primary sources versus secondary sources

Source of Electricity - Electrons in different metals can have different energies. If two of these metals are placed in a conducting liquid (electrolyte) a difference in electrical potential is set up between them. A pair of different metals arranged in this way is an electrochemical cell..

The Sun radiates energy in the form of heat and light. We utilize these forms of energy either directly or indirectly, after conversion into some other forms. Utilization of solar energy in various ways is as represented. Besides the primary role of the Sun's energy, it is now believed t..

Electrons in different metals can have different energies. If two of these metals are placed in a conducting liquid (electrolyte) a difference in electrical potential is set up between them. A pair of different metals arranged in this way is an electrochemical cell. It converts chemical energ..

Conventional sources of energy include fossil fuels, thermal energy and hydroelectric energy. Fossil Fuels It includes fuels which are most commonly used such as wood, coal and petroleum. These fossil fuels are non-renewable sources of energy. Therefore we need to conserve..

A cell is a source of electricity in which chemical energy is converted into electrical energy. There are two types of cells called the primary and secondary cells A cell in which chemical reaction is not reversible is called a primary cell. E.g., Daniel cell..

Causes of Water Pollution - Unlike air pollution, water pollution has to be studied in the spatial perspective to understand the causes. Hence, causes of water pollution can be classified as Main source of pollution - where in pure water is mixed with pollutant for first time Seconda..

Characteristics of Detritus Food Chain - a) Primary source of energy is dead organic matter called 'detritus' which are fallen leaves, plant parts or dead animal bodies. b) Primary consumers are 'detritivores' including protozoans, bacteria, fungi, etc which feed upon ..

Primary source of energy is dead organic matter called 'detritus' which are fallen leaves, plant parts or dead animal bodie..

It consists of a soft iron core made of laminated sheets well insulated from each other. The coils P 1 P 2 and S 1 S 2 are wounded on the same core. The coil P 1 P 2 is a primary coil connected to AC source and S 1 S 2 is a secondary coil connected across ..

Christian Huygen Huygen proposed a hypothesis for the geometrical construction of the position of a common wavefront at any instant during the propagations of waves in a medium. The postulates are: Every point on the given wavefront called 'primary wavefront' acts as a fresh so..