The main disadvantage of microwave transmission is that microwave towers can exchange data only if they have a clear line of sight between them with no obstacles such as buildings, hills or trees in the way. Other disadvantages include signal absorption by the atmosphere, weather interference and expense.Know More
Microwave signals usually travel in a straight line from a transmitter to a receiver. If the signals pass through regions of air with different densities, as they might when crossing a body of water, the signals bend slightly. Instead of reaching the receiver, some signals are absorbed into the atmosphere, and the lost signals affect transmission quality. Microwave signals can also be affected by heavy rain, hail and snow. Raindrops and hailstones in particular are about the same size as the wavelengths of a high-frequency microwave. A storm can block microwave communication, creating a problem called rain fade. Another disadvantage of microwave transmission is the cost of the towers, which are expensive to build.
An advantage of microwave transmission is that rather than using cables or other physical wires, it uses electromagnetic waves with small wavelengths. The size of the wavelengths allows a transmitter to direct microwaves to a receiver in a narrow beam, improving efficiency. Furthermore, the high frequency of microwaves means that a microwave beam has a very large information-carrying capacity.Learn more in Optics & Waves
To check the transmission fluid, start the vehicle, park on a level surface, use the parking brake, shift through all gears and then put the vehicle in park, remove the transmission dipstick and clean it completely, return the dipstick and remove it again and then check the level of the fluid in the "COLD" area. To get an accurate reading, the vehicle must be running when checking the transmission fluid.Full Answer >
Light travels at a considerably higher speed than sound. Light travels at a constant speed of 186,000 miles per second, but the speed of sound is only 761.2 mph.Full Answer >
Three examples of mechanical waves are sound waves, slinky waves and water waves. Mechanical waves differ from electromagnetic waves because the energy is transferred through another medium, such as the metal in a slinky, rather than through a vacuum, such as light through outer space.Full Answer >
Sound travels through water at a speed of around 3316 miles per hour or 1.482 kilometers per second. That is about 4.3 times faster than sound travels through air. The speed changes slightly depending on the salinity of the water.Full Answer >