Wednesday, 2024-12-25
The daily puzzle:
What does '*****' mean in the following text?
"***** refer to thermometers capable of measuring or indicating the (generally small) difference between two temperatures. Often called thermoscopes, they were commonly used to study thermal radiation. They consist of a capillary U-tube closed at both ends by two glass bulbs. In the tube is inserted a drop of liquid serving as an indicator. When one of the two bulbs (which is often blackened) is exposed to a source of thermal radiation, the air in the bulb expands, pushing the drop along the capillary tube toward the second bulb.Ref: 86525/2006-09-15Other Database Pages Exist for this Phrase: Thermometer Differential (Differential refers to a device - usually made ...) Thermometer (Thermometer refers to an instrument for ...) Indicator (Indicator is identified as an observed value ...)"--++--++--
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