UK Karting - Notice Board (2-Stroke Karting) : Re: Sorry. Its not bo....ks. D I Y

Notice Board (2-Stroke Karting)

Re: Sorry. Its not bo....ks. D I Y
Posted by 'itpro' on 15 Nov 2014 @ 12:06

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itproJoined: August 2001
Total Posts: 6
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Hi Simon

My 'objection' is that it seems counter intuitive. Again, picking numbers at random: if we start with one beaker at 20 degrees Centigrade and another at 10 degrees, Mpemba suggests the 20 degree will freeze sooner. That's bizarre as the water that starts at 20 must pass through 10 as it cools. At that point, it should be in an identical state to the water which *started* at 10 degrees and thus, should pass through the same cooling 'regime' but delayed by the time it took to go from 20 to 10.

Obviously, if Mpemba is correct, that's NOT what happens. Something about the hotter starting conditions must remain with the water as it descends....... but what?

My suspicion is that it's the current flow within the water which would exist at 20 degrees but not so much at 10 degrees. It's just that the current flow continues (somehow) and that makes the cooler-starting-water better 'insulated'. Obviously, that's just a guess!

Ian

Message Thread:

WARNING all water cooled engines by 'dynamax' (06 Nov 2014 @ 10:01)

Re: WARNING all water cooled engines by 'alanrr' (06 Nov 2014 @ 10:27)

Re: WARNING all water cooled engines by 'OilyHerb' (06 Nov 2014 @ 20:02)

Re: WARNING all water cooled engines by 'alanrr' (06 Nov 2014 @ 23:16)

Re: WARNING all water cooled engines by 'PoppaAl' (07 Nov 2014 @ 7:57)

Re: WARNING all water cooled engines by 'SimonS' (07 Nov 2014 @ 10:43)

Windchill does not work like that. by 'JonWright' (07 Nov 2014 @ 11:07)

Re: Windchill does not work like that. by 'SimonS' (07 Nov 2014 @ 15:52)

Re: Windchill does not work like that. by 'alanrr' (07 Nov 2014 @ 18:49)

Re: Windchill does not work like that. by 'PaulMRotax' (07 Nov 2014 @ 20:47)

You must be missing Ian. by 'alanrr' (07 Nov 2014 @ 21:01)

Re: Windchill does not work like that. by 'dynamax' (07 Nov 2014 @ 23:54)

Re: Windchill does not work like that. by 'd-i-y71' (08 Nov 2014 @ 8:13)

D.I.Y.... you are wrong.... by 'itpro' (08 Nov 2014 @ 10:51)

Hello Ian, where did you spring from? by 'alanrr' (08 Nov 2014 @ 11:27)

Re: D.I.Y.... you could well be right by 'PaulMRotax' (08 Nov 2014 @ 13:47)

Sorry. That's bo....ks. by 'alanrr' (08 Nov 2014 @ 11:19)

Re: Sorry. That's bo....ks. by 'd-i-y71' (08 Nov 2014 @ 11:58)

Re: Sorry. That's bo....ks. by 'OilyHerb' (08 Nov 2014 @ 12:38)

Nah, you're ok diy, stay with us. nt by 'alanrr' (08 Nov 2014 @ 14:35)

Re: Sorry. That's bo....ks. D I Y by 'itpro' (09 Nov 2014 @ 0:46)

Re: Sorry. That's bo....ks. D I Y by 'd-i-y71' (10 Nov 2014 @ 8:39)

Re: Sorry. That's bo....ks. D I Y by 'BilandRacer9' (10 Nov 2014 @ 9:28)

Re: Sorry. That's bo....ks. D I Y by 'd-i-y71' (10 Nov 2014 @ 9:54)

Re: Sorry. That's bo....ks. D I Y by 'alanrr' (10 Nov 2014 @ 11:13)

Re: Sorry. Its not bo....ks. D I Y by 'dynamax' (12 Nov 2014 @ 18:43)

Re: Sorry. Its not bo....ks. D I Y by 'PaulMRotax' (12 Nov 2014 @ 22:20)

Re: Sorry. Its not bo....ks. D I Y by 'itpro' (13 Nov 2014 @ 1:13)

Re: Sorry. Its not bo....ks. D I Y by 'SimonS' (15 Nov 2014 @ 10:44)

Re: Sorry. Its not bo....ks. D I Y by 'itpro' << You are here!

Re: Sorry. Its not bo....ks. D I Y by 'd-i-y71' (15 Nov 2014 @ 14:52)

Re: Sorry. Its not bo....ks. D I Y by 'itpro' (15 Nov 2014 @ 17:12)

Re: Sorry. Its not bo....ks. D I Y by 'PaulMRotax' (15 Nov 2014 @ 20:52)

Re: Sorry. Its not bo....ks. D I Y by 'PaulMRotax' (15 Nov 2014 @ 17:13)

Re: Sorry. Its not bo....ks. D I Y by 'd-i-y71' (15 Nov 2014 @ 18:06)

Re: Sorry. Its not bo....ks. D I Y by 'PaulMRotax' (15 Nov 2014 @ 17:33)

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