wave nature of electromagnetic radiation given by

The relation between the frequency ω of oscillations of an electric field E and magnetic field H and the wavelength λ of an electromagnetic wave is given by the equation λ = 2πc/ω. Given their transverse nature, both mechanical and electromagnetic waves are defined by their wavelength, frequency and speed. WAVELENGTH Planck Radiation Law Let us now consider the application of statistical thermodynamics to electromagnetic radiation. The value of radiation pressure for the visible is 7 푥 10-6 Nm-2. When we talk of electromagnetic radiation as a particle, we refer to photons, which are packets of energy. Perhaps the most significant prediction of Maxwell’s equations is the existence of combined electric and magnetic (or electromagnetic) fields that propagate through space as electromagnetic waves. It means the force because of the radiation pressure of visible light on the surface area of 10 cm2 is ( 7 푥 10-6) x ( 10 푥 10-4 )= 7 푥 10-9 N. Thus the energy carried and the intensity I of an electromagnetic wave is proportional to E 2 and B 2. The number of crests that pass a given point within one second is described as the frequency of the wave. Radio waves, X rays, and gamma radiation are included in a single electromagnetic-wave spectrum (Figure 1). It is one of the four fundamental interactions (commonly called forces) in nature, together with the … We can next apply Maxwell’s equations to the description given in connection with Figure 16.2.3 in the previous section to obtain an equation for the E field from the changing B field, and for the B field from a changing E field. He suggested that when electrically charged particles move with an acceleration alternating electrical and magnetic fields are produced and transmitted. According to Maxwell's theory, an electromagnetic wave is a coupled self-sustaining oscillation of electric and magnetic fields that propagates though a vacuum at the speed of light, . Electromagnetic spectrum includes radio waves (FM and AM), microwaves, infrared lights, ultraviolet lights, X – rays, gamma rays and visible light. 9 Electromagnetic radiation has the dual nature: its exhibits wave properties and particulate properties. Light • Light is a form of energy known as electromagnetic radiation. A particle of light is called a photon. The electric field associated with an electromagnetic wave in vacuum is given by E=i 40 cos (kz-6x10 8 t), where E, z= and t are in volt/m, metre and second respectively. Chemistry Journal 2.02 Electromagnetic Radiation Driving Question: How does the nature of particles, waves, and energy explain phenomena such as lightning? Wave Motion • Wave motion is the transfer of energy without matter. In the mid-nineteenth century, physicists actively studied absorption and emission of radiation by heated objects. Although classical physics had explained most of its behavior as a result of its wave nature, Planck and Einstein showed that electromagnetic (EM) radiation behaves as if its energy is carried at the nanoscale in small bundles, or quanta (plural of quantum), of energy with particle-like characteristics. The velocity of electromagnetic radiation is the velocity of light (c), ie where, μo is the permeability and is the permittivity of free space. The number of complete wavelengths, or cycles, that pass a given point in 1 second is the frequency of the wave (frequency=cycles/second) Electromagnetic radiation has both electric and magnetic properties. For example, the standard radio broadcast band extends from a frequency of 550 kHz to 1600 kHz. • Light travels through the vacuum of space – unlike sound. He also produced electromagnetic waves and determined their wavelengths by measuring the distance between two successive nodes. A. The spectrum of electromagnetic radiation is given below – Photon. Planck’s Quantum Theory of Electromagnetic Radiation Some of the experimental phenomena such as diffraction and interference can be explained by the wave nature of the electromagnetic radiation. One method of observing this wave nature characteristic is through the interference and diffraction of electromagnetic radiation. The particle nature of electromagnetic radiation \n . These are called thermal radiations. Electromagnetic radiation is so-named because it has electric and magnetic fields that simultaneously oscillate in planes mutually perpendicular to each other and to the direction of propagation through space. A wave with two cycles that pass a point in one second has a frequency of 2 Hz. Electromagnetic Radiation Wave-particle duality § Nature of a wave § Characterized by a frequency (ν) or wavelength (λ) § Velocity = c (in a vacuum) § Photons (particle) § A discrete quantity of electromagnetic radiation § Velocity = c (in a vacuum) § Rest mass = 0 The wave-like property of electromagnetic radiation is due to the periodic oscillations of these components. A wave-type experiment shows the wave nature, and a particle-type experiment shows particle nature. Fields (ESADJ) Accelerating charges emit electromagnetic waves. The Wave Nature of Light. Atomic Line spectra B. Electron Diffraction C. Photoelectric Effect D. X-ray Diffarction. A wave-type experiment shows the wave nature, and a particle-type experiment shows particle nature. Explain phenomena such as lightning fields are produced and transmitted the particle nature at the time. Its behavior answers ( 1 ) Shyann 10 January, 17:08 wave properties and (. 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