Radio waves theory was discovered by an Indian Jagdish Bose. But why Marconi's name is associated with it?
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Marconni utilised Bose's discovery in providing a medium that could transmit these waves to a receiver unit (wireless{Radio}) The rest as they say, is history.
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The main concept to understand is that of a carrier wave.  The radio wave is that.  A radio wave is electro-magnetic radiation, which, unlike other waves, is not a vibration within a medium, like sound waves for example, which are the propagation of alternating high and low pressure within the air, or other fluid media.  Electro-magnetic waves are a self propagating electro-magnetic effect which can travel even in a vacuum.  Electro-magnetic radiation is a pulsing stream of energy where the pulses are at a constant frequency.  What we perceive as different phenomenon are in fact the same electromagnetic radiation but at different frequencies.  Microwaves, Radio, Ultra-violet, Visible Light, and Infra-red, are all electro-magnetic radiation moving down the scale from high to low frequency.\n\nThe radio transmitter sends out radio waves at a specific frequency or band of frequencies.  The aerial of the receiver develops tiny electric currents in it as the radio wave flows past it.  These are pulsing currents at the same frequency as the radio wave, but these pulses are not in themselves the content of speech or music.  This content, or signal, is carried in the wave, hence the concept of the carrier wave.\n\nIt is easier to understand Amplitude Modulation or AM radio so I will restrict myself to that.  If you imagine a radio wave as a very long string with the pulses like beads on it, all spaced at precise intervals, then imagine that the beads slowly getter bigger and smaller along its length.  Each bead is a packet of energy in the wave and all occur at the same frequency, but where the beads get bigger there is more energy in the packet.  It only takes a little more imagination now to see how the pattern of a sound wave can be represented by the bulging out of the beads, and their getting smaller.  This is called the amplitude.\n\nLooking at it in practical terms, at the transmitter end sound is converted in the microphone into a corresponding pattern of changes in the current flowing through the microphone.  That is your signal.  That signal which is at a low electrical power, is used to create the same pattern but in a circuit of much higher electrical power - that is what an amplifier does.  The device used to transfer the pattern is called a transistor, which uses the low powered circuit to control the flow in the high powered circuit.\n\nThe amplified signal is fed to the transmitter aerial, so now that pattern of electrical energy, identical to the pattern of the sound picked up by the microphone, comes out of the aerial as radio waves, with the pattern held in the varying amplitude of the radio wave.\n\nNow comes a trick to follow.  If there are thousands of transmitters all radiating radio waves all over the place, how come your radio only picks up the one signal.  This is where the tuner comes in.  The principle of radio tuning depends on the opposite properties of coils and capacitors.  I don't know if you know what these are, but it doesn't matter if you don't.  Both of these devices have a special kind of resistance to electricity known as impedance.  Impedance only operates where the current is varying.  The voltages and currents in our radio Ariel will be varying at exactly the same frequency as each radio wave it is exposed to, so if we pass that current through either a coil or a capacitor there will be an impedance in the circuit.  Now the impedance of the coil increases as the frequency gets higher and the impedance of the capacitor gets higher as the frequency gets lower.  An AM tuning circuit simply passes the signal current through both a coil and a capacitor at the same time, and the capacitor is a mechanically variable one, so by turning a knob you can increase or decrease the capacitance.  The trick here is that as the capacitance changes the circuit will show least impedance to a specific frequency compared with all the others, so provided the frequencies are not too close, as the law requ
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Electromagnetism is the what allows information contained in electric circuits to actually leave the circuits. Althought he technique by which the information (electric signal) actually leaves the circuit is quite complicated, suffice it to say, that using an antenna, this information can be allowed to travel through air.\nCo-incidentally, even light happens to be an electromagntetic wave. So, you can say that human beings owe their vision to electromagnetism.\n\nMircowaves - an electromagnetic phenomenon allow you to exhange information with satellites, besides of course, allowing you to cook food.\n\nThink about it! Radio, Mobile phone communication etc. all owes its existence to electromagnetism.\n\nThis is course is with respect to electromagnetic wave phenomeona. When you actually think about the fact that one can create artificial magnetics using electric current, the possibilities are limitless
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No, it is not.\n\nAn antennae is a reacive circuit normally tuned to resonance at the transmitting frequency. In such case it will produce a damped series of oscillations when energised by a pulse. Theoretically it would not, if the energising signal was a perfect sine wave and cut off at the zero crossing point exactly. However no wave generated by a 1Ghz oscillator will be a perfect sine wave and therefore the tendency of the antenna circuit to oscillate will produce at least a blurring or extension of the waveform beyond the single cycle.\nIf the antenna was not resonant then it would produce reflective waveforms and these will oscillate until their energy is dissipated. \nConsidering the fact that it is not possible to create any antenna system (including the transmission line) without some SWR, then the answer to your question is no.
