Short Final: Optical Illusion?

The day before the opening of Sun ‘n Fun Aerospace Expo this year, I stopped in at the local Publix supermarket for some provisions. The nice folks behind the counter asked if I was in town for the show, and I confessed I was.


This is a companion discussion topic for the original entry at https://www.avweb.com/features/you-can-see-it-all-at-sun-n-fun

Did you get some SNF 50 Sunscreen?

Since UV is outside the visible spectrum, I wonder how she was able to see them?

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