Under certain conditions, hot water will freeze before cold.That has been known for thousands of years. Noboby yet as proven WHY it happens. Personally, I've seen it happen many times when fixing plumbing in houses with unheated crawl spaces. Most of the time, the hot water pipes freeze first, not the cold water pipes.
One situation where some people have tried to explain it is with the "Mpemba Effect."
It has been proven to happen over and over by scientists, but "why" it happens is still theory.
The latest theory I've heard about is the following:
"Now Jonathan Katz, a physicist at Washington University in St. Louis, has come up with a new hypothesis. Katz's explanation hinges on the presence of solutes. or dissolved substances, in water. "Hard" water contains more solutes than "soft" water does "
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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