1. What is the effect of the Earth on the propagation of radio waves.

Solutions

Expert Solution

Earth's atmosphere acts as an impenetrable barrier to all the elctromagnetic waves except radio and visible waves. The atmosphere of the earth absorbs most of the wavelengths, shorter than ultraviolet and most of the wavelengths between infrared and microwaves. Very large wavelength of radio waves are also absorbed by the ionosphere of the Earth's atmosphere but short to medium range wavelengths of radio waves are penetrable to the atmosphere, this range of radio waves which are penetrable to the atmosphere is known as radio window. The radio window start point is 5 MHz of frquency and end point is 30 GHz. The lower frequency end of the radio window is due to radio signals which are reflected back into space by the inosphere. The upper frequency end of the radio window is caused by the absorption of the radio waves by water vapor and carbon dioxide in the atmosphere. Therefore if the atmospheric conditions changes. the radio window expands or shrinks.

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

(1) Radio waves and light are electromagnetic waves and transverse waves that can operate in a...

(1) Radio waves and light are electromagnetic waves and transverse waves that can operate in a medium or in space. What is an Aether or ether? Upon which medium does sound travel the fastest? (2) Some scientists think that ether does exist but does exist in another dimension that we cannot see. Can you elaborate on this?

What is propagation explain diffrent type of propagations related to principle of electromagnetic waves

1. a) Huygens' Principle. Pick a type of propagation of waves that light rays don't exhibit....

1. a) Huygens' Principle. Pick a type of propagation of waves that light rays don't exhibit. Several to pick in the notes. On a sheet of paper, graph the starting wavefront of your choice, and continue with the Huygens' Principle construction of at least 4 additional wavefronts. Does it look like the wave movement can not be described as a ray? b) Name and describe one of the three processes mentioned that allow you to calculate intensity profile on a...

From the information, what is element X? a.) The wavelength of the radio waves sent by...

From the information, what is element X? a.) The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 x 10^7) times greater than the wavelength corresponding to the energy difference between a particular excite stateof the hydrogen atom and the ground state. b.) Let V represent the principle quantum number for the valence shell of element X. If an electron in the hydrogen atom falls from shell V to the inner...

Identify the type of radio wave propagation shown in figure below: (1 mark ) Give any...

Identify the type of radio wave propagation shown in figure below: (1 mark ) Give any four characteristics (properties) of radio wave propagation in the VHF band. (2 marks ) Maximum line of sight distance between transmitting and receiving antennas for a space wave communication system is given as 45 km. The distance of the horizon from the transmitting antenna is 28 km. Calculate the height of the receiving antenna in meters.

With necessary equations and diagrams, explain the propagation of Electromagnetic Waves in a Conducting Medium

State whether the property generally describes waves or particles. 1. rectilinear propagation 2. diffraction 3. reflection...

State whether the property generally describes waves or particles. 1. rectilinear propagation 2. diffraction 3. reflection 4. refraction 5. partial reflection-partial refraction 6. dispersion

Dicuss the radio wave propagation in ionosphere thorigh reflection and refraction. According to 5 marks

Dimensional analysis In deep water, the fact that the propagation velocity v for surface waves has...

Dimensional analysis In deep water, the fact that the propagation velocity v for surface waves has been observed depends on the wavelength λ of the waves and the wave height h. It is also reasonable to believe that also the density ρ of the liquid and the acceleration of gravity g affect. Use dimensional analysis for to produce a possible connection. Note that the dimensional analysis can show that someone parameter actually has no effect. In that case, this must...

Please show the steps 1) Radio waves travel at the speed of light, 300,000 km/s. The...

Please show the steps 1) Radio waves travel at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 megahertz is 1) _______ A) 3.0 m. B) 300 m. C) 0.3 m. D) 30 m. E) none of these 22) Two charged particles repel each other with a force F. If the charge of one of the particles is doubled and the distance between them is also doubled, then the force will be 22) ______...

Subjects