Nonlaser things that I think GFers will find interesting

Here’s one:

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Very interesting.

Now if I could just get my brain to focus on this screen without the use of cheater glasses :slightly_frowning_face:

That is really interesting! So if everything was blue, we wouldn’t need those glasses!

You were right, that was fascinating. We have seen examples of the brain “filling in the blanks” before, like completing the image when the eye’s blind spot omits information, but this is the first example and explanation of the physics of color refraction and how the brain “corrects” for it that I have seen. Very cool.
Thanks for sharing that!