A wave is produced due to the disturbance of particles of a medium. Waves are produced when particles of a medium vibrates. Energy is transferred from one point to other point when a wave propagates. There are two types of waves including transverse waves and longitudinal waves. Transverse waves are those waves in which movement of particles is perpendicular to the propagation of wave. Those waves in which movement of particles or disturbance in particles is parallel to the propagation of waves, are called longitudinal waves. Moreover, electromagnetic waves do not require any medium for their production
Seismic waves are tremors or vibrations in the Earth's crust that are caused by the build up or accumulation of pressure (more correctly termed stress).
This accumulation of stress causes the rocks that make up the crust to deform elastically. This is very similar to what happens when you squash or stretch a spring and causes a form of energy to be stored in the rocks of the crust - technically described as elastic potential energy.
When this stress gets too large, it exceeds the strength of the rocks in the crust and causes a brittle failure. Brittle failures are failures where fractures form through the material.
Over time the lithosphere has been repeatedly fractured in this way and so is now heavily faulted. These faults are weaker than the intact rock mass around them so tend to act as the focus point for earthquakes as they tend to slip before the surrounding rock can fail.
This sudden brittle failure causes all of the elastic potential energy to be released at one time in the form of seismic waves, just as if a spring or elastic band that was being stretched suddenly snapped.
An electromagnetic wave can be created by accelerating charges; moving charges back and forth will produce oscillating electric and magnetic fields, and these travel at the speed of light.
Radio waves are generated by a disturbance of the electromagnetic field.
Lightning for example gives out a pulse of radio waves over a broad range of frequencies, because of the ionization of the air.
For communication & TV, an electronic oscillator is used to generate an electrical signal, and when fed to an antenna, this signal will generate radio waves. These particular radio waves are modulated to carry the information - speech - pictures etc.
EM waves can be generated in many ways, depending on the type of wave.
1) acceleration of a charged particle.
2) change in energy state of the electrons around an atom.
3) change in energy state of an atomic nucleus.
Tides are generated by the gravitational pull of the Moon and the Sun.
Waves are caused by movement of surface water, usually by the wind.
Wind
No, colour is generated by the energy state of an electron in a bond. When we see objects of different colors, it is because our retinas are being activated by electromagnetic waves of different wavelengths (or frequencies, if you prefer). Or at least because our brains think they are receiving such a signal.
Geomagnetic waves are thought to be the lowest frequency (and, therefore, the longest wavelength) electromagnetic waves in the universe. They are generated by movements in planetary structures that modulate a planet's magnetic field to create the wave. Certainly lower frequency electromagnetic waves could be generated, but they would be artificial. A link is provided for some useful information.
Ultrasonic waves are high frequency sonic waves. They're sound, which is mechanical energy. Electromagnetic waves are waves of electromagnetic energy, like radio waves or light. Mechanical energy is different from electromagnetic energy, hence the reason for ultrasonic waves not taking the form of electromagnetic waves.
because sound waves are not a electromagnetic waves because they need a medium for travel....hence electromagnetic spectrum is based on the electromagnetic waves ..like radio waves , micro waves , etc....
electromagnetic waves are longitudinal (like a slinky).
electromagnetic radiation is caused by radiant energy generated by accelerating electrons of photons travelling as waves.
No, colour is generated by the energy state of an electron in a bond. When we see objects of different colors, it is because our retinas are being activated by electromagnetic waves of different wavelengths (or frequencies, if you prefer). Or at least because our brains think they are receiving such a signal.
Electromagnetic waves are force fields generated by vibrating, electrically charged particles. They are described mathematically by the Maxwell Equations.
Geomagnetic waves are thought to be the lowest frequency (and, therefore, the longest wavelength) electromagnetic waves in the universe. They are generated by movements in planetary structures that modulate a planet's magnetic field to create the wave. Certainly lower frequency electromagnetic waves could be generated, but they would be artificial. A link is provided for some useful information.
Electromagnetic waves are generated through frequency oscillations which usually involve a coil of wire or in an extension such as a transmitting antenna. Lasers are light, formed in a coherent beam and generally don't exhibit electromagnetic waves.
Electromagnetic waves
No it is not. It exists in air waves until it hits the ear of the listener. Even if the chord is generated by an electronic instrument, it is a real chord only after sound waves are generated in the air.
Radio waves ARE electromagnetic waves.
Electromagnetic waves are transferred by electromagnetic radiation.
first of all electromagnetic waves are energy waves. and we call electromagnetic waves RADIATION.
Electromagnetic waves
Electromagnetic waves.