Faster access than browser!
27 relations: Alfvén wave, Angle of incidence (optics), Angular frequency, Atmospheric duct, Charged particle, Critical frequency, Cutoff frequency, Cyclotron resonance, Earth's magnetic field, Electrical conductor, Electromagnetic radiation, Extremely low frequency, Ground plane, Group velocity, Hertz, Ionosphere, Lightning, Radio atmospheric, Radio propagation, Resonance, Schumann resonances, Shortwave radio, Skywave, Tropospheric propagation, Very low frequency, Waveguide, Whistler (radio).
Alfvén wave
In plasma physics, an Alfvén wave, named after Hannes Alfvén, is a type of magnetohydrodynamic wave in which ions oscillate in response to a restoring force provided by an effective tension on the magnetic field lines.
New!!: Earth–ionosphere waveguide and Alfvén wave · See more »
Angle of incidence (optics)
In geometric optics, the angle of incidence is the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the normal.
New!!: Earth–ionosphere waveguide and Angle of incidence (optics) · See more »
Angular frequency
In physics, angular frequency ω (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate.
New!!: Earth–ionosphere waveguide and Angular frequency · See more »
Atmospheric duct
In telecommunications, an atmospheric duct is a horizontal layer in the lower atmosphere in which the vertical refractive index gradients are such that radio signals (and light rays) are guided or ducted, tend to follow the curvature of the Earth, and experience less attenuation in the ducts than they would if the ducts were not present.
New!!: Earth–ionosphere waveguide and Atmospheric duct · See more »
Charged particle
In physics, a charged particle is a particle with an electric charge.
New!!: Earth–ionosphere waveguide and Charged particle · See more »
Critical frequency
In telecommunication, the term critical frequency has the following meanings.
New!!: Earth–ionosphere waveguide and Critical frequency · See more »
Cutoff frequency
In physics and electrical engineering, a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced (attenuated or reflected) rather than passing through.
New!!: Earth–ionosphere waveguide and Cutoff frequency · See more »
Cyclotron resonance
Cyclotron resonance describes the interaction of external forces with charged particles experiencing a magnetic field, thus already moving on a circular path.
New!!: Earth–ionosphere waveguide and Cyclotron resonance · See more »
Earth's magnetic field
Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from the Earth's interior out into space, where it meets the solar wind, a stream of charged particles emanating from the Sun.
New!!: Earth–ionosphere waveguide and Earth's magnetic field · See more »
Electrical conductor
In physics and electrical engineering, a conductor is an object or type of material that allows the flow of an electrical current in one or more directions.
New!!: Earth–ionosphere waveguide and Electrical conductor · See more »
Electromagnetic radiation
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.
New!!: Earth–ionosphere waveguide and Electromagnetic radiation · See more »
Extremely low frequency
Extremely low frequency (ELF) is the ITU designation for electromagnetic radiation (radio waves) with frequencies from 3 to 30 Hz, and corresponding wavelengths of 100,000 to 10,000 kilometers, respectively.
New!!: Earth–ionosphere waveguide and Extremely low frequency · See more »
Ground plane
In electrical engineering, a ground plane is an electrically conductive surface, usually connected to electrical ground.
New!!: Earth–ionosphere waveguide and Ground plane · See more »
Group velocity
The group velocity of a wave is the velocity with which the overall shape of the wave's amplitudes—known as the modulation or envelope of the wave—propagates through space.
New!!: Earth–ionosphere waveguide and Group velocity · See more »
Hertz
The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.
New!!: Earth–ionosphere waveguide and Hertz · See more »
Ionosphere
The ionosphere is the ionized part of Earth's upper atmosphere, from about to altitude, a region that includes the thermosphere and parts of the mesosphere and exosphere.
New!!: Earth–ionosphere waveguide and Ionosphere · See more »
Lightning
Lightning is a sudden electrostatic discharge that occurs typically during a thunderstorm.
New!!: Earth–ionosphere waveguide and Lightning · See more »
Radio atmospheric
A radio atmospheric signal or sferic (sometimes also spelled "spheric") is a broadband electromagnetic impulse that occurs as a result of natural atmospheric lightning discharges.
New!!: Earth–ionosphere waveguide and Radio atmospheric · See more »
Radio propagation
Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another, or into various parts of the atmosphere.
New!!: Earth–ionosphere waveguide and Radio propagation · See more »
Resonance
In physics, resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies.
New!!: Earth–ionosphere waveguide and Resonance · See more »
Schumann resonances
The Schumann resonances (SR) are a set of spectrum peaks in the extremely low frequency (ELF) portion of the Earth's electromagnetic field spectrum.
New!!: Earth–ionosphere waveguide and Schumann resonances · See more »
Shortwave radio
Shortwave radio is radio transmission using shortwave radio frequencies.
New!!: Earth–ionosphere waveguide and Shortwave radio · See more »
Skywave
In radio communication, skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere, an electrically charged layer of the upper atmosphere.
New!!: Earth–ionosphere waveguide and Skywave · See more »
Tropospheric propagation
Tropospheric propagation describes electromagnetic propagation in relation to the troposphere.
New!!: Earth–ionosphere waveguide and Tropospheric propagation · See more »
Very low frequency
Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3 to 30 kilohertz (kHz), corresponding to wavelengths from 100 to 10 kilometers, respectively.
New!!: Earth–ionosphere waveguide and Very low frequency · See more »
Waveguide
A waveguide is a structure that guides waves, such as electromagnetic waves or sound, with minimal loss of energy by restricting expansion to one dimension or two.
New!!: Earth–ionosphere waveguide and Waveguide · See more »
Whistler (radio)
A whistler is a very low frequency or VLF electromagnetic (radio) wave generated by lightning.
New!!: Earth–ionosphere waveguide and Whistler (radio) · See more »
Redirects here:
Earth-Ionosphere waveguide, Earth-ionosphere waveguide.
References
[1] https://en.wikipedia.org/wiki/Earth–ionosphere_waveguide
