Does Hot Water Freeze Faster Than Cold Water?

Sciencium0 HN recommenders · 2020–2026
5M views · explainer · dated · Uploaded 2017-02-08

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.

HN cites it as a concise rundown of why the Mpemba effect likely does not hold up.

Watch on YouTube

3 comments from Hacker News

@aaron6952020 · in “The physics of why hot water sometimes freezes faster than cold water”

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 - [VIDEO]

@simonjgreen2022 · in “Controversy continues over whether hot water freezes faster than cold”

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. [VIDEO]

@chotmat2026 · in “LLMs Predict My Coffee”

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. [VIDEO]