Category: Physics

Peltier Effect and Thomson Effect

If the junctions of a thermocouple are kept at constant temperature and a current is passed through the wires of the thermocouple, it has been...

Voltaic Cell, Its Construction and Defects

A voltaic cell is an electrochemical cell used to produce electrical energy with the help of a chemical reaction. It is the primary cell which was designated by...

Gibbs’ Free Energy Function

All spontaneous processes tend to achieve a state of minimum energy and maximum entropy. For a system, generally it is not possible to achieve both,...

First Law of Thermodynamics

This law is also called the law of conservation of energy. It can be stated in many ways but the following form is found to...

Mechanical energy and It’s types

The energy possessed by a body because of its motion and position or state is called mechanical energy. For example: a moving car possesses energy;...

De Broglie theory (Duality)

The photoelectric effect showed that light consists of streams of particles called photons. This leads to the conclusion that like matter, light radiation can sometimes...

Orbital velocity and its expression

The orbital velocity of a satellite is the velocity required to be given to the satellite in order to put it in an orbit around...

Consequences of surface tension

The force that acts at right angles to an imaginary line of unit length at the surface of liquid at rest is called surface tension....