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15:18 Jan 24, 2018 |
German to English translations [PRO] Tech/Engineering - Medical: Instruments / Eyeglass lenses | |||||||
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| Selected response from: Mair A-W (PhD) Germany Local time: 14:22 | ||||||
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Summary of answers provided | ||||
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4 +2 | differentiable |
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Discussion entries: 5 | |
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differentiable Explanation: https://books.google.de/books?id=8YbbAAAAMAAJ&q="ableitbar" ... (not derivable, here: differentiable) https://math.stackexchange.com/questions/1117323/the-definit... From: https://en.wikipedia.org/wiki/Smoothness#Differentiability_c... : a continuously differentiable function is a continuous function whose derivative exists. All lenses are continuously differentiable! It's not a functioning lens until this is achieved There is some evidence for the use of "continuously differentiable" relating to lenses on google patents, although I tend to take those with a pinch of salt (e.g. http://www.google.ch/patents/CA1223142A?cl=en https://www.google.com/patents/US5137343) You can also see mathematical papers on lens design that refer to the (twice) "continuously differentiable" property e.g. https://arxiv.org/pdf/0704.1059.pdf -------------------------------------------------- Note added at 4 hrs (2018-01-24 19:27:33 GMT) -------------------------------------------------- Also this question on lenses is essentially synonymous (except for the zweimal which yours doesn't mention) https://www.proz.com/kudoz/german_to_english/other/631537-zw... |
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