On Wed, 30 Aug 2000 13:30:34 +0100, Chris Barrett
<cpbarrett@xxxxxxxxxxx> wrote:
>Ah, but is it SC or MC?
>
>If the lenses are invisible, then they must have a refractive index exactly
>the same as air,
>so they will not reflect any light. Therefore you don't need any coating!
>
>SC, MC or ZC (Zero coating)?
>
>Chris Barrett
>Malvern, UK
Oops, Chris - physics teach a different lesson.
When the invisible lens gets moist, let be saturated, its refractive
index will change. The lens might even get foggy when humidity is high
enough!
Frank van Lindert
Utrecht Holland.
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