laws governing radiation

Laws Governing Energy Transformations - The storage and expenditure of energy in an ecosystem is in accordance with the laws of thermodynamics (basic laws of thermodynamics). The first law of thermodynamics is the law of conservation of en..

The storage and expenditure of energy in an ecosystem is in accordance with the laws of thermodynamics (basic laws of thermodynamics..

Laws of Thermochemistry - All thermochemical reactions are governed by two laws..

Johannes Kepler derived three laws, which govern the planetary motion. These are, 1. The orbit of a planet is an ellipse with the Sun at the one of the foci. 2. The line joining the planet and the Sun sweeps equal areas in equal intervals of time. 3. The cube of the mean distan..

Kirchhoff's Law - A body that is a good radiator (or emitter) is also a good absorber. To understand this, suppose isotropic (i.e., equal in all directions) thermal radiation is incident on a body. Let a be the fraction of the total thermal radiation of all w..

Environmental Laws - One of the fundamental rights, according to the Indian constitution, is the Right to Life that has been interpreted as the Right to Healthy Environment. It is an adequate tool for ensuring sustainable development. Various laws have been enacted by the G..

The energy of thermal radiation emitted per unit time by a black body of surface ..

Stefan-Boltzmann Law - The energy of thermal radiation emitted per unit time by a black body of surface A, is given by u = s AT 2 -----(1) where s is a universal constant known as Stefan-Boltzmann constant and T is its temperature on absolute scale. The measured value of s is 5...

According to this, the wavelength ( l m ) of maximum intensity of emission of black body radiation is inversely proportional to the absolute temperature (T) of the black body i.e., where b is Wien's constant and is 2.898 x 10 - 3 mK Lummer and Pringsheim confirmed through experimen..

The rate of loss of heat by a body is directly proportional to the temperature difference between the body and the surroundings, provided the difference is not very large. Newton was the first person to investigate the heat lost by a body in air. He found that the rate of heat loss is proportional ..