Yes, I agree, if you are looking at _reflected_ light (from say the sun or a
light bulb) at a glance. If it's there, I assure you it can be seen quite
plainly with the naked eye as a rainbow of colors - so long as light does
not pass through the lens to you.
Regards,
Bob...
Give blood. Play hockey.
From: "Provencher, Paul M." <[EMAIL PROTECTED]>
> >> they could only be seen in the diffraction pattern from
> light reflected off the lens coating. <<
>
> This can be seen with a 15X Loupe (if it is there to be seen)
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