Short Stuff: The Mpemba Effect
Stuff You Should Know
iHeartPodcasts
4.6 • 79.3K Ratings
🗓️ 3 September 2025
⏱️ 14 minutes
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Summary
Why does water seem to freeze faster when it starts out warmer?
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Transcript
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| 0:00.0 | This is an I-Heart podcast. |
| 0:08.3 | Hey, and welcome to the short stuff. |
| 0:10.0 | Josh here, Chuck here, giddy up. |
| 0:13.1 | Yeah, we're going to tell you in part about a remarkable young teenager in Tanzania in the 1960s. |
| 0:19.6 | And his name was Arasto Impimba. |
| 0:22.4 | Is it Impema? |
| 0:25.5 | It's impimpa. |
| 0:26.8 | Okay. |
| 0:27.7 | The reason why we're talking about Arasto Impa today is because he was a pretty |
| 0:32.5 | remarkable kid. |
| 0:33.6 | He stumbled upon, I guess you could say, rediscovered a concept that just baffles physicists |
| 0:41.1 | today because it doesn't make any sense. It may violate the second law of thermodynamics. |
| 0:48.1 | And it ended up being named after him because he was a persistent little cuss who made this |
| 0:53.8 | observation and just kept going |
| 0:55.7 | until he finally got the ear of somebody who could help him try to figure it out. |
| 1:00.0 | You know, the first law of thermodynamics is you don't talk about thermodynamics. |
| 1:03.8 | Very nice. |
| 1:05.1 | I was thinking about that movie the other day. |
| 1:07.1 | I was like, I used to be so into that. |
| 1:08.9 | Same. |
| 1:09.4 | So juvenile. |
| 1:10.6 | I know. I almost put it on the other day as a was like, I used to be so into that. And now it's so juvenile. I know. I almost put it on |
... |
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