2:08 PM
The advantages of using the glass are that the recording medium is easily renewable (just resmoke the glass), and that the trace obtained can easily be magnified by projection onto a suitable surface. A variation on this scheme is the use of smoked paper in early seismographs.. The effect of smoked glass can be incorporated into glass manufacture by adding darkening materials, such that light ...
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semogaterkaboel
Tuesday, January 26, 2021