Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Electromagnetic_radiation> ?p ?o }
- Electromagnetic_radiation abstract "Electromagnetic radiation (EM radiation or EMR) is the radiant energy released by certain electromagnetic processes. Visible light is one type of electromagnetic radiation, other familiar forms are invisible electromagnetic radiations such as radio waves, infrared light and X rays.Classically, electromagnetic radiation consists of electromagnetic waves, which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum. The oscillations of the two fields are perpendicular to each other and perpendicular to the direction of energy and wave propagation, forming a transverse wave. Electromagnetic waves can be characterized by either the frequency or wavelength of their oscillations to form the electromagnetic spectrum, which includes, in order of increasing frequency and decreasing wavelength: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.Electromagnetic waves are produced whenever charged particles are accelerated, and these waves can subsequently interact with any charged particles. EM waves carry energy, momentum and angular momentum away from their source particle and can impart those quantities to matter with which they interact. Quanta of EM waves are called photons, which are massless, but they are still affected by gravity. Electromagnetic radiation is associated with those EM waves that are free to propagate themselves ("radiate") without the continuing influence of the moving charges that produced them, because they have achieved sufficient distance from those charges. Thus, EMR is sometimes referred to as the far field. In this jargon, the near field refers to EM fields near the charges and current that directly produced them, specifically, electromagnetic induction and electrostatic induction phenomena.In the quantum theory of electromagnetism, EMR consists of photons, the elementary particles responsible for all electromagnetic interactions. Quantum effects provide additional sources of EMR, such as the transition of electrons to lower energy levels in an atom and black-body radiation. The energy of an individual photon is quantized and is greater for photons of higher frequency. This relationship is given by Planck's equation E=hν, where E is the energy per photon, ν is the frequency of the photon, and h is Planck's constant. A single gamma ray photon, for example, might carry ~100,000 times the energy of a single photon of visible light.The effects of EMR upon biological systems (and also to many other chemical systems, under standard conditions) depend both upon the radiation's power and its frequency. For EMR of visible frequencies or lower (i.e., radio, microwave, infrared), the damage done to cells and other materials is determined mainly by power and caused primarily by heating effects from the combined energy transfer of many photons. By contrast, for ultraviolet and higher frequencies (i.e., X-rays and gamma rays), chemical materials and living cells can be further damaged beyond that done by simple heating, since individual photons of such high frequency have enough energy to cause direct molecular damage.".
- Electromagnetic_radiation thumbnail Onde_electromagnetique.svg?width=300.
- Electromagnetic_radiation wikiPageExternalLink einleitung_hauptseite_uk.html.
- Electromagnetic_radiation wikiPageExternalLink electromagnetic-waves.
- Electromagnetic_radiation wikiPageExternalLink index.php?title=An_Introduction_to_The_Wigner_Distribution_in_Geometric_Optics.
- Electromagnetic_radiation wikiPageExternalLink electromagneticSpectrum-en.html.
- Electromagnetic_radiation wikiPageExternalLink electromagnetic-radiation.
- Electromagnetic_radiation wikiPageExternalLink text.html?unit=2&secNum=4.
- Electromagnetic_radiation wikiPageExternalLink ch11.html.
- Electromagnetic_radiation wikiPageExternalLink www.physnet.org.
- Electromagnetic_radiation wikiPageExternalLink m210.pdf.
- Electromagnetic_radiation wikiPageExternalLink introduction-to-light.
- Electromagnetic_radiation wikiPageID "9426".
- Electromagnetic_radiation wikiPageLength "69709".
- Electromagnetic_radiation wikiPageOutDegree "337".
- Electromagnetic_radiation wikiPageRevisionID "682715200".
- Electromagnetic_radiation wikiPageWikiLink Abraham–Lorentz_force.
- Electromagnetic_radiation wikiPageWikiLink Absorption_spectroscopy.
- Electromagnetic_radiation wikiPageWikiLink Acceleration.
- Electromagnetic_radiation wikiPageWikiLink Albert_Einstein.
- Electromagnetic_radiation wikiPageWikiLink Allen_Taflove.
- Electromagnetic_radiation wikiPageWikiLink Allotropes_of_oxygen.
- Electromagnetic_radiation wikiPageWikiLink Alpha_particle.
- Electromagnetic_radiation wikiPageWikiLink Alternating_current.
- Electromagnetic_radiation wikiPageWikiLink Angular_momentum.
- Electromagnetic_radiation wikiPageWikiLink Antenna_(electronics).
- Electromagnetic_radiation wikiPageWikiLink Antenna_(radio).
- Electromagnetic_radiation wikiPageWikiLink Antenna_measurement.
- Electromagnetic_radiation wikiPageWikiLink Atom.
- Electromagnetic_radiation wikiPageWikiLink Atomic_electron_transition.
- Electromagnetic_radiation wikiPageWikiLink Beta_particle.
- Electromagnetic_radiation wikiPageWikiLink Bioelectromagnetics.
- Electromagnetic_radiation wikiPageWikiLink Bioelectromagnetism.
- Electromagnetic_radiation wikiPageWikiLink Black-body_radiation.
- Electromagnetic_radiation wikiPageWikiLink Black_body.
