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A comment on U.S. military shoots down suspected Chinese surveillance balloon. Parent comment

Re:U.S. military shoots down suspected Chinese surveillance ... by californical on Saturday February 04, 2023 @10:46PM (#34661615)
4x as big, since we see in two dimensions — you can judge length & height (but not depth).

So if it appears the same size but twice as far away, the the length and height are each 2x. So that would make it the size of ~4 airplanes

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Re:U.S. military shoots down suspected Chinese surveillance ... by Miserlou57 on Sunday February 05, 2023 @03:42AM (#34663098)
Not super relevant but I find this to be true when spotting a 747/757/767 vs say a 737
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Re:U.S. military shoots down suspected Chinese surveillance ... by d0mine on Sunday February 05, 2023 @12:44PM (#34666873)
the area is 4x but the diameter is just 2x here.
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Re:U.S. military shoots down suspected Chinese surveillance ... by ant6n on Sunday February 05, 2023 @05:44PM (#34670543)
Isn’t the object three-dimensional?
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