Temperature is a measure of the average kinetic energy of the particles in a substance. It indicates how hot or cold an object is. Temperature is commonly measured in degrees Celsius Kelvin or Fahrenheit. It plays a key role in determining the state and behavior of matter.
What is meant by triple point of water? What is the advantage of taking triple point of water as the fixed point for a temperature scale?
Share
The triple point of water is the temperature and pressure at which water coexists in all three phases: solid (ice), liquid (water), and gas (vapor). It happens at a temperature of 0.01°C and a pressure of 611.657 pascals. At that point, the substance is in balance among all the three phases.
Advantage of Taking Triple Point of Water as the Fixed Point for a Temperature Scale:
A particular advantage that makes the use of the triple point of water a fixed reference in a temperature scale is because it gives precise and reproducible values. When it occurs at specified conditions regarding both temperature and pressure, there exists a certain level of stability as a reference in defining various temperature scales, hence bringing out high accuracies in this process. With these conditions satisfied, it tends to give very similar measurements from anywhere in the world.
Click here for more:
https://www.tiwariacademy.com/ncert-solutions/class-11/physics/chapter-10/