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instead of utilizing a covering of the hands,
this small container straps around the wrist.
the band emits heat focused on the blood
vessels traveling into the hand in order to
warm the hands.
this has the benefit of not relying on
standard hand warming practices. it enables
the hands
to be warmed while not adding
girth to the fingers, or stiffening the joints. it
also allows for the utilization of touchpads
that require a conductive surface, and those
little keys for pda keyboards.
Related Idea -self endorsement
Warmed_20Brass_20Band
keep the fingers and lips warm [csea, Jun 14 2006]
[link]
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If my fingers feel cold It might well be because the temperature of the air is ten or twenty below that of my hand. It does not mean that the blood in my hand is that much colder but that my nerves register the cold. So I don't really think the problem could be solved by heating up the blood. |
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Also I think it is dangerous to heat up the blood, think what it will do to organisms in the blood, brrr. |
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Plus, there will be residual heat in the blood that leaves your hand so the warm blood goes through the entire body and you end up with warm blood in your brain. |
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[zeno] anything living in the blood
would have plenty of heat just from the
fact that the body temp is more than 98
degrees to begin with. |
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how would heating up the blood that is
going to the brain be bad? we're not
talking about extremes here and by the
time the blood reaches the brain from
the hands it is likely that any rise in
temp will be lost. |
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this also functions in a similar (albeit
opposite) purpose as the ears of a
rabbit in the desert. in the rabbit, hot
blood goes through the ears which have
a large surface area, cools off, and is
sent back through the body, cooling the
entire animal down. |
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these units heat the blood going into
the hands to compensate for the heat
lost due to the hand's surface area
coming in contact with the air. |
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it's just a basic electric coil heater, its
position and size is how it affects the
blood. the only way its heat is different
than that of a hot water bottle is how
where it cmes from. |
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"Also I think it is dangerous to heat up the
blood..." — zeno
[takes clothes off]
I didn't realise they were so hazardous. |
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If my anatomy serves me correctly (and it
may well not), the surface blood vessels
that you see are returning blood from the
extremities. The ones supplying blood are
deeper. |
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hence the heating of the entire wrist, both
vessels entering and leaving the hand. |
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