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Because up to a few years ago it was always the easiest and cheapest method to transmit and receive broadcasts with.  The first system invented (discovered ?) by Marconi was an analogue system and it has stayed that way since.  \n\nActually, the terms 'analogue' and 'digital' only apply to the modulation methods used;  once the modulated signal leaves the radiating antenna it travels as an analogue electro-magnetic wave through space regardless of which type of modulation is used.
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It is reputed to have been Lord Kelvin.  The Michelson-Morley experiment (to find the true reference frame of the universe - the failure of which led to Einstein's discovery of special relativity) and the solution to the blackbody radiation equation (which led to the "ultraviolet catastrophe" and Planck's discovery of quantum mechanics) was all that was left, other than extending the constants to additional decimal places.\n\nHowever, Feynman claims this is more myth than fact.
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http://www.physics.gatech.edu/advancedlab/labs/frankhertz/\n\nhttp://www.physics.sfsu.edu/~rrogers/Phys%20321/5_Frank.htm\n\nhttp://www.physics.ucla.edu/demoweb/demomanual/modern_physics/quantum_mechanics_and_atomic_physics/frank_hertz_experiment.html
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Radio was inventi by Marconi\n\nTelevision by John Logie Bierd
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The RF waves emanating from an antenna are generated by the movement of electrical charges in the antenna. Electromagnetic waves can be characterized by a wavelength and a frequency. The wavelength is the distance covered by one complete cycle of the electromagnetic wave, while the frequency is the number of electromagnetic waves passing a given point in one second. The frequency of an RF signal is usually expressed in terms of a unit called the "hertz" (abbreviated "Hz"). One Hz equals one cycle per second. One megahertz ("MHz") equals one million cycles per second.
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Sorry this is not a question.  Please rephrase so we can figure out what it is that you want to know.  I hope this helps you.\n\nJohann Christian Andreas Doppler (November 29, 1803 in – March 17, 1853) was an Austrian mathematician and physicist, most famous for the hypothesis of what is now known as the Doppler effect which causes the frequency of a wave to apparently change as its source moves toward or away from the observer.
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You haven't kept up with the latest scientific\ndiscoveries.  Recently, well, in 1887, Albert\nMichelson and Edward Morley proved that no\nmedium (then called "ether" or "aether") was\nneeded for the propagation of electromagnetic\nradiation.
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(1) there is no problem with the concept\n\n(2) the concept refers not to "a wave of particle". But to the fact that the wave IS the particle, and the particle IS the wave.  More precisely, the particle (in our everyday definition, i.e. a small bit of matter) does not really exist at a precise point in space, but it is to be found in a given region, and the probability of finding it there is proportional to the absolute value of its "wave function"\n\nyou seem to view this as little bits of matter / light undulating on top of a wave - that's wrong.\n\n\nhistorically, what happened is that various experiments seemed to suggest that SOMETIMES it seemed that you had a wave, and other times, a particle.\n\nThe most famous one is the double slot experiment.  Incoming light will go through the two slots, and lights re-emitted after having gone through each slot will interfere with each other, and on a screen you will observe an interference pattern, i.e. a series of bright and dark bands.\n\nso then someone suggested to use light of such low intensity so that you'd literally emit one photon at a time.  Hoping to not get any interference picture - since each photon could not interfere with anything.\n\nbut what happened was that the photons would arrive at various points on the screen, and little by little, their accumulation would reconstruct the interference picture\n\nthis is what caused people problems - until they invested quantum physics, which deals perfectly with this.
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microwave are the same as radio waves \nsatellite are when you transmit to a satalite \nradio waves are basicly any sound. \nlaser is energy in the form of light, \noptical fiber is used for telephones which transport light instead of radio waves, which is much faster\ninfared it think is just a laser used to transfer data
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Nikolai Tesla first had the patents. The carrier wave, amplification, tuning. He didn't finish his working model so Marconi gets credit.\nPoke around the Internet for both.\nNikolai Tesla and Marconi
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They are all the same thing..... Electromagnetic waves. Scientist called the waves with  longer wavelengths radio waves and the waves with the shorter wavelengths gamma rays. Visible light is somewhere in between.
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Rudolph Virchow?\n\nhttp://scienceworld.wolfram.com/biography/Virchow.html\nhttp://en.wikipedia.org/wiki/Rudolf_Virchow
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pulsar or neutron star that give out radio wave