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June 25, 2009


Cop Car

Sounds like a grand time was had by all. I like yellow sunglasses, but quit wearing them years ago because I had read/heard/invented that they didn't stop UVA or UVB (whichever was the concern of the moment). Have they been able to make the lenses more effective in UV? At my age, it makes no difference, I suspect. My cataracts are already here!

Too bad we can't meld your weather and ours to get something in between for us both.


It is not the color - or not now anyway - it is the coating. All sunglasses (even cheap ones) that I have bought in the last 10 years have full protection, including the yellow ones.

Cop Car

Glad to hear it. I wore yellow-lensed sunglasses when I lived in Florida (and wore my contacts much of the time). I do recall that they were good in low-light-level conditions and haze. I've also heard that they are favored by marksmen because they filter out the blue wavelengths, providing a sharper image. (I've forgotten why blue wavelengths smear an image - probably has to do with chromatic aberration. Back in 1956 or 1957, while taking an optics course, we learned how to correct for chromatic aberration; but the correction differs by wavelength.)

Now I've gone and displayed the depths of my ignorance. Glad you are up on the subject. With your eyes, you've done bunches more research than most of us have done.


I forgot to point out the chain - the one next to the sign that WS is leaning on. There are 3 chains securing the building into the rock base; to keep the wind from blowing the building over.

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