In article , whunter <whunterjr@xxxxxxxx> writes
As recognized, this entire loose thread of lanthanides, actinides,
optical coatings, etc. was still state-of-the -art 'spook' science - -
highly classified - - in the era when Qlympus and others introduced
these lenses.
As recognised by whom, Bill?
AR coating, for example, has been around virtually since Lord Rayleigh
published his paper on the topic in 1886 - long before one of the
countries leading the Cold War even came into existence! And the
technique of increasing the refractive index of glass by the addition of
heavy metals to the melt was published by German optics scientists
before WWII - and known well before that. What makes lead crystal so
special for ornamental glassware? Its refractive index!
If any of this work had been classified then I can assure you that not
only would a Japanese company not be able to work on it at the time
these lenses were introduced, they would certainly never have been made
available openly to the public!
--
Kennedy
Yes, Socrates himself is particularly missed;
A lovely little thinker, but a bugger when he's pissed.
Python Philosophers
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