ONLY RECENTLY HAVE TECHNIQUES BEEN DEVELOPED TO JOIN TWO PIECES OF GLASS
Glass is such a good structural medium that in the 16th century Galileo used it to test hypotheses, as did Griffith in the 20th century. But it is only recently that techniques have been developed to attach two pieces of glass together. Pieces of wood can be joined with wood pins hammered into holes that distort both the pin and the hole to ensure a perfect fit. The fit between the pin and hole needs to be 0.5 per cent of the diameter, making tolerance difficult without distortion. ...
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