Hello again;
I was looking at an aerial photograph of a piece of property
with a surveyor.
We started to discuss when the photo was taken.
We could tell by the brown vegetation that it was probably
late summer here in So. California.
I also noticed a shadow cast from a telephone pole.
I think by measuring the height of the pole, the length and
angle of the shadow I might be able to figure out what day
of the year it was taken and the time. I would have to know
the latitude and longitude to do this. I knew the top of the
photo was north.
I started to think if I only knew the day and time the photo
was taken I might be able to determine the latitude and
longitude.
So I wonder if police ever use shadows in their investigations?
For example, a video of a terrorist holding a hostage. The
hostage holding a newspaper showing the date. They are
outside with visible shadows being cast. Could we figure out
where they are holding the hostage?
How about if the police say I ran a Redlight at 3pm on a
certain date and they have a photograph to prove it.
Maybe if they were wrong, I could prove my innocence by the
shadows cast by my car.
So guess the big question is, does anyone make practical use
of shadows?
thanks again;
brent
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