If you’ve ever used an extruding 3D printer, you know that the resulting prints aren’t exactly smooth. At the Southackton hackerspace [James] and [Bracken] worked out a method of smoothing the parts ...
THE fluorescence of acetone was first observed by Gelbke 1. It was also observed independently in the vapour by Mr. C. W. Woolgar of King's College, London, who kindly directed our attention to its ...
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