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Besides pinholes made by the point of a pin, precision commercial pinholes are often made by
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62:and a hundred micrometers are used as
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230:. You can help Knowledge (XXG) by
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37:Solar eclipse of August 21, 2017
162:"Understanding Spatial Filters"
27:of a damaged 80 Ξm pinhole
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166:Edmund Optics website
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188:"Spatial Filters"
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168:. Edmund Optics
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198:13 January
172:13 January
148:References
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