![]() Thermometer Model – A thermometer is a device used to measure temperature.Building a Thermometer – Build an instrument to measure water temperature.Kelvin Temperatures and Very Cold Things! – To keep track of some of the coldest things in the universe, scientists use the Kelvin temperature scale. ![]() Explore heat and energy and learn how they are measured. Absolutely Hot – Analyze a common chemical reaction.How Do You Measure Air Temperature Accurately – For purposes of safety, accuracy and convenience, air temperature is most often measured using electronic thermometers, which detect the changes in the resistance to the flow of electrical current through a metal.Kelvin: Introduction – Temperature is one of the most important and ubiquitous measurements in human life.Recite and reflect on the Celsius Temperature Poem. Celsius Temperature PoemĪctivity: Estimate the Celsius temperature in each scene (ice crystals, tulip flowers, park bench, and swimming pool). Thermometers to be calibrated are placed in the reentrant well. When the cell is cooled enough so that a mantle of ice forms around the reentrant well, the temperature at the interface of solid, liquid, and vapor is 273.16 K. ![]() The standard temperature at the triple point of water is provided by a special cell, an evacuated glass cylinder containing pure water. An interval of one Celsius degree corresponds to an interval of 1.8 Fahrenheit degrees on the Fahrenheit temperature scale. One Celsius degree is an interval of 1 K, and zero degrees Celsius is 273.15 K. The temperature 0 K is commonly referred to as "absolute zero." On the widely used Celsius temperature scale, water freezes at 0 ☌ and boils at about 100 ☌. The kelvin (K) is defined by taking the fixed numerical value of the Boltzmann constant k to be 1.380 649 ×10 −23 when expressed in the unit J K −1, which is equal to kg m 2 s −2 K −1, where the kilogram, meter and second are defined in terms of h, c and ∆ν Cs.
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