After doing some quick tests, I determined that 300 mL of water will become "superheated" somewhere between 2 mins and 2 mins 30 seconds in a microwave set on "high." Your results may vary.
Anyone wishing to continue work on this is advised to use plastic containers.
(Note to self: Do NOT put room-temperature water in a glass which a moment ago contained boiling-hot water.)
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Posted by Baloo (Member # 5) on :
Well, it's getting too warm to do this in the Northern hemisphere, but you can also do neat stuff with boiling hot water when the ambient temperature is near zero fahrenheit (approximately -15 C). Heat a cup (or mug) of water to near boiling. Take it outside and throw the hot water into the air. The water flash-freezes into ice crystals, looking for all the world like white smoke.
I saw a bit of video on some science documentary regarding one of those cheerful Antarctic outposts: as a demonstration of the fun-filled climate situation down there, one of the happy residents took a pot of boiling, scalding-hot water off the range top and hurried out into the dark night, throwing the boiling water into the air-----none of it reached the snow.