If two wires of dissimilar metals, say copper and iron, be joined at two ends and if the two junctions be maintained at two different temperatures, one higher than the other, then an electromotive force…

Definition: Thermistor is one kind of semi conducting device which is used for measuring temperature. The name comes from thermal resistance. The resistance of the thermistor decrease with increase of temperature. Generally it is made…

Definition: It is observed that if a body, hotter than the environment, is kept at open space, it loses heat until the temperatures of the body and the environment become same. Similar phenomenon is observed…

Thermal Capacity The amount of heat required to raise the temperature of a body through 1K is called the heat capacity of that body. The heat capacity depends on the material and the mass of…

As the pressure acts on the surface of contact of the two pieces of ice, the melting point goes down i.e. the melting point becomes less than 0°C. But the temperature of the surface of…

Almost all the substances expand due to application of heat and contract for the extraction of heat. When a body is heated the heat energy and as such the kinetic energy of each molecule of…