What Is the Name of the Phenomenon Where Hot Water Freezes Faster Than Cold?

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    Phenomena
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Discussion Overview

The discussion revolves around the phenomenon where hot water freezes faster than cold water under certain conditions, commonly referred to as the Mpemba effect. Participants explore the name of the effect, its pronunciation, and related thoughts on the topic.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant recalls the phenomenon but struggles to remember its name, suggesting it sounds African.
  • Another participant correctly identifies the phenomenon as the Mpemba effect.
  • There is a discussion about the permanence of forum threads, with one participant suggesting that threads should be deleted after serving their purpose, while another argues for their retention for future reference.
  • A participant inquires about the correct pronunciation of "Mpemba," expressing uncertainty and seeking clarification.
  • Different pronunciations are proposed, including "pem ba" (silent M) and "Mem ba" (silent P), with a participant continuing to seek confirmation on the correct version.
  • One participant mentions a thought experiment related to floating ice cubes and expresses interest in a mathematical link associated with the topic.

Areas of Agreement / Disagreement

Participants generally agree on the name of the phenomenon as the Mpemba effect, but there is no consensus on its pronunciation. The discussion also reflects differing views on the management of forum threads.

Contextual Notes

Participants express uncertainty regarding the pronunciation of "Mpemba," and there are multiple proposed variations without a definitive answer. The discussion also touches on the nature of forum threads and their purpose, indicating a lack of consensus on whether threads should be deleted after serving their purpose.

houlahound
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The one where hot liquids freeze quicker than cold liquids under certain conditions.

Tried to search it but can't recall the name, some African sounding name like Memoba effect.
 
Science news on Phys.org
Lol, I give myself a mark for being close.

Thanks for clarifying, admins might want to delete thread now as it served its purpose.

Apparently what I proposed are shape memory matresses used in hospitals...funny.
 
houlahound said:
Thanks for clarifying, admins might want to delete thread now as it served its purpose.

Threads don't get deleted for that
as you may have noticed, the various sections of the forum are full of 1000's of threads stretching back many years

They stay so that other people may find the info and also be helped :smile:

Even I learned something new ... hadn't heard of that effect before

Dave
 
Just to make this thread instructive for me too, how should I pronounce Mpemba?
 
Any way, who's going to know if your wrong?
 
I didn't ask whether my pronunciation is right or wrong, I asked how should I pronounce it. Of course its not easy to answer this question in text form, but I'm targeting people who know how to do that. One method is using a word with a known similar pronunciation.
 
Shyan said:
I asked how should I pronounce it.

searching around, the 2 common ways were

pem ba ( silent M)
Mem ba ( silent p)

still trying to find the correct one

EDIT ok a 3rd variation and hearing the guy say it


Ma pem baDave
 
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aaaah floating ice cubes freed from the surface of the container allowing more ice to form.elegant thought experiment explanation, anyone view his math link??

published?

good find.
 

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