It has to be the Leica lens that I used on the E-1. It wouldn't dare
not be perfect. ;-)
Jim Nichols
Tullahoma, TN USA
On 10/30/2015 7:36 PM, Chuck Norcutt wrote:
I counted every one of them in the picture. No sissy sampling for me.
It's exactly 50/50. You are invited to do your own counting if you
dispute my results. Yes, aerodynamics is probably a little different
in Jim's yard... probably affected by proximity to the airport.
Chuck Norcutt
On 10/29/2015 10:11 PM, Mike Gordon via olympus wrote:
Fifty Fifty Moose and Chuck write:
On 10/28/2015 6:46 PM, Chuck Norcutt wrote:
<<Well, it surely seems that 1/2 of them have fallen bottom side up.
FFM:
<<<<Odd that, coins seem to do the same thing. :-)
Are you both really so sure falling Sugar Maple leaves are
statistically equivalent to tossing a fair coin? Many aerodynamic
and structural variables affect their falling one side up or the other,
but they all start in one orientation perhaps skewing the
distribution. Haven't you observed some floating down in calm
conditions remaining red side up? A stiff breeze would likely
randomize the falling
but under calm conditions is it not reasonable to hypothesize a
slight preponderance of the red side up? So how to test: Perhaps
mark off a fixed area and count all the leaves in each orientation.
A back of the envelope 2X2 table (df thus=1) would dictate a chi
square of about 3.9 to assure p<0.05 testing for a 45/55
distribution vs 50/50. That would take roughly 400 leaves. Leaf
morphology changes a bit with water availability and especially light
and further changes with advancing cold. How that affects
aerodynamics and tumbling, I don't know.
http://www.sciencedirect.com/science/article/pii/S1002007109003013
I can see this morphing into a Ph.D. thesis or better yet a project
for a kid or grand kid.
Fifty-five, forty-five, Mike
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