On the other hand, we just might.
Posted on 11/30/2017 7:46:22 PM PST by sparklite2
Now that’s something to ponder.
All this writing about time and arrows made me want to experiment.
But, where do you find arrows at this time of night?
In the car!
The turn signal arrows by the speedometer.
So, I took the car out and switched on the right turn arrow.
I went forward in time.
Then, I switched on the left turn arrow.
I went back in time.
I turned on the emergency flashers.
I tore open the time/space continuum.
That’s what I told the cops anyway.
It’s got a good beat and you can dance to it. I give it an 80, Dick.
Yep, I’m that old.
Oh, not that I think cats shouldn’t own yachts and want to read about them.
I mean, lots of them own catamarans.
I laughed until I coughed.
Thank you for the former,
dang you for the latter.
;)
Is this not like returning to the beginning of an audio or video file and playing it back again.
Remembering Steven Wright....
I got home last night and by mistake
stuck my car key into the door lock.
I gave it a turn and in started right up!
So I drove the house around for a
while until a cop pulled me over.
He asked me, “Where do you live?”
And I said, “Right here.”
I think it’s more like hot water freezing faster than cold war, a notion I had heard once and was ridiculed for repeating. Well, guess what...? Hot water can freeze faster than cold water.
Magnificent!
This can only be a description of a case where greater evaporation occurs in the hot water, until it is reduced to a smaller amount of water than the original "cold water" at the same temperature, and so freezes faster due to its lesser volume.
So the claim rests on rhetorical ambiguity.
i can’;t take credit for that pun- saw it one day and never forgot it lol-
got pulled over going 100 in a 50 mph zone- I told the policeman “But officer, I was only going to be out for 1/2 an hour”
[[Hot water can freeze faster than cold water.]]
Well yeah- if you put the hot water i nthe freezer and leave the cold water at room temp :)
The phenomenon of hot water freezing faster than cold water is known as the Mpemba effect, named after Erasto Mpemba, a Tanzanian student who in 1963 was making ice cream as part of a school project.
The students were meant to boil a mixture of cream and sugar, let it cool down, and then put it in the freezer.
Worried about getting a spot in the freezer, Mpemba instead put his mixture in while it was still scorching hot. But after 1.5 hours, his mixture had frozen, while his classmates’ mixtures had not.
Intrigued by this phenomenon, he went on to work with physics professor Denis Osborne, and together they were able to replicate the findings and publish a paper in 1969 showing that warm water freezes faster than cold water.
https://www.sciencealert.com/does-hot-water-really-freeze-faster-than-cold-water
see 54
I knew it froze faster- didn’t know why though- thanks for thel ink
Well, the article refers to a MIXTURE of various components, so the description is instantly rendered irrelevant to the claim of hot WATER vis a vis cold WATER.
Take credit for remembering. Not everyone - like me - would have.
The Mpemba effect is the observation that warm water freezes more quickly than cold water. The effect has been measured on many occasions with many explanations put forward. One idea is that warm containers make better thermal contact with a refrigerator and so conduct heat more efficiently. Hence the faster freezing. Another is that warm water evaporates rapidly and since this is an endothermic process, it cools the water making it freeze more quickly.
None of these explanations are entirely convincing, which is why the true explanation is still up for grabs.
Since I’m not conversant in the physics, all I can do is google-fu, and there seems to be consensus that the phenomenon occurs, but no one knows why.
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