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a physics puzzle
Nov. 28th, 2008 11:43 pmSo last night after Thanksgiving dinner, we went to see "Bolt". Which was a lot of fun, and heart-warming, and all, and gorgeous computer graphics and all, but that's for another post.
It's also in 3-D, which is usually accomplished by showing slightly different pictures to the left and right eyes to create parallax. Now, a few decades ago, this was done with one picture in red and the other in green; everybody wore glasses that were red on one side and green on the other (which puts severe limits on the use of color in the movie!). Obviously, all right lenses in the theater must behave the same, and all left lenses must behave the same, in order for different customers to see roughly the same effect. And, insofar as possible, light that passes through left lenses must not pass through right lenses, and vice versa, in order to achieve cleanly separate pictures.
( experiments with light )
It's also in 3-D, which is usually accomplished by showing slightly different pictures to the left and right eyes to create parallax. Now, a few decades ago, this was done with one picture in red and the other in green; everybody wore glasses that were red on one side and green on the other (which puts severe limits on the use of color in the movie!). Obviously, all right lenses in the theater must behave the same, and all left lenses must behave the same, in order for different customers to see roughly the same effect. And, insofar as possible, light that passes through left lenses must not pass through right lenses, and vice versa, in order to achieve cleanly separate pictures.
( experiments with light )
