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What is thermometry?

Thermometry The branch of heat relating to the measurement of the temperature of a body is called thermometry. The thermometer is an instrument used to measure the temperature of a body. The essential requisites of a thermometer are given as under:  1) Construction, 2) Calibration, and 3) Sensitiveness. For the construction of a thermometer, the proper choice of a substance, whose physical property varies uniformly with rising in temperature, is essential. 1) Construction The physical property of a substance plays an important role in the construction of a thermometer. In a mercury thermometer, the principle of expansion of mercury with rising temperature is used. The platinum resistance thermometer is based on the principle of the change in resistance with a change in temperature. The gas thermometer is based on the principle of change in volume or pressure with a change in temperature. 2) Calibration  When a thermometer is constructed, it should be properly calibrated. The standa

Environment of Life

 Biology

Chapter - 13: Environment of Life

👉 All Chapter Contents 👈 


  • 13.1  Ecosystem
  • 13.2  Ecosystem of a pond
  • 13.3  Food Chain
  • 13.4  Food Web
  • 13.5  Biodiversity
  • 13.6  Significance and method of conserving Environment


Question Bank

13.1  Ecosystem


13.2  Ecosystem of a pond


13.3  Food Chain


13.4  Food Web


13.5  Biodiversity


13.6  Significance and method of conserving Environment



Secondary Biology

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