properties of electromagnetic spectrum?
103941
Some properties of the electromagnetic spectrum is that all waves in this spectrum travel at the speed of light.  The spectrum varies by wavelength and also energy, from gamma rays -> xrays ->ultraviolet ->visible light -> infared ->microwave ->radio.  with gamma having the highest energy with the smallest wavelength and radio having the lowest energy with the largest wavelength.  \n\nHope this helps
926730
maxwell eqn \nther is no need to rember  it 's of no use\n till you pass out of school\nbandwidth it's the range of length within \nwhich any elctromagnetic wave may fall or lie in like the bandwidth for visible light 400 nanometers to 700 nanometers
27171
Its actually derived from Maxwell's Wave Equations, see source. Its too complex and requires mathematic symbols, so I can't type it here.
689872
Everything in the known Universe is energy, the mysterious power that holds atoms together, makes trees grow, keeps your heart beating and the Earth spinning through space. This energy vibrates at different speeds, or wavelengths. Matter may be understood to be very slow-moving energy relative to, say, sunlight. We can use the electromagnetic spectrum, a chart of all the types of energy science has measured, to better understand this concept. X-rays, radio waves, microwaves, and television transmissions are all to be found on the electromagnetic spectrum, as well as visible light, within which we find the seven colors of the rainbow: red, orange, yellow, green, blue, indigo and violet. All of these energy forms have characteristic frequencies at which they vibrate.\n\nIf you tune your radio to a frequency of, say, 102.5, you'll always get the same station. The station sends out its programming at a particular frequency; your receiver transforms the radio waves into audible sound waves. One form of energy is transmuted into another form.\n\nColorology, the science of color, is based on the same principle. Each of the seven colors and their shadings vibrate at a characteristic frequency; anything you can see (visible light) must also be vibrating at one or more of those frequencies. Our physical bodies "tune in to" -- or receive and resonate with in a particular way -- each of the seven colors of the rainbow. Sunlight contains all of those frequencies and more (ultraviolet rays, cosmic rays, etc.)\n\nHow do our bodies "tune in" to these frequencies? We all have seven major endocrine glands in our bodies, which regulate the functioning of bodily systems (circulation, reproduction, respiration and so forth) by secreting complex chemicals called hormones. Hormones act to stimulate or depress bodily activities as necessary to maintain a state of dynamic balance that we experience as "good health." As a result of excessive or insufficient amounts of hormones, physical, mental and/or emotional imbalance (dis-ease) can occur.\n\nEach of these seven endocrine glands, being a visible energy form, is vibrating at the frequency of one of the colors of the rainbow. We can, therefore, by various methods expose our bodies to these colors and literally, physically affect the vibratory rate of the endocrine glands, which in turn affects the rate of hormone secretion, and thus the functioning of the organs. This holds true for the brain as well; therefore, emotional and mental states are also influenced.\n\nChildren, the elderly, anyone in poor health, and current or recovering substance abusers (all of whom may be in a state of energy imbalance) are usually overly sensitive to the effects of color; its use should, therefore, be carefully monitored with these groups.\n\nUsing Color Practically\nIt's usually best to start by balancing the body using all the colors; then, once you know what system (color) is out of balance, you can work more extensively on that particular area, either stimulating the energy with that system's color, or by suppressing the energy with the complementary color. When balancing the body, always start at the base of the spine (red, the "root" chakra or energy center) and work your way up the torso to the top of the head (violet, the "crown" chakra). The body more easily adjusts and accepts the energy if the frequencies progress from longer to shorter wavelengths ("slower to faster").\n\nThere are a number of simple, inexpensive and effective ways to intentionally employ color:\n\nVisualization -- Simply imagine a ray of light of the desired color penetrating and bathing the dis-eased area. Researchers have found that thoughts have a tangible effect on the physical body, measurable by EEG machines and other methods.\n\nSolarized water -- Place a clear, glass bottle filled with distilled or purified water and covered with colored cellophane in direct m
726904
Nearly all objects in the universe emit, reflect and/or transmit some light. (One hypothetical exception may be dark matter.) \n\nA rainbow shows the optical (visible) part of the electromagnetic spectrum.. Sun and stars too ..\n\nEarth emits Infrared waves .. and so our bodies ..\n\nThe Sun emits a large amount of UV radiation , infrared rdiations and others ..\n\nNeutron stars and accretion disks around black holes emit X-rays, which enable us to study them.\n\nTelevision, mobile phones, wireless networking and amateur radio all use radio waves.
