What is a heat mean It is a little bit difficult to define h

What is a heat mean? It is a little bit difficult to define heat. But heat comes from the total kinetic energy contained in a body due to the movement of the particles inside the matter. In gases, humidity plays a role to feel the sensation of heat. How does the humidity affect to the sensation of heat? Please explain your concept in detail.

Solution

               Heat is a form of energy which is in transit. Heat flows whenever exist a temperature difference between system and surroundings. Heat flows in the direction of high temperature to low temperature. Yes it is true that heat comes from the kinetic energy of the particles inside the matter. But this kinetic energy of the particle is largely depends upon the temperature in which the matter is present. If temperature of the matter is very high and it placed in a low temperature surrounding then it results into large heat transfer compare to the case with if it placed in a relatively high temperature surroundings.

              Humidity represents the amount of water vapour present in the air at particular temperature and pressure. At every pressure there is a particular temperature exist which is called as saturation temperature. For this saturation temperature, the amount of water vapour it can have is constant. If the maximum number of water molecules exist in the surroundings then the state is called as saturated state.

               If the humidity( amount of water vapour) is high(saturated state), there is a large number of water molecules are in contact with the body you placed in the surroundings, the kinetic energy of the matter particle is transfer to the water molecule which is in contact with the matter. More the water molecules in contact with matter means, more kinetic energy of the matter is transfer to the surroundings(water vapour). Hence more heat loss from the matter. The case is opposite when there is less humidity.