The discussion centers on the phenomenon of throwing hot water into the air at -45°F and the resulting behavior of the water. Participants confirm that the hot water evaporates rapidly before freezing into tiny ice crystals due to increased surface area and cooling rates. The conversation also references the Mpemba effect, where hot water can freeze faster than cold water under certain conditions. This effect is attributed to various factors, including molecular activity and environmental interactions.
PREREQUISITESAnyone interested in physics, particularly those studying thermodynamics, meteorology, or physical chemistry, will benefit from this discussion.
cragar said:
ok so this guy throws up a cup of hot water at like 45 below zero F. And I am not sure what exactly is going on . Does the water first evaporate really fast and then freeze into tiny ice crystals. When its really cold outside the humidity is really low, so does stuff evaporate really quickly.
James Leighe said:I would like to see the same thing with cold water to see if there is any difference.
If you put a cup of hot water and a cup of cold water in a freezer the cup with hot water will freeze first... (I don't remember why exactly) So there are some hard to guess effects that can happen.
G037H3 said:heat=level of molecular activity
hot things react more with their environment