|
Transmission of energy through a vacuum or using no medium is accomplished by electromagnetic waves, caused by the osscilation of electric and magnetic fields. They move at a constant speed of 3x108 m/s. Often, they are called electromagnetic radiation, light, or photons.
|
|
Depending on the circumstances, electromagnetic radiation may behave as a wave or as particles.
|
|
|
Electromagnetic radiation can be described in terms of a stream of photons, which are massless particles each traveling in a wave-like pattern and moving at the speed of light. Each photon contains a certain amount (or bundle) of energy, and all electromagnetic radiation consists of these photons.
|
|
|
As it was explained in the Electromagnetic Spectrum - Level 1 of Imagine the Universe!, electromagnetic radiation can be described in terms of a stream of photons, each traveling in a wave-like pattern, moving at the speed of light and carrying some amount of energy.
|
|
|
Light and other electromagnetic waves moving charges back and forth will produce oscillating electric and magnetic fields, and these travel at the speed of light. It would really be more accurate to call the speed "the speed of an electromagnetic wave", because light is just one example of an electromagnetic wave.
|
|
|
Yes, all electromagnetic radiation -- from radio waves to x-rays -- travel at the speed of light. In empty space this speed is approximately 300,000 kilometers per second!
|
|
|
Click here to learn more about the connection between wavelength, frequency and the speed of light. For the advanced student: Learn more about wave shapes in order to understand microwaves, radio and TV waves, produced by oscillating currents. Leaving Electromagnetic Radiation...
|
|
|
Science question: What speed does electromagnetic waves travel through air? Index of refraction of air is very low, like 1.0003. The index of refraction is...
|
|
|
What are electromagnetic waves ? Light, microwaves, x-rays, and TV and radio transmissions are all kinds of electromagnetic waves. They are all the same kind of wavy disturbance that repeats itself over a distance called the wavelength.
|
|
|
Celestial Speed of Electromagnetic Waves; Radio signals from Io, one of the Galilean moons of Jupiter, were monitored for a period of six months to duplicate teh experiment that Olaus Roemer did in the Comparison is made between this method and that used by Olaus Roemer in his experiment with light waves.
|
Copyright © 2010, Dictionary.com, LLC. All rights reserved.
Related Topics
