Re: [Phys-L] raining
Assuming a temporally and spatially constant/uniform density of rain water in
the air (and an upright posture) then the amount of rain striking your head and
shoulders (and any surface with a horizontal projection) from above will be
proportional to the time you spend out in the rain. But the amount of rain
striking your front side (and any surface with a front facing vertical
projection) will be constant independent of time (within reason) since that
amount of water is just the constant amount of rain in the volume of space you
must sweep through on your way through the rain laden air to get to where you
are going. Thus, your front side gets just as wet no matter how fast you move
through the rain. But your head and shoulders will get the least wet if the
pass through the rainy region as fast as possible.
David Bowman
-------- Original message --------
From: Anthony Lapinski via Phys-l <phys-l@mail.phys-l.org>
Date: 12/19/23 10:33 PM (GMT-05:00)
To: John Denker via Phys-l <phys-l@mail.phys-l.org>
Cc: Anthony Lapinski <alapinski@pds.org>
Subject: [Phys-L] raining
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Trying to get a "scientific" answer to the question: will you get more wet
if you walk or run in the rain? Conflicting results/videos online, and some
consider wind and leaning bodies. I just want the basic parameter that the
rain is falling straight down and the person is moving "upright."
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