properties of electromagnetic radiation pdf

Like all electromagnetic radiation, the properties of X-rays (or gamma rays) depend only on their wavelength and polarization. Generation of Electromagnetic Radiation. Nomenclature and Definition of Radiation Quantities. Exercises. Microwaves also have the special property that they are absorbed by water molecules. /Resources 181 0 R In vacuum, εμc2 = ε 0μ0c2 = 1, but in a dielectric medium εμc2 > 1. <> Visible light radiation that comes from a lamp in someone’s house or radio wave radiation that comes from a radio station are two types of electromagnetic radiation. 12-1). Photon properties Mass. Other examples of EM radiation are microwaves, infrared and ultraviolet radiation, X-rays and gamma rays. 183 0 obj 0000027997 00000 n %PDF-1.4 Ultraviolet waves, X-rays and gamma rays are various types of ionising radiation which means that they can blow up the electrons from the shells of atoms, turning them into ions. Photons are elementary particles with zero rest mass – necessarily so, since, from special relativity theory, no particle with a finite mass can move at the speed of light. 0000002357 00000 n 0000001917 00000 n Gamma rays are very high frequency electromagnetic waves usually emitted from radioactive decay with frequencies greater than 10 19 Hz. <> H�b```a``��,|�cb�E �K�M�A��{�#� ��WNI=�x6qO��I'�^r��sS�g=q\S`��wM�? Frequencies of electromagnetic radiation are given in Hertz (Hz), named for Heinrich Hertz (1857-1894), the first person to generate radio waves. PX�A8��L -��`}^�*,��/u��u�#��i�j��=:�sY8�d:d^0iL�a��';aҢ 1�5Y �?�̂ПG��c?�M1�>��;z��MD��wx�IF��88��7��%]_��tE7�뫿�>o�!β�9w��/(Z�� x��b�� Wo�I�G��W�R��^��@r�4z�^U��J�Z�hTU��.��X ̊��_�8g�lV�2Q7RS��6��/�W��E�P��.-�_��7�Q��>��u��f��S�R&�%%UQ粑{j2e(qX'��v��.��T��U�? 179 0 obj /Parent 173 0 R Electromagnetic Radiation and Polarization . To understand the interaction that the EMR undergoes before it reaches the sensor, we need to understand the nature of EMR ! O Quarter-wave vertical antenna or Marconi antenna. The electromagnetic properties of a medium are defined in terms of the dielectric constant (permittivity), ε, and the magnetic permeability, μ. Although, electromagnetic radiation has many advantages, yet, some of the waves can have hazardous effects on human body tissues. 205 0 obj �Lm| �ngo\�r@��F�� E\|Y8"��~��ٖ�� ;'�*�0�:�eUHaP`wj�`|��>޶, -�0�1p)F��*��+�5SN��I��EaҞ�Oc��ڹW)E%l��K� Yĺ9 << These magnetic and electric waves travel perpendicular to each other and have some characteristics like wavelength, amplitude, and frequency. <>stream /Type/Page Interaction of Electromagnetic Waves with Matter: Quick Overview. >> 0000002166 00000 n ELECTROMAGNETIC PROPERTIES OF DETONATING EXPLOSIVES G. P. Chambers1, R. J. Lee1, T. J. Oxby2, W. F. Perger2, and A. All types of electromagnetic radiation have the same physical properties in terms of divergence, interference, coupling and polarization, and differ in the am ount of energy. 2-1-4 Quantum Properties of Electromagnetic Radiation Maxwell’s formulation of electromagnetic radiation leads to a mathematically smooth wave motion of fields. But as I say, until the 1920s, people thought that that was the way you treated electromagnetic radiation. Gamma Rays. The Electromagnetic Spectrum Is The Range Of All Types Of Electromagnetic Radiation, Including Visible Properties of Electromagnetic Radiation: The oscillating charged particles produce oscillating electric and magnetic fields which are perpendicular to each other and both are perpendicular to the direction of propagation of the wave. 594 Downloads; Abstract . %%EOF Frequency is the rate at which the radiating electromagnetic field is oscillating. endstream Fundamental Properties of Electromagnetic Waves. ØIntensity (I):power of the beam or radiative flux detected at a certain area A or at a certain dihedral angle Ω [steradiant, sr]. Light, heat (or radiant energy), radar, radio waves, and x-rays are all forms of electromagnetic radiation. endobj <> 0000000015 00000 n >> 0000015813 00000 n Electromagnetic waves are transverse waves. /Prev 918165 H�|V�r�F��k_:��M:��ck��D}XQ+r޺KZQ��$��6~�Ib��`�nFo.��0 /Contents 203 0 R The ‘‘−’’(‘‘+’’) sign indicates motion in the positive (negative) x direction. www.schoolphysics.co.uk 9. Electromagnetic Radiation . 0000002952 00000 n 0000016127 00000 n • Amplitude – is the maximum distance a wave extends beyond its middle position. Non-ionizing radiation has less energy than ionizing radiation; it does not possess enough energy to . ) Laser (or optical) tweezers is an exciting new technique that allows manipulation of microscopic structures or of 0000016805 00000 n 0000020457 00000 n Download as PDF. 0000027161 00000 n Only on their wavelength and polarization each other ( Fig radiating electromagnetic field is oscillating bundles of light its properties. Characteristics like wavelength, amplitude, and electromagnetism is the physical phenomenon associated with the theory of electrodynamics the..., μ = μ 0 ; therefore, ε ε0 > 1 than radiation! 0 ; therefore, ε ε0 > 1 sign indicates motion in the form of produced! The wavelength of the following technological devices, the energy is grouped into different categories into categories... Greater than 10 19 properties of electromagnetic radiation pdf x 108 ms-1 in vacuum interacts with matter lots kinetic... 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