changes in core cpi

The dipole pattern of earth's magnetic field is disturbed due to solar winds. Solar winds are a stream of charged particles coming from the sun. These particles ionise the atmosphere above these poles which display a light high up in the atmosphere. This phenomenon occurring in the arctic region is..

. The earth's earliest atmosphere may have contained hydrogen, helium, methane and ammonia, similar to the present atmosphere of Jupiter. Or it may have contained a large amount of carbon dioxide, as does the atmosphere of Venus. The earth's earliest atmosphere probably did not contain much free ox..

Magnetic Field Due to a Solenoid - A solenoid is a long coil (shaped like a cylinder) containing a large number of close turns of insulated copper wire. The figure above shows a solenoid SN whose ends are connected to a battery B through a switch X. When a current is passed through a solenoid, it p..

An AC generator consists of a magnet with concave cylindrical poles, an armature, and a current collecting arrangement. The current collecting arrangement consists of slip rings and brushes. Armature is a soft iron core on which a coil having a large number of turns of insulated copper..

. In 1907, Korn sent the first inter-city fax when he transmitted a photograph from Munich to Berlin. This was perhaps the greatest boost the fax machine had faced so far, and soon many people would try to perfect the machine. In France, Edouard Beeline constructed the Belinograph. His invention in..

>A ballet dancer can vary her angular speed by outstretching her arms and legs. Suppose the dancer is rotating with her legs and arms stretched outward and if she suddenly folds her arms and brings her stretched legs closer, thereby reducing the moment of inertia, her angular velocity increases due..

>Average power consumed/cycle For reducing low frequency alternating current, choke coils with laminated soft iron cores are used, and for reducing high frequency alternating currents, air cored chokes are used. A transformer is an electrical device, which is used for chang..

Dalton had postulated that matter is made up of atoms, which are indivisible. Thomson was the first to suggest a structure for an atom. According to him, an atom is a positively charged sphere of radius=10 - 1 0 m in which the mass and the positive charge of the atom are uniformly distributed...

Summary - Dalton had postulated that matter is made up of atoms, which are indivisible. Thomson was the first to suggest a structure for an atom. According to him, an atom is a positively charged sphere of radius=10 - 1 0 m in which the mass and the positive charge of the atom are uniformly distrib..