I know what a wave is and where and how a radio wave is used. i need to know how to define a radio wave.
213606
Electromagnetic radiation in the 1 to 1000 m wavelength range.
14258
either sound, waves or air.
177378
How can the heat and radio waves be good for you brain. Just buy yourself a hands-free and you will be set.
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A very good, complicated and interesting question.  Katy brought up a good point.  You could write entire book on how cell phones has changed daily life around the world.  Just think of how many business decisions are now done in real time rather than getting to a land line (telephone.)  Or how about a reporter in the field giving a story before he or she has set up the equipment to broadcast the story?  Or how about the reporting of the Iraq war where no broadcasting equipment was even available?  With cell phones, many of which now have cameras built into them, people are taking pictures of crimes as they occur.   This is also true for reporting crimes in areas that didn’t normally have phone access.\n\nSince you didn’t speak of which wireless technology you were referring to I can only assume you are talking about all wireless technology so I will discuss some others here.\n\nIn the last few years wireless networking for home computing has really taken off.  It has become much more affordable and easier to configure for the average person.  Now here is where it gets interesting.   Many new laptops have the ability for you to use a wireless networking adapter in them or with them.  Some cities, including mine in Anaheim California, are going to make the whole city wireless!   They are going to install wireless Internet transmitters all over Anaheim so everyone has a wireless connection to the Internet.  Even people visiting from out of town can use the wireless system but they have to pay a small access fee.   Can you imagine driving across the county someday and being able to access the Internet right from your car?\n\n\nLet us not forget that the first wireless technology started with the radio.  Man discovered radio in the late 1800’s.  Radio technology grew in bits and pieces but by the turn of the century wireless communications had been established.  All wireless routers and wireless Internet communication uses radio waves to send the data.\n\n\nLet us not forget RADAR.  RADAR is an acronym for Radio Detection and Ranging\nand helped us win the world war II.  One of the first uses of Microwave technology was used in RADAR in the world war II also.  Most households now use Microwaves to cook food with so radio waves also help us heat things\n\n\nWhat about television transmission?  Isn’t that also wireless?  Although many people now use cable (because they have paid for premium channels) television is a wireless technology.\n\nAnd others:\n\nRadio transponders to find lost aircraft (also a transponder)\nLo Jack stolen automobile retrieval device (also a transponder)\nNavigation\n\nRadio Frequency Identification (RFID) (also a transponder)\nRadio Frequency Identification is a way to remotely receive data from RFID tags or transponders.  They are used on toll roads and even at Mc Donald’s to buy lunch with a swipe of a small device.  They are used soo much that this needs to be researched all by itself.\n\nWhat all wireless technologies have in common is that they are all based on Radio waves.  All of things that I have mentioned are based on Radio technology \n\n\nP.S.  I usually don’t cut and paste and if I do I will say that, that is what I am doing and explain where that information came from.  I like to read information from multiple information sources then put that information together in my own words while keeping the article technically and factually correct.  And as always, I will point to web sites or other information to prove that my information is factual.
211240
Music, radio/tv, wavy stuff.
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All kinds of electromagnetic radiation reflect as light.\nSo do microwaves.\n\nTh
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The equations involved are:\na) freq*wavelength = velocity of wave\nb) energy of radiation E = h*freq, where h is Plank's constant.\nYou can work out from these that the choice should be a.
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Check out these sites. Or just google your topic.\n\nhttp://www.physicsclassroom.com/Class/waves/U10L3b.html\nhttp://www.bbc.co.uk/schools/gcsebitesize/physics/waves/reflectionrefractionanddiffractionrev1.shtml\nhttp://physics.bu.edu/~duffy/PY106/Reflection.html
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Light is a particle. Wave is its function.
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it is the form of measurement that is used to measure the "loudness of sound"\nIt's the amplitude of the wave
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Enjoy!\n\n"The Physics of Music and Musical Instruments" covers the physics of waves, sound, music, and musical instruments at a level designed for high school physics. \n\n• Introduction\n• Chapter 1: Waves and Sound\n• Chapter 2: Musical Scales\n• Chapter 3: Standing Waves\n• Chapter 4: Stringed Instruments\n• Chapter 5: Wind Instruments\n• Chapter 6 part #1: Percussion Instruments\n• Chapter 7: Musical Instrument Timbre\n• References\n\nDownload from the source given below:
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mass, length, time, current, luminous intensity and solid angle steradians r fundamental. Rest all can b expressed by these alone.\n\nDarren G - missed d last 1.\n\nSo ur ans is option D
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Its the frequency/wavelength.\n\nThe "energy" of an EM wave is in its photons.  Each photon\nhas energy of hf, where h is Plank's constant and f is the freq.\nSince Xrays are higher freq than microwaves or light waves, they\ncarry more energy.
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Infra red - used for heating\n\nMicrowaves and radar - used for cooking and, erm, for radar. :) 802.11b/g LANs, bluetooth, portable telephones, baby monitors, satellite TV, satellite communications, and a host of other devices also operate in these frequencies\n\nTV and FM radio\n\nShortwave radio\n\nAM radio\n\nAircraft and Shipping radio bands \n\nExtremely low frequency -- very long wavelengths can be used to punch small amounts of information through to a receiver in extreme conditions.  The navy had an ELF system for the purpose of giving orders to launch nukes to submarines.  This system has reportedly been abandoned.\n\nSee "sources".  First source is an introductory web page to the electromagnetic spectrum from NASA.  Second source is information on the Navy's project ELF
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The last answer is correct.  The equation:\n\nA*sin(bx+c)\n\nCan be graphed.  A is the amplitude of the wave (how high along the y axis).  b is the frequency (how fast do you need to complete one wavelength).  c is a wavelength shift, how far away from x=0 do you have to start the wavelength.
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CQ: A general call sent by a station to any other station that may receive it. Hams and other stations "call CQ" to indicate they will answer any station that replies to their call.\n\nA list of Ham Radio Terms and Abbreviations can be found here...\nhttp://www.ac6v.com/jargon.htm\nAnd a list of CB radio terms can be found here...\nhttp://home.att.net/~wizardoz/cbmw/cbphpatch.html
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From the point of view of Physics, an electromagnetic (EM) wave is a self propagating wave in space with electric and magnetic components. It carries energy and momentum which may be imparted when it interacts with matter. EM wave can be predicted by Maxwell's equations. \n\nFurther informations: http://en.wikipedia.org/wiki/Electromagnetic_wave