wave refraction causes

Superposition of Waves - When a number of similar waves pass through a medium simultaneously, each wave travels through the medium as though the others were not present. However, at any point in the medium, the net effect of the waves reaching that point at a..

. This makes the water level to rise up at P 5 and P 6 . Thus, the ripples spread outwards in circles of increasing radii, with P as centre. Let one end of a long rope be attached to a rigid support and the other end held in the hand. If the rope is jerked suddenly, by moving the hand in a single u..

. This is made up by energy diffracted down- ward from the upper portions of the wavefront. There is another way in which the surface wave is attenuated. Because of diffraction, the wavefront gradually tilts over, as shown in the below figure. As the wave propagates over the Ear..

Sky waves are the AM radio waves, which are received after being reflected from the ionosphere. The propagation of radio wave signals from one point to another via reflection from ionosphere is known as sky wave propagation. The sky wave propagatio..

Wave motion is the propagation of a disturbance produced in a medium by the repeated periodic motion of the particles of the medium. It is only the energy of the disturbance that moves forward without any mass transfer. In an elastic medium, the frequency and the amplitude of osci..

Take points 1,2,3 on the given wavefront AB. The distance traveled by light in t secs will be 'ct' where c is the velocity of light. With point 1 as centre and ct as radius, draw a sphere as shown (dotted circles). Repeat for points 2 and 3 and so on. Now draw a surface A 1 B 1 and A 2 B 2 such tha..

. One end of a long rope is attached to a rigid support and the free end is given a sudden jerk, causing an up and down motion. The hump produced near the hand begins to move away from the hand. If the hand is repeatedly moved up and down, then instead of a pulse, a succession of pulses w..

For example, an excited tuning fork or a plucked guitar string, produces sound. On close observation, the prongs of the tuning fork or the string is found to have a hazy and blurred outline on account of rapid vibrations. If they are gently touched with the fingers, a series of impulses will be fel..

As the wave is refracted, it is bent down gradually rather than sharply. However, below the ionised layer, the incident and refracted rays follow paths that are exactly the same as they would have been if reflection had taken place from a surface located at a greater h..

Important Terms Used in the Study of Sky Wave Propagation - As the wave is refracted, it is bent down gradually rather than sharply. However, below the ionised layer, the incident and refracted rays follow paths that are exactly the same as they would have be..