click - Uplift Education
... ● Make the particles of the medium oscillate at frequency of the wave Examples: waves on a string, sound waves, earthquakes, etc., ...
... ● Make the particles of the medium oscillate at frequency of the wave Examples: waves on a string, sound waves, earthquakes, etc., ...
Atmospheric Radiation Basics
... ◦ Related law: a changing magnetic field induces an electric field that can drive a current; a changing electric field induces a magnetic field. ◦ EM wave: a changing in either an electric or magnetic field leads to a disturbance that is self-perpetuating, which is an EM wave. ◦ The example of movin ...
... ◦ Related law: a changing magnetic field induces an electric field that can drive a current; a changing electric field induces a magnetic field. ◦ EM wave: a changing in either an electric or magnetic field leads to a disturbance that is self-perpetuating, which is an EM wave. ◦ The example of movin ...
Wireless Power Transmission by Scalar Waves
... structures and propagates as longitudinal scalar wave in badly conductive materials such as air or vacuum. At relativistic velocities, the potential vortices are affected by Lorentz contraction. As scalar waves propagate longitudinally in the direction of an oscillating field pointer, the potential ...
... structures and propagates as longitudinal scalar wave in badly conductive materials such as air or vacuum. At relativistic velocities, the potential vortices are affected by Lorentz contraction. As scalar waves propagate longitudinally in the direction of an oscillating field pointer, the potential ...
II. Electromagnetic Radiation Basics
... airplanes, reflect off of an ionized trail left behind from a meteor and then finally make it to your radio receiver where they are converted back into sound waves. At first, it seems like visible light and radio waves have nothing to do with each other but they are in fact the same thing. Both are ...
... airplanes, reflect off of an ionized trail left behind from a meteor and then finally make it to your radio receiver where they are converted back into sound waves. At first, it seems like visible light and radio waves have nothing to do with each other but they are in fact the same thing. Both are ...
Electromagnetic Waves
... with the same frequency as the radiation. A jiggling charge is accelerating, so it radiates as well, emitting “induced” radiation with the same frequency as the “incident” radiation. This induced radiation travels outward in all directions. The total E observed at any point in space is the vector su ...
... with the same frequency as the radiation. A jiggling charge is accelerating, so it radiates as well, emitting “induced” radiation with the same frequency as the “incident” radiation. This induced radiation travels outward in all directions. The total E observed at any point in space is the vector su ...
ELECTROMAGNETIC FIELDS, the PHYSICS of LIGHT, and
... After the static situation we explore time-dependent cases which lead us to electromagnetic waves and to light. As soon as we combine matter and light we are in the general field of optics. Optics describes the response of matter to an external electro-magnetic field (matter becomes polarized ) and ...
... After the static situation we explore time-dependent cases which lead us to electromagnetic waves and to light. As soon as we combine matter and light we are in the general field of optics. Optics describes the response of matter to an external electro-magnetic field (matter becomes polarized ) and ...
Gravitational Waves
... • Penrose process: – mass falls in, splits in two – Half falls in, half falls out with more energy ...
... • Penrose process: – mass falls in, splits in two – Half falls in, half falls out with more energy ...
Maxwell, James Clerk (1831
... Maxwell, James Clerk (1831-1879). Maxwell is generally regarded as the foremost physicist of the 19th century. He is best known for his influential theory of electromagnetism, but he made important contributions to other areas of physics as well. Maxwell was born on 13 June 1831 in Edinburgh, Scotla ...
... Maxwell, James Clerk (1831-1879). Maxwell is generally regarded as the foremost physicist of the 19th century. He is best known for his influential theory of electromagnetism, but he made important contributions to other areas of physics as well. Maxwell was born on 13 June 1831 in Edinburgh, Scotla ...
A Dynamical Theory of the Electromagnetic Field
... In part III of "A Dynamical Theory of the Electromagnetic Field", which is entitled "General Equations of the Electromagnetic Field", Maxwell formulated twenty equations[1] which were to become known as Maxwell's equations, until this term became applied instead to a set of four vectorized equations ...
... In part III of "A Dynamical Theory of the Electromagnetic Field", which is entitled "General Equations of the Electromagnetic Field", Maxwell formulated twenty equations[1] which were to become known as Maxwell's equations, until this term became applied instead to a set of four vectorized equations ...
Basic Physical Processes and Principles of Free Electron Lasers
... undulator parameters. In addition to its tunability F ELs high peak power and flexible pulse structure makes FEL a very attractive device, justified by the growing number of potential application depending on the region of radiation. The most compelling case for FLE facilitites starts with the far i ...
... undulator parameters. In addition to its tunability F ELs high peak power and flexible pulse structure makes FEL a very attractive device, justified by the growing number of potential application depending on the region of radiation. The most compelling case for FLE facilitites starts with the far i ...
Eðlisfræði 2, vor 2007
... Finally we are ready to show that the electric and magnetic fields given in the introduction describe an electromagnetic wave propagating at the speed of light. If the electric and magnetic fields are to be self-consistent, they must obey all of Maxwell's equations. Using one of Maxwell's equations, ...
... Finally we are ready to show that the electric and magnetic fields given in the introduction describe an electromagnetic wave propagating at the speed of light. If the electric and magnetic fields are to be self-consistent, they must obey all of Maxwell's equations. Using one of Maxwell's equations, ...
RADIATION EMISSION FROM ACCELERATED ATOMS
... • In this work we performed a detailed analysis of the emission of radiation by accelerated atoms in vacuum. • If an atom in a grounded state vibrate with a frequency lower than all of its transition frequencies than there is no emission. • We are investigating the role of adiabaticity in our res ...
... • In this work we performed a detailed analysis of the emission of radiation by accelerated atoms in vacuum. • If an atom in a grounded state vibrate with a frequency lower than all of its transition frequencies than there is no emission. • We are investigating the role of adiabaticity in our res ...
Electromagnetic Plane Waves in Free Space
... Maxwell’s equations are coupled differential equations. A single equation may depend on both the electric field and the magnetic field. Uncoupling these equations leads to a second-order partial differential equation which is commonly referred to as the wave equation. Here this wave equation is deve ...
... Maxwell’s equations are coupled differential equations. A single equation may depend on both the electric field and the magnetic field. Uncoupling these equations leads to a second-order partial differential equation which is commonly referred to as the wave equation. Here this wave equation is deve ...
Electromagnetic radiation
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.