r/Damnthatsinteresting • u/Formal-Enthusiasm699 • 2d ago
High noon sun shining down on top of a tree
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u/0krizia 2d ago
so no leaves on top of the tree? strange tree...
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u/Equoniz 2d ago
Not necessarily. If you integrate a 3D density profile that’s in the shape of a thin shell (like the leaves around the outside of the “ball” at the top of this tree) along one direction (like when you cast a shadow), the resulting 2D density profile looks like a lightly filled dark ring…exactly like the shadow we see here.
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u/m1sta_bombastik 1d ago
Cool information, how do you know that?
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u/Equoniz 1d ago
I’m a physicist. One thing we do in my particular experiments is image 3D clouds of atoms on cameras, which are 2D. It effectively does the same thing (integrates a 3D density profile into a 2D density profile). If the atomic cloud is in the shape of a thin shell (can happen after a two bunches of atoms collide for instance), you can get a similar effect when imaging it.
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u/Fire_The_Editor 2d ago
In AZ this means it’s the middle of summer and 110 outside. I loathe overhead shadows
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u/AdWeekly2244 2d ago
They should spray paint it with shiny paint so it glows at noon
Edit, the shadow, I mean. Not the tree
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u/BlackberryBoy2_0 2d ago
This is r/mildlysatisfying