- Electromagnetic_radiation wikiPageWikiLink Black_light.
- Electromagnetic_radiation wikiPageWikiLink Blacklight.
- Electromagnetic_radiation wikiPageWikiLink Bolometer.
- Electromagnetic_radiation wikiPageWikiLink Bremsstrahlung.
- Electromagnetic_radiation wikiPageWikiLink CONELRAD.
- Electromagnetic_radiation wikiPageWikiLink Carotenoid.
- Electromagnetic_radiation wikiPageWikiLink Carotenoids.
- Electromagnetic_radiation wikiPageWikiLink Category:Electromagnetic_radiation.
- Electromagnetic_radiation wikiPageWikiLink Category:Radiation.
- Electromagnetic_radiation wikiPageWikiLink Charged_particle.
- Electromagnetic_radiation wikiPageWikiLink Chemical_element.
- Electromagnetic_radiation wikiPageWikiLink Chlorophyll.
- Electromagnetic_radiation wikiPageWikiLink Classical_electromagnetism.
- Electromagnetic_radiation wikiPageWikiLink Compton_effect.
- Electromagnetic_radiation wikiPageWikiLink Compton_scattering.
- Electromagnetic_radiation wikiPageWikiLink Control_of_electromagnetic_radiation.
- Electromagnetic_radiation wikiPageWikiLink Crystal.
- Electromagnetic_radiation wikiPageWikiLink Curl_(mathematics).
- Electromagnetic_radiation wikiPageWikiLink DAlembert_operator.
- Electromagnetic_radiation wikiPageWikiLink DNA.
- Electromagnetic_radiation wikiPageWikiLink Del.
- Electromagnetic_radiation wikiPageWikiLink Density.
- Electromagnetic_radiation wikiPageWikiLink Differential_equation.
- Electromagnetic_radiation wikiPageWikiLink Dioxygen.
- Electromagnetic_radiation wikiPageWikiLink Dispersion_(optics).
- Electromagnetic_radiation wikiPageWikiLink Dispersion_relation.
- Electromagnetic_radiation wikiPageWikiLink Dispersive_prism.
- Electromagnetic_radiation wikiPageWikiLink Ear.
- Electromagnetic_radiation wikiPageWikiLink Ears.
- Electromagnetic_radiation wikiPageWikiLink Edward_Andrade.
- Electromagnetic_radiation wikiPageWikiLink Electric_current.
- Electromagnetic_radiation wikiPageWikiLink Electric_currents.
- Electromagnetic_radiation wikiPageWikiLink Electric_dipole.
- Electromagnetic_radiation wikiPageWikiLink Electric_dipole_moment.
- Electromagnetic_radiation wikiPageWikiLink Electric_field.
- Electromagnetic_radiation wikiPageWikiLink Electrical_conductor.
- Electromagnetic_radiation wikiPageWikiLink Electrical_reactance.
- Electromagnetic_radiation wikiPageWikiLink Electricity.
- Electromagnetic_radiation wikiPageWikiLink Electrodynamics.
- Electromagnetic_radiation wikiPageWikiLink Electromagnetic_field.
- Electromagnetic_radiation wikiPageWikiLink Electromagnetic_induction.
- Electromagnetic_radiation wikiPageWikiLink Electromagnetic_interference.
- Electromagnetic_radiation wikiPageWikiLink Electromagnetic_pulse.
- Electromagnetic_radiation wikiPageWikiLink Electromagnetic_radiation_and_health.
- Electromagnetic_radiation wikiPageWikiLink Electromagnetic_spectrum.
- Electromagnetic_radiation wikiPageWikiLink Electromagnetic_wave_equation.
- Electromagnetic_radiation wikiPageWikiLink Electromagnetism.
- Electromagnetic_radiation wikiPageWikiLink Electron.
- Electromagnetic_radiation wikiPageWikiLink Electron_volt.
- Electromagnetic_radiation wikiPageWikiLink Electrons.
- Electromagnetic_radiation wikiPageWikiLink Electronvolt.
- Electromagnetic_radiation wikiPageWikiLink Elementary_particle.
- Electromagnetic_radiation wikiPageWikiLink Emission_(electromagnetic_radiation).
- Electromagnetic_radiation wikiPageWikiLink Emission_spectrum.
- Electromagnetic_radiation wikiPageWikiLink Energy.
- Electromagnetic_radiation wikiPageWikiLink Energy_level.
- Electromagnetic_radiation wikiPageWikiLink Entropy.
- Electromagnetic_radiation wikiPageWikiLink Ernest_Rutherford.
- Electromagnetic_radiation wikiPageWikiLink Euclidean_vector.
- Electromagnetic_radiation wikiPageWikiLink Evanescent_wave.
- Electromagnetic_radiation wikiPageWikiLink Evanescent_wave_coupling.
- Electromagnetic_radiation wikiPageWikiLink Excited_state.
- Electromagnetic_radiation wikiPageWikiLink Extremely_high_frequency.
- Electromagnetic_radiation wikiPageWikiLink Extremely_low_frequency.
- Electromagnetic_radiation wikiPageWikiLink Faraday_effect.