Subject: Re: People Keep Walking Into Glass at Apple Park
On Tuesday, 20 February 2018 12:43:51 UTC-5, nospam wrote:
> In article<firstname.lastname@example.org>,
> RichA<email@example.com> wrote:
> > "Quite hard to see?" Maybe if you're stoned all the time. Glass reflects 4%
> > at each surface (perpendicular rays) and a lot more at glancing angles.
> > Hard not to actually see it.
> nowhere near 4%.
> if that were the case, a camera lens with multiple surfaces would be
> nearly opaque.
96% uncoated, 98.5% single-layer magnesium-fluoride coated, 99% or so with multicoatings. Old
cameras lens could (through reflection and internal absorption cut out 40-50% of the incoming light.
Please feel free to educate yourself further.