim that hot water freezes faster than cold water. It walks through experiments and a published paper questioning the effect.

Why Hacker News points people here: HN cites it as a concise rundown of why the Mpemba effect likely does not hold up.

“walking through all the experiments that demonstrate the effect does not in fact exist.”HN comment, 2022

What Hacker News said 3

Cites itaaron695Aug 2020

“Sciencium talks about it here if you want an ok run down and how it's not real”

Run-down of why the Mpemba effect isn't real

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We all get the Mpemba effect is totally fake right? You all own freezers so you can test it for yourself, it was found by a child making icecream so it will be easy! And if you're the !first! to put it on Youtube that'd be cool. Sciencium talks about it here if you want an ok run down and how it's not real - this video

in “The physics of why hot water sometimes freezes faster than cold water” · view on HN
Cites itsimonjgreenJun 2022

“walking through all the experiments that demonstrate the effect does not in fact exist.”

Walks through experiments showing hot-freezes-faster effect doesn't exist

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There was a video by Derek/Veritasium as few years ago explaining this and also walking through all the experiments that demonstrate the effect does not in fact exist. this video

in “Controversy continues over whether hot water freezes faster than cold” · view on HN
Cites itchotmatMar 2026

“The Mpemba Effect wasn't scientifically proven, and can be explained away with error in measurement.”

Mpemba effect not scientifically proven

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It's because you was wrong (or at least not correct). The Mpemba Effect wasn't scientifically proven, and can be explained away with error in measurement. this video