David Goodman wrote: > additionally, a simple lens can be ground with hand tools and no > preexisting technology except glassmaking to produce several hundred > power magnification > >
Not that I want to denigrate glass makers, but what is wrong with naturally occurring clear material such as rock crystal and the like? Yours, Jussi-Ville Heiskanen _______________________________________________ foundation-l mailing list foundation-l@lists.wikimedia.org Unsubscribe: https://lists.wikimedia.org/mailman/listinfo/foundation-l
