Have you heard of "The Mpemba Effect"?
Tommy
2012/07/31 13:38:03
Calling all budding Physicists!
Scientists have been offering a prize of £1000 ($1,566) for an answer to the question:
Why does hot water freeze more quickly than cold?
The article was contained in British Newspaper The Daily Mail and a link to the page is shown below.
Unfortunately the closing date was July 30th, 2012, but that does not stop you from having a go!
Scientists have been offering a prize of £1000 ($1,566) for an answer to the question:
Why does hot water freeze more quickly than cold?
The article was contained in British Newspaper The Daily Mail and a link to the page is shown below.
Unfortunately the closing date was July 30th, 2012, but that does not stop you from having a go!
Read More: http://goo.gl/9VOon
Top Opinion
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Dave Sawyer ♥ Child of God ♥ 2012/08/10 16:20:35
+3Because water expands when it freezes, and in hot water, the molecules are already farther apart, so freezing requires less energy to be transferred.
But if you happened to spray hot water into frigid air, you would get the effect, and probably snow.
As said above water can exist in a 'supercooled' state until it's shocked, has anyone explained that? May be connected with Mpemba.
[Digression] The Enthalpy of Vaporization explains why hot steams causes such bad burns, when it condenses on the skin, it releases (even more than melting) huge amount of latent heat.
[Re·Integrate] The weather phenomenon of Sleet (or freezing rain) is the raindrops have supercooled below 0° but when they land on something, the shock of impact causes them to glaze whatever they hit. Looks like some sort "Thermal Inertia Effect" is working here.
http://itotd.com/articles/521...
Thanks for your submission. :-)
Perhaps there's a 'Momentum Effect' that lags a bit behind the cooling of the fluid.
Water also is also densest at ~3.7°C & the reason why Ice floats is that it's less dense (unlike almost all other material, Type Metal an exception).
This is because of the Hydrogen Bond. The hydrides of Oxygen's neighbors on the Periodic table (N, C, F, Si, P, S, Cl, Ge, As, Se, Br, Sn, Sb, Te, i, Pb & Bi) are gases at Room Temperature (20°C/68°F) because the H-bond is too weak or doesn't bind as well to keep these substances as liquids there.
There are some experiments that, given access to a lab and equipment, I'd love to try out. I'd like to submerse accurate thermometers in two beakers of water, one hot (say 60c) and one at room temp (say 20c). The readouts for both would be on a computer screen and the beakers placed in a deep freeze. I would record both readings say every minute and observe the possibility of the momentum effect taking place. I would be very surprised if this has not already been tried in some shape or form since the '60s!
Thanks again - first serious answer!
Do not move, it may disturb settings - Engineers
attached below was:
Do not look at, it may change Quantum States - Physicists
After seeing this, I came up with a hypothesis for "A Watched Pot Never Boils" using Quantum Principles. When one looks at such a pot, "spooky action" occurs & the cerebral-spinal fliud in the viewer's head instead goes exothermic.
And a morbid fear of juice for about a week.
Do you have an aversion to Cottage Cheese?
The symptoms are often described as a clinical triad of abnormalities:
Cognitive effects: headache, agitation, hypomania, mental confusion, hallucinations, coma
Autonomic effects: shivering, sweating, hyperthermia, hypertension, tachycardia, nausea, diarrhea.
Somatic effects: myoclonus (muscle twitching), hyperreflexia (manifested by clonus), tremor.
Many MAOIs inhibit monoamine oxidase irreversibly, so that the enzyme cannot function until it has been replaced by the body, which can take at least four weeks.
Does this sound close?
But this happened in 2006, I was not on pills and Mao was the ruler of china until 1972 not the cause of my stomach ache.
(Monoamine oxidase)
I am glad that the dictator of china didn't come for a visit then.
Although that would have made the report I did a couple days ago quite easy...
For Society - http://blog.humangivens.com/2...
For Organizations - http://www.lornemitchell.com/...
Original Psychology (nerdy) - http://www.caetextia.com/
for small groups, check out any Sit-Com, it's exaggerated,
but in the Real World, it's nothing to laugh about.
Also, you're online when you're here in the Soda Headlands, can't you push a few keys or clicks & summon Google?
