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“heliothermometer”
heliothermometer
An early form of solar collector, invented by Swiss scientist Horace-Benedict de Saussure in about 1780.
This entry is located in the following units:
helio-, heli-
(page 5)
thermo-, therm-, thermi-, -thermia, -therm, -thermal, -thermic, -thermias, -thermies, -thermous, -thermy
(page 10)