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The most powerful producer of EM waves is probably your microwave oven. Other items include Wi-Fi & bluetooth devices, mobile phones, remote central locking car keys, R/C toys, wireless baby monitors, wireless headphones, smart electricity meters & two way radios.
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Electric charges in oscillating motion do. any movement of charged particles
Light or electromagnetic radiation (EMR)
Any electric charge undergoing acceleration will produce Electromagnetic waves. This is by far the most common way.If an oscillating electric field is synchronized with an osc…illating magnetic field of exactly the same frequency a beam of light will be produce where the two fields are orthogonal in all dimensions.
In classical electrodynamics, electromagnetic radiation, whether radio, infrared, visible light, ultraviolet or ionizing radiation (x-rays and gamma rays), consists of two fie…lds which are varying with time: the magnetic field and the electric field. In an electromagnetic wave, the two fields are perpendicular to each other and both are perpendicular to the direction of the radiation. Electromagnetic waves clearly carry energy because they exert forces on electrons when they encounter them. But, in the waves themselves, there is no matter which is vibrating, just the fields. That is how electromagnetic waves can travel through a vacuum, where there is no matter. An electromagnetic wave is generated by the acceleration of charge. If charge is constantly changing its direction, as in an oscillating electric circuit, a continuous stream of electromagnetic waves are generated. The same effect works in reverse: when an electromagnetic wave is incident upon charge, it exerts a force that causes the charge to accelerate. A stream of electromagnetic waves cause the charge to continually reverse direction which, in a conductor, can be detected as an oscillating current. In a medium the wave 'signal' is transmitted by particle polarization and atomic scattering, at a rate subject to Fresnel's refraction coefficient 'n'. Between those particles, and in a vacuum, nobody used to know. It used to be called the 'luminiferous ether', but the Special Theory of Relativity, which said motion and speed was only relative and could not be in relation to any background, showed that the ether didn't exist. Amongst the many things that relativity explained that were before unexplainable was the constancy of the speed of light with respect to moving receivers. Many have pointed out relativity's logical inconsistencies (giving rise to paradoxes), but since relativity has been shown to be correct in every single one of the countless tests of its validity, no alternative theory explaining the constant speed of light can replace it. One of the biggest challenges in modern physics is to unite quantum field theory, which works beautifully for electromagnetism, with relativity, which works beautifully for gravity.
With an Electric Field.
electromagnetic waves are produced by the motion of electrically charged particles. electromagnetic waves are also called electromagnetic radiation because they radiate from e…lectrically charged particles.
Radar uses electromagnetic waves to find the distance between to points. The speed of electromagnetic waves is the speed of light, 300 Millinmeters/second or 600 Million Nau…tical Miles per hour or 10 Million Nautical Miles per minute or 6 microsecond per mile.. The distance is r=ct where c is the speed of light. Radar finds the distance by r=c2t, the 2t is ther round trip time of radar. For example it takes light 500 seconds to arrive on earth from the sun. this is about 8 minutes. A radar on earth boucing a signal off the sun would take 16 minutes to bounce back; 8 minutes to get to the sun and 8 minmutes to get back. Police Radar travels at the same speed but the distances are much smaller but bounce time is still 12 microsecond per mile. So if the bounce time is is 36 microseconds the car is 3 miles away. Using a little algebra the radar can take two hits and figure out how fast your car is moving.
Electromagnetic waves are not produced, they exsist as part of the electromagnetic force (one of the four knows forces, like gravity), science still does not have an answer to… how the four knows forces first began, this is one of the reasons for the large hadron collider, to try and find out how the universe came into exsistance.
electromagnetic waves are produced by the changes in the sub atomic level when heat or electricity is applied to an atom electron which is present in lower energy level wi…ll obsorbs energy and jumps in to higher energy level after that it again jumps in to lower energy level.when the electron is jumping in to lower energy level it emitts energy in the form of photons.these transmission of photons is said to be electromagnetic waves.in the electromagnetic waves electric and magnetic fields are perpendicular to each other and also perpendicular to the direction of wave propagation. EM waves can also be produced by the action of a radio-frequency current in an antenna. Radio transmitters produce power at a single frequency and the antenna acts as a tranducer taking the power from the transmitter and converting it into power that is radiated into space and can be received at a distant point.
Visible light because some of the energy that reaches the earth from the sun is visible light. The visible light from the sun is white light. White light is visible light of a…ll wavelengths combined. Light from lamps in your home as well as from the fluorescent bulbs in your school is also white light.
Electromagnetic waves do produce heat. It depends a bit on the frequency and of course the strength of them as to how much heat that is produced. It also depends on what mediu…m the waves travel through. Example: A microwave oven heats up the food by interacting with water molecules, making them vibrate. This vibration causes friction and friction turns into heat. This is done via electromagnetic waves. These waves are not absorbed by glass or pottery, hence they stay cold.
Not exactly. Actually, no. Photons are chunks of electromagnetic waves. As such, they do not produce EM waves, they ARE those waves. A photon inter-acting with some other part…icle could result in other photons -- ie, a different kind of EM wave -- being created.
electromagnetic waves are produced by the motion of electrically charged particles. electromagnetic waves are also called electromagnetic radiation because they radiate from e…lectrically charged
Current flows through any conductor when electromagnetic waves fly past it. That's how a radio antenna works.
When a charge is stationary then an electric field exists. If that charge moves uniformly in space then magnetic field arises around the direction of movement of that charge. …If the same charge gets accelerated then electromagnetic disturbance is produced in the space. So any charge oscillating or moving in a curved path would produce electromagnetic disturbance. Such a disturbance is known as electromagnetic waves.