Smoked glass
Smoked glass is glass held in the smoke of a candle flame (or other inefficiently burning hydrocarbon) such that one surface of the sheet of glass is covered in a layer of smoke residue. The glass is used as a medium for recording pen traces in scientific instruments, and is also used to track pheromone deposition in ants[1]
The advantages of using the glass are that the recording medium is easily renewable (just re-smoke the glass), and that the trace obtained can easily be magnified by
projection onto a suitable surface.[2][3][4] A variation on this scheme is the use of smoked paper in early seismographs.[5]
The effect of smoked glass can be incorporated into glass manufacture by adding darkening materials, such that light passing through the glass is decreased in
eyesight
.
See also
References
- S2CID 53147539.
- ^ "11.6.1.2 The Tomlinson Surface Meter". Retrieved 2008-11-03.
- ISBN 978-0-521-24915-7.
- ^ "Development-Inspection of Gas-Turbine Components at D. Napier & Son, Ltd.: Recording Profiles on Smoked Glass: Equipment and Technique". Aircraft Production. 12 (139). Iliffe Production Publications: 161–166. May 1950.
- ISBN 978-1-4020-2968-4.
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