What are Waves?
... • The up-and-down motion was caused by the peaks and valleys of the ripple that moved from where the splash occurred. • These peaks and valleys make up water waves. ...
... • The up-and-down motion was caused by the peaks and valleys of the ripple that moved from where the splash occurred. • These peaks and valleys make up water waves. ...
Waves What happens ? What happens if we continue to move hand
... 1. Main characteristics of waves: f, v, λ, A, T. 2. Frequency f is a “property” of the source. 3. Wave speed is a “property” of the medium. 4. Every point perturbed by the wave becomes a source for further wave 5. All perturbations that we discuss are linear. Therefore, we have the superposition pri ...
... 1. Main characteristics of waves: f, v, λ, A, T. 2. Frequency f is a “property” of the source. 3. Wave speed is a “property” of the medium. 4. Every point perturbed by the wave becomes a source for further wave 5. All perturbations that we discuss are linear. Therefore, we have the superposition pri ...
The Maxwell Equations, the Lorentz Field and the Electromagnetic
... electromagnetic induction due to cut flux intervenes. This consideration can be related for example to the motion whether of a single particle or of a particle beam in a field of magnetic induction, but it is also useful in order to describe the relativistic behavior of Maxwell’ s equations with res ...
... electromagnetic induction due to cut flux intervenes. This consideration can be related for example to the motion whether of a single particle or of a particle beam in a field of magnetic induction, but it is also useful in order to describe the relativistic behavior of Maxwell’ s equations with res ...
Open Electives for Semester V (PHYSICS)
... empty space by means of electromagnetic fields; Lorentz force. (7 lectures) Electromagnetic waves: The entire electromagnetic spectrum, ranging from X-rays, ultraviolet, visible, infrared, microwaves to radio waves; Electromagnetic wave equations in terms of electric scalar potential and magnetic ...
... empty space by means of electromagnetic fields; Lorentz force. (7 lectures) Electromagnetic waves: The entire electromagnetic spectrum, ranging from X-rays, ultraviolet, visible, infrared, microwaves to radio waves; Electromagnetic wave equations in terms of electric scalar potential and magnetic ...
science 106
... (b) Magnetic field lines point from positive to negative electric charges. (c) Magnetic field lines point along the direction of force on the north pole of a tiny magnet. (d) Magnetic field lines point from negative to positive charges. (12)(3 pts) According to Oersted’s discovery (a) static electri ...
... (b) Magnetic field lines point from positive to negative electric charges. (c) Magnetic field lines point along the direction of force on the north pole of a tiny magnet. (d) Magnetic field lines point from negative to positive charges. (12)(3 pts) According to Oersted’s discovery (a) static electri ...
13. Maxwell`s Equations and EM Waves.
... "A remarkable misconception on this point seems to be somewhat generally held. It seems to be imagnied that self-induction is harmful to long-distance telephony. The precise contrary is the case. It is the very life and soul of it, as is proved both by practical experience in America and on the Cont ...
... "A remarkable misconception on this point seems to be somewhat generally held. It seems to be imagnied that self-induction is harmful to long-distance telephony. The precise contrary is the case. It is the very life and soul of it, as is proved both by practical experience in America and on the Cont ...
HG B J4C ELECTROMAGNETISM 10 credits
... This module introduces electromagnetism by appealing to familiar concepts such as charge and current. The fluxes of these quantities are related to fields via the Maxwell equations. These equations are obtained in differential and integral form and applied to examine the behaviour of the electromagn ...
... This module introduces electromagnetism by appealing to familiar concepts such as charge and current. The fluxes of these quantities are related to fields via the Maxwell equations. These equations are obtained in differential and integral form and applied to examine the behaviour of the electromagn ...
Toneev
... The magnetic field and energy density of the deconfined matter reach very high values in HIC for √sNN≥11 GeV satisfying necessary conditions for a manifestation of the CME. Under some restrictions on the magnetic field and energy density, the model describes the observable CME at two measured energi ...
... The magnetic field and energy density of the deconfined matter reach very high values in HIC for √sNN≥11 GeV satisfying necessary conditions for a manifestation of the CME. Under some restrictions on the magnetic field and energy density, the model describes the observable CME at two measured energi ...
Lecture 2
... and transfers it to other forms of energy. Scattering is a process that does not remove energy from the radiation field, but may redirect it. NOTE: Scattering can be thought of as absorption of radiant energy followed by reemission back to the electromagnetic field with negligible conversion of ener ...
... and transfers it to other forms of energy. Scattering is a process that does not remove energy from the radiation field, but may redirect it. NOTE: Scattering can be thought of as absorption of radiant energy followed by reemission back to the electromagnetic field with negligible conversion of ener ...
CYK/2006/PH406/Tutorial 5 1. Calculate the probability of excitation
... 6. Calculate how may photons per second are radiated from a monochromatic source, 1 watt in power, for the following wavelengths (a) 10 m (radio wave) (b) 10 cm (microwave) (c) 5890 A (optical waves) (d) 1 A (x-rays). At a distance of 10 m from the source, calculate the number of photons passing thr ...
... 6. Calculate how may photons per second are radiated from a monochromatic source, 1 watt in power, for the following wavelengths (a) 10 m (radio wave) (b) 10 cm (microwave) (c) 5890 A (optical waves) (d) 1 A (x-rays). At a distance of 10 m from the source, calculate the number of photons passing thr ...
1. Choose the best answer for each of the following questions.
... "We can scarcely avoid the conclusion that light consists in the transverse undulations of the same medium which is the cause of electric and magnetic phenomena." The equations predicted that electromagnetic radiation could exist with any wavelength. The various colors of light have wavelengths less ...
... "We can scarcely avoid the conclusion that light consists in the transverse undulations of the same medium which is the cause of electric and magnetic phenomena." The equations predicted that electromagnetic radiation could exist with any wavelength. The various colors of light have wavelengths less ...
PH 1120 P
... devices scattered throughout your text and you can learn still more about them from a variety of internet sources. The main laws of electromagnetism, which are associated with the names of Coulomb, Gauss, Ampere and Faraday, can be summarized as a set of four partial differential equations known as ...
... devices scattered throughout your text and you can learn still more about them from a variety of internet sources. The main laws of electromagnetism, which are associated with the names of Coulomb, Gauss, Ampere and Faraday, can be summarized as a set of four partial differential equations known as ...
Waves
... Discovery of x-rays: Roentgen discovered the X rays during the night of November 8 1895. He published this breakthrough in December 28, 1895 to the Physical-Medical Society of Wurzburg in a paper entitled "A new species of rays.“ Roentgen showed that the ionizing radiation emitted by a cathode withi ...
... Discovery of x-rays: Roentgen discovered the X rays during the night of November 8 1895. He published this breakthrough in December 28, 1895 to the Physical-Medical Society of Wurzburg in a paper entitled "A new species of rays.“ Roentgen showed that the ionizing radiation emitted by a cathode withi ...
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.