#Which type of electromagnetic radiation cannot be focused tv#
Turn your living room into wireless charging station soon New York, Jan 9 (IANS) What if you can remotely charge your smartphone with the flat-screen TV in your living room? If we believe a team of US engineers, turning your living room into a wireless charging station is not a far-fetched dream.In search of the unknown: The tussle between paranormal researchers and rationalists Ghost hunters and paranormal researchers are trying to find the science behind paranormal occurrences.India vs China: How their space programmes are matching up The mission to launch IRNSS-1H on board PSLV-C39 ended in failure in August last year after the satellite got stuck in the heat shield.Examples of EM waves are radio waves, microwaves, infrared waves, X-rays, gamma rays, etc. This is known as the electromagnetic spectrum. Electromagnetic waves can be split into a range of frequencies. The highest point of a wave is known as 'crest', whereas the lowest point is known as 'trough'. This means that they are measured by their amplitude (height) and wavelength (distance between the highest/lowest points of two consecutive waves). Mechanical waves (like sound waves or water waves), on the other hand, need a medium to travel.
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It does not need a medium to propagate or travel from one place to another. An electromagnetic wave can travel through anything - be it air, a solid material or vacuum. However, they are capable of showing interference or diffraction. They are deflected neither by the electric field, nor by the magnetic field. They are also perpendicular to the direction of the EM wave.ĮM waves travel with a constant velocity of 3.00 x 108 ms-1 in vacuum. The electric field and magnetic field of an electromagnetic wave are perpendicular (at right angles) to each other. They are hence known as ‘electromagnetic’ waves. In other words, EM waves are composed of oscillating magnetic and electric fields.ĭescription: Electromagnetic waves are formed when an electric field comes in contact with a magnetic field.
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Part of this spectrum covers what we call visible light (detectable by our eyes). Sunlight: electromagnetic radiation is a wide spectrum.Total Internal Reflection in Optical Fibre.Newton’s and Huygens’ Theories of Light.Einstein's Theory of Special Relativity.Centripetal Acceleration and Centripetal Force.Electromagnetic Radiation and Quantum Phenomena.Galileo's Leaning Tower of Pisa Experiment.Mechanical Energy in Simple Harmonic Motion.Kinetic Energy in Simple Harmonic Motion.Magnetic Flux and Magnetic Flux Linkage.Potential Energy and Energy Conservation.Conservative and Non Conservative Forces.