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Assume a hemispherical cow.
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who had taken the seat before me in the bus? Has that person smeared his sweat 'etc' on the seat?
which is the cleanest part of the pillar in the bus I can hold on to?
wear the germ viewer glass to know it! it throws a UV light or whatever, to reveal the truth
a purple patch means its sweat, a
green patch says its saliva...so on.
Muppet labs version
[not_morrison_rm, Jul 18 2013]
Invader Zim version
[spidermother, Jul 18 2013]
||Excellent idea apart from the not working bit. UV
light won't reveal normal levels of contaminants,
alas, unless you spray everything with the relevant
||Really a germ colony viewer, not individual portraits.
||Great Muppet link [n_m_rm]!
||So market the device with a multi-chambered relevant stains sprayer free!. That way you can bend over the empty subway seat and spray it before shining your UV goggles at it.
||Since it the same stuff in urine, saliva, blood and
semen - phosphorous - that fluoresces under UV
light. So I'd guess a simple UV light wouldn't be
enought - you'd have to do some tricky stuff,
spectrometers and a heads up computer display -
to get different colors for different kinds of
||Actually seeing germs would be pretty tricky. To
get them to fluoresce or glow, you've gotta
chemically bind florescent proteins and the like to
them. Getting just specific germs rather than
practically everything to fluoresce might take
some sort of gene tagging tech.
||Sounds cool, but hard, to me.