Microwaves History of Discovery: In 1864 James Clerk Maxwell predicted the existence of electromagnetic waves/microwaves. Then in 1888 Heinrich Hertz was the first to demonstrate the existence of microwaves by building an apparatus that detected and produced microwaves in the UHF region. Also in 1894 J. C. Bose publicly demonstrated radio control of a bell using millimeter wavelengths‚ and conducted research into the propagation of microwaves. Origin(s): One origin of microwaves include a maser
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TERRESTRIAL MICROWAVE COMMUNICATION SYSTEM DESIGN DESCRIPTION OF THE MICROWAVE BEAM: 1. The microwave beam behaves like a light beam and it tends to follow a straight line and azimuth. 2. The changes on temperature‚ pressure and relative humidity tends to refract the microwave beam. So it will follow on a slightly curved path. The radio horizon exists. 3. It is diffracted when grazing over an obstacle. A small shadow area created when some of the energy is redirected. 4. The beam
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The microwave oven offers a fast and effective way to cook food in a short amount of time. They are used in millions of homes in the United States due to their speed‚ convenience‚ and ease of use in cooking food. This paper aims to discuss the science and technology of the microwave oven‚ describe some of its features‚ as well as talk about the advantages/disadvantages of the microwave oven as compared to a conventional oven or rotisserie. Microwave ovens use micro waves (or radio waves) to create
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R WHAT IS PACKET MICROWAVE? EXECUTIVE SUMMARY This white paper provides a definition of Packet Microwave radio systems and demonstrates how these systems along with Hybrid radio systems are providing an ideal solution for wireless backhaul for next generation mobile broadband networks. Packet Microwave platforms offer highly scalable solution that leverages new technology features to enable higher throughputs to keep pace with expected growth in demand. Hybrid microwave solutions can also support
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Marketing Microwave Ovens 07/08/15 Contents 1 2 Indian Food Preparation Versus Western Food Preparation 3 Values and Customs 4 Marketing Mix 5 6 07/08/15 Introduction about Microwave Oven Market Data Conclusion Introduction Introduction About Microwave Oven 07/08/15 History Discovered by Percy Spencer in 1945. By late 1946‚ the Raytheon Company had filed a patent proposing that microwaves be used to cook food. 07/08/15 History In 1967 the first countertop‚ domestic oven was introduced
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in many homes‚ it is virtually impossible to have a so called modern kitchen‚ without having a microwave oven in it. The microwave oven could probably occupy the second place (after the refrigerator)‚ in terms of dependence‚ in the kitchen. This magical piece of technology has revolutionized the way people‚ and the food industries cook food. The microwave oven is only a natural evolution of technology; to fit into this fast-paced world. As in every evolutionary process‚ one must look back at the
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A BASIC STUDY ON SIMULTANEOUS HEATING WITH MICROWAVES AND ULTRASOUND USING COAXIAL‚ TYPE APPLICATOR Abstract- A new heating method for hyperthermia using microwave and ultrasound simultaneously is proposed‚ and temperature distributions are obtained by computer simulations. The results have shown that the simultaneous use of microwave and ultrasound can heat wider and deeper region than the sole use‚ and can reduce the input power of microwave and ultrasound. This implies that we can reduce
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Microwave Oven Who invented the Microwave oven Percy Spencer invented the first microwave oven after World War II from radar technology developed during the war. Named the "Radarange"‚ it was first sold in 1946. Raytheon later licensed its patents for a home-use microwave oven that was first introduced byTappan in 1955‚ but these units were still too large and expensive for general home use. The countertop microwave oven was first introduced in 1967 by the Amana Corporation‚ which was acquired in
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experiment? After all‚ complex things such as computers‚ televisions‚ and microwaves had to have had a great impact on society. And so did simpler things‚ such as bar codes‚ plastic‚ and Velcro. By 1976‚ over 60% of U.S. households were using microwaves‚ just 30 years after its first invention. Today‚ microwaves are used all around the world‚ resulting in fresher food‚ less waste‚ and money saved. But how did the microwave get started? Who invented them and how did the inventor make such an astounding
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which a known fraction of the power is measured so that the total may be calculated. A number of coupling units used for such purpose are known as directional coupler. (5) ATTENUATORS :- It consist of a resistive wane inside the wave guide to absorb microwave power according to its position w.r.t side wall of the wave guide. Attenuation will be maximum if the wane is placed at center. (a)
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