The thermometer was not a single invention, however, but a development. Hero of Alexandria (10–70 AD) knew of the principle that certain substances, notably air, expand and contract and described a demonstration in which a closed tube partially filled with air had its end in a container of water.
Thermometer, Liquid-Filled a temperature-measurement device whose operation is based on the thermal expansion of a liquid. Liquid-filled thermometers provide a direct reading of the temperature. Liquid-filled thermometers are commonly used in technology and in the laboratory for measuring temperatures from –200° to 750°C. They consist of a ...
When mercury filled thermometers break, the mercury is released. Mercury is toxic to people, pets and the environment. . There is a long history of mercury from broken thermometers and other ...
A Galileo thermometer (or Galilean thermometer) is a thermometer made of a sealed glass cylinder containing a clear liquid and several glass vessels of varying density. The individual floats rise or fall in proportion to their respective density and the density of the surrounding liquid as the temperature changes,
Thermometers measure temperature, by using materials that change in some way when they are heated or cooled. In a mercury or alcohol thermometer, the liquid expands as it is heated and contracts when it is cooled, so the length of the liquid column is longer or shorter depending on the temperature.
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Types of Liquid-In-Glass Thermometers  Introduction . There are two major types of Liquid-in-glass thermometers which are mentioned below: . Mercury Thermometers ; Alcohol Thermometers; Mercury Thermometers . This type of thermometer was developed by a German based physicist named Daniel Gabriel Fahrenheit.It consists of mercury as a liquid filled in a glass tube.
Thermometer designed for our Microscale spinning band Hickman-Hinkle column.Organic liquid filled with a yellow backing. Each thermometer is serialized and includes a Statement of Accuracy indicating traceability to NIST standards. 8 inch length with a 50mm immersion. Order code -40 retaining ring…
In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and ...
Enviro-Safe® Thermometer, Organic Liquid Filled, Ace Glass Incorporated Enviro-Safe® lab-grade thermometers, filled with organic green liquid Liquid is safer since it avoids the potential hazards of mercury thermometers.