rain Sensors, was Infra-red Opto help
Russell McMahon email (remove spam text)
> > FWIW - a raindrop has a terminal velocity of a few tens of kilometres
> > second. Actual velocity depends on drop size but in free fall is never
> > vast.
> Surely tens of *meters* rather than kilometers?
Whoops - yes
Tens of kilometres per hour that should have said.
Tens of kilometres per second gets you into space :-)
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