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Message: <blockquote data-quote="Gijs van Ginkel" data-source="post: 3150482" data-attributes="member: 82596">Lee, post 26,Yes, you are right and I think about the cat of Schrödinger, who was kept in a box and nobody was sure whether he was there or not and about Stephen Hawkins who threatened to shoot himself if we were referring to this magic cat. Life is full of surprises and  unexpected things, I was confronted with it when our neighbours cat died suddenly by a small hole in his head and we did not hear the sound of the shot and we also were not able to get a picture of Hawkins when he disappeared around the corner although we were not sure whether it was him or our prime  minister, who does not like cats. So you made me uncertain whether to measure is to know, perhaps we should go back to the Middle ages and start to make gold again from mixing sand with potassium or sodium and suddenly finding that something emerged we could look through (actually that is how looking glasses were discovered, Alice told me about it when we met in wonderland whre she saw al kinds of colors before her eyes, the basis of our color theory, and all that because her founding father was a pastor in the English village of Daresbury, where they established a synchrotron to generate light of all kinds of colors). Is that relevant to binoculars?Of course, but you will understand that directly,Gijs</blockquote>