唠叨
发表于 2025-4-2 21:58:21
Paul Eling, intersects BC at a distance . = . from the aperture. Then for . ≪ ., geometrical optics is a good approximation. For . ≫ ., ‘Fraunhofer’ diffraction theory applies. In this region, the beam spreads linearly with distance .; the first null in the diffraction pattern is given by (using the geometry
Limpid
发表于 2025-4-3 00:46:58
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节省
发表于 2025-4-3 04:51:01
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解冻
发表于 2025-4-3 09:35:08
Paul Elings to lower the probability of error (considerably) at the expense of spending some of the transmission time or energy on . symbols. The idea is explained in one sentence as follows. When we read printed text we recognize a printing error in a word because in our vocabulary there is only one word tha
英寸
发表于 2025-4-3 14:00:40
Paul Elings. An operator or function defined in such a way is often called ‘derived’ for this reason.However, we may well find difficulty in producing an explicit definition for a number of reasons: the result of the function may not be expressible in a single formula, but may require a number of assertions t