John Miles wrote:
Rex
your experience with the hot bar is quite common.
Sounds like a pretty reasonable manifestation of the Leidenfrost effect.
The water in contact with the hot end of the bar vaporizes, and the
resulting steam layer (which might be microscopic) does a good job
insulating the bar. There's nowhere else for the heat to radiate or conduct
to, except towards the cold end of the bar.
-- john, KE5FX
John,
You too never cease to impress by providing bits of knowledege I've
never heard about.
Leidenfrost effect. My first instinct was to dismember the German word,
which was a bad idea. Wiki told me about the relevant meaning.
Yes, that is a possibility about what I may have observed.
Let's see. I should produce the same efffect by jamming the hot end into
a tight insulating hole. Shouldn't be too hard to test subjectively.
My guess -- there is more than that involved. But just speculation so
far. I haven't even proved my initial observation.
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