I'd appreciate the clarification. :-)
A few entangled threads ("Inception" & "Premonition" makes sense to me):
The MAOI reference was to your comment about mixing milk & juice
The Caetextia was in reference to dude (mindlessly) confusing MAO with the late Chairman, just attached to links to read at your leisure, if so desired, but may elucidate why our Society seems Hellbent to dive down the toilet.
My Mind (et al.) is a Hive of activity. Being Bless/Cursed with Asperger's (check out "Mozart & the Whale") my Thought Processes are a like a
"Byzantine Machiavellian Rube Goldberg Gordian Knot" & I have a "Complicated Complicating Complex with Complications",
if only Carl Jung (he coined the term Complex) were still alive.
but being a former Cub & Boy Scout, I'm fairly good with knots,
I'm also a Jungian. Follow Kierkegaard too.
You reference to mixing milk & juice sent me off on a tangent from the Mpemba Effect (being human, we ALL digress but I'm more prone)).
The word play with MAO sent me into InfoMania Mode which pruduced the deluge of references to Caetextia (at least I only sent the links, others like me would post the entire articles(seen them on SH, since unfriended & blocked), so I've got some Restraint.
I'm not DICTATING that you read the article (again Caetextia) but just suggesting you peruse them on your time, the two upper ones may elucidate why our Society seems to be Hell-Bent on creating more problems rather than solving them (some Theology [I'm a Deist] can explain that, another discussion for later).
I've Realized that I'm some sort of (undiagnosed, had 3 three assessments over the last 2 years, all different, the Shrinks are clueless, or also afflicted) Asperger's (capacious memories) coupled with Complex PTSD which when done to US, leaves us with "Hyperthymesia" a "Phenomenon"al Auto-Biographical memory.
I'm quite aware that my Thought Processes operates much like a
"Byzantine Machiavellian Rube Golberg Gordian Knot" (Vista?)
but being a former Cub & Boy Scout, I know a bit about knots. I also made it through the...
You reference to mixing milk & juice sent me off on a tangent from the Mpemba Effect (being human, we ALL digress but I'm more prone)).
The word play with MAO sent me into InfoMania Mode which pruduced the deluge of references to Caetextia (at least I only sent the links, others like me would post the entire articles(seen them on SH, since unfriended & blocked), so I've got some Restraint.
I'm not DICTATING that you read the article (again Caetextia) but just suggesting you peruse them on your time, the two upper ones may elucidate why our Society seems to be Hell-Bent on creating more problems rather than solving them (some Theology [I'm a Deist] can explain that, another discussion for later).
I've Realized that I'm some sort of (undiagnosed, had 3 three assessments over the last 2 years, all different, the Shrinks are clueless, or also afflicted) Asperger's (capacious memories) coupled with Complex PTSD which when done to US, leaves us with "Hyperthymesia" a "Phenomenon"al Auto-Biographical memory.
I'm quite aware that my Thought Processes operates much like a
"Byzantine Machiavellian Rube Golberg Gordian Knot" (Vista?)
but being a former Cub & Boy Scout, I know a bit about knots. I also made it through the Canadian Armed Forces Militia Boot Camp despite this Altitude I'm "Possessed" with. I'm also studying Carl Jung to better understand myself. Just over 2 years ago I was a reticent miserable depressed 'stick in the mud' but I had one Mutha of a "Spiritual Awakening" and now damned to be an
"Obstreperous Irrepressible Vociferous Orifice" (can be anything)
but still mired in the muck but I'm now making tsunamis with it. If only
Jung (suspected Aspie too) was still alive, he coined the term Complex. He'd like me to examine my head. I make an affirmation: I have a…
"Complicated Complicating Complex with Complications"
(wow wow)
(Gene Roddenberry [May He Drift in Space] was one of US!):
"I (now) know how I think (& others) better
(but imperfectly) than most others know themselves"
"Benny & Joon" (Depp) alludes to it (eccentricity) &
"Mozart & the Whale" (just saw last night) NAILS IT!!
I like to stop this thread, you?
MAOI's are found in a bunch of different foods so there could be a "last straw" effect. It's also found in Red Wine which may be why Wine & Cheese parties are popular, apparently with little risk, you just get a subtle 'buzz'.