physical features map of middle east

Rutherford's Atom Model (Main Features) - (i) Every atom consists of a nucleus containing the entire +ve charge. The whole mass of atom is concentrated at this core. (ii) The size of the nucleus i.e., 10 - 1 5 m is very small compared to the size of the atom (i.e., 10 - 1 0 m). (iii) The ..

. A signal traveling from west to east encounters the first hybrid coil, where part of the power enters the west-east amplifier by way of the centre taps on the main winding..

Demagnetization - The best method to demagnetize is by keeping the magnet in a coil through which an alternating current is passed. When the current starts flowing through the coil, the magnet is pulled out of the coil in east-west direction and kept far away. The magnetic field produced ..

is the fluctuation in signal strength at a receiver and may be rapid or slow, general or frequency-selective. In each case it is due to interference between two waves, which left the same source but arrived at the destination by different paths. The fluctuation is more likely with smaller waveleng..

A star is a dense cloud of hydrogen and helium gas contracting under its own gravitational pull. In all the stars hydrogen atoms are continuously converted into helium atoms and this process is accompanied by a large amount of energy. This energy is radiated in the form of heat and light. The stars..

The branch of physics dealing with the study of optical phenomena is called optics. This can be divided into two categories, ray optics and wave optics. Wave optics describes the connection between waves and rays of light. The wave theory of light was put forth by Huygen and later modifie..

Electromagnetic Induction The wire is directed along south-north direction and the magnetic field is from west to east. When the loop is pulled up such that the wire AB moves upwards in the field, a current is induced in the loop as shown in the figure. The direction of the current will b..

If a small compass needle is placed at a point near the north pole of a bar magnet, the needle turns round on its pivot and settles in a fixed direction as shown in figure. At other points away from the pole the needle settles tangent to the field lines shown. The magnet exerts a magnetic force in ..

Let B y be the magnetic field at the centre of the coil Y due to the current I y flowing in it. If N y be the number of turns and r y the radius of the coil, then For an observer looking at the coil Y facing west, the current is flowing in the clockwise direction. So, the direction of field ..