Music Articles
171: Exit Festival - Probably the Best Festival in the World!
A record number of festival goers descended on the picturesque town of Novi Sad, with over 10,000 Brits enjoying delights of the Petrovaradin fortress for this year’s Exit Festival in Serbia.
172: Super Refraction
When the M curve has a negative slope the curvature of the ray is concave downward on a plane earth diagram and the true curvature of the rays is greater than the curvature of the earth.
173: Static and Noise
By the term static is meant the radio disturbance caused by natural causes such as lighting, electrical sparks etc.
174: Space wave propagation
By space wave we mean the radio wave which travel from the transmitting antenna to the receiving antenna through the space that is the earth’s troposphere.
175: Pulse Code Modulation
Pulse amplitude modulation, pulse width modulation and pulse position modulation form cases of analog pulse system. Pulse code modulation and delta modulation form cases of digital pulse modulation.
176: Fading
By fading of a radio signal we mean that incident wave change in the field strength of signal received from distant transmitter.
177: Effects on ionosphere
A solar eclipse causes a decrease in the critical frequency of E and F1 layer. The variation of critical frequency is approximately in phase with the optical eclipse.
178: Effect of magnetic field on radio waves
The radio waves traveling through the ionosphere possess kinetic energy. This kinetic energy is imparted to the free electrons. Thus these free electrons in the ionosphere are set to vibration.
179: Effect of ionosphere on radio wave
The radio waves traveling through the ionosphere possess kinetic energy. This kinetic energy is imparted to the free electrons. Thus these free electrons in the ionosphere are set to vibration.
180: Duct propagation
In troposphere under normal conditions the air pressure water vapor pressure and temperature reduces with the increase of height above earth.
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