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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

Lessons on Life

 Biology

Chapter - 1: Lessons on Life

👉 All Chapter Contents 👈 


  • 1.1  Concept of Biology
  • 1.2  Branches of Biology
  • 1.3  Classification of living beings
  • 1.4  Different steps of Classification
  • 1.5  System of Binomial Nomenclature


Question Bank

1.1  Concept of Biology


1.2  Branches of Biology


1.3  Classification of living beings


1.4  Different steps of Classification


1.5  System of Binomial Nomenclature



Secondary Biology


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