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#Mon Aug 09 12:00:46 CEST 2010
Text__2WhvUKOcEd-WfYQ0GneCwQ_text=<p>This instrument determines temperature by measuring the expansion of mercury. The first thermometers were constructed in the seventeenth century, but scales are not standardized until the eighteenth century. In the nineteenth century their production is still a technical art.</p>
Text__2WhvUKOcEd-WfYQ0GneCwQ_title=Thermometer