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Electromagnetic waves are light, radio, UV, infra-red, gamma, micorwaves and go at the speed of light 186,000 miles per second (although they go a bit slower in matter). The waves themselves consist of vibrating electric and magnetic fields. Probably you know a few uses for these. For example, our eyes pick up EM waves and that allows us to *see*.\n\nSound waves are pressure waves in some material. Their speed depends on the material. Sounds goes through air at about 700 miles per hour. This is considerable slower than light.\nThese are the waves that our ears hear.\n\nWater waves are what you see on the surface of water when you throw a stone into the water. These go a *lot* slower even than sound waves.
164646
You mean a 'frequency of 5.10^12Hz'\n\nCan you work it out yourself?:\n\nRemember that the speed (v) of the wave is 3×10^8 m/s,\nand that the wavelength is given by v/f\n\n[Edit: Darn, Kirchwey - don't do Glow's homework for her! ;-) ]
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Radio Waves\nInfrared light\nVisible Light\nGamma Rays
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Below are some links with some cool diagrams.  I'm not sure if it's specifically what you wanted though.  The second link has some really cool information about spectral transitions in a LASER.
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Electro-magnetic radiation is a carrier of electro-magnetic energy by transmitting the oscillation of the electro-magnetic field through space or matter. The transmission of electro-magnetic radiation is derived from the Maxwell equations. Electro-magnetic radiation has the characteristics of both wave motion and particle motion. \n\n(1) Characteristics as wave motion \nElectro-magnetic radiation can be considered as a transverse wave with an electric field and a magnetic field. A plane wave for an example as shown in Figure 1.2.1 has its electric field and magnetic field in the perpendicular plane to the transmission direction. The two fields are located at right angles to each other. The wavelength L  , frequency F and the velocity V have the following relation. V = L/F\n\nElectro-magnetic radiation is transmitted in a vacuum of free space with the velocity of light c, ( = 2.998 x 108 m/sec) and in the atmosphere with a reduced but similar velocity to that in a vacuum. The frequency n is expressed as a unit of hertz (Hz), that is the number of waves which are transmitted in a second.\n\n(2) Characteristics as particle motion\nElectro-magnetic can be treated as a photon or a light quantum. The energy E is expressed as follow.\nE = h \nwhere h : Plank's constant\n : frequency \n\nThe photoelectric effect can be explained by considering the electro-magnetic radiation as composed of particles. Electro-magnetic radiation has four elements of frequency (or wavelength), transmission direction, amplitude and plane of polarization. The amplitude is the magnitude of oscillating electric field. The square of the amplitude is proportional to the energy transmitted by electro-magnetic radiation. The energy radiated from an object is called radiant energy. A plane including electric field is called a plane of polarization. When the plane of polarization forms a uniform plane, it is called linear polarization. \n\nThe four elements of electro-magnetic radiation are related to different information content as shown in Figure 1.2.2. Frequency (or wavelength) corresponds to the color of an object in the visible region which is given by a unique characteristic curve relating the wavelength and the radiant energy. In the microwave region, information about objects is obtained using the Doppler shift effect in frequency, that is generated by a relative motion between an object and a platform. The spatial location and shape of objects are given by the linearity of the transmission direction, as well as by the amplitude. The plane of polarization is influenced by the geometric shape of objects in the case of reflection or scattering in the microwave region. In the case of radar, horizontal polarization and vertical polarization have different responses on a radar image.\n\nAny wave function can be defined in terms of amplitude, A, and wave-length,  or frequency, v . A full description of such a wave also requires definition of a phase, phi . A simple one-dimensional wave-function, f(x), specifies the height of the wave at any horizontal point x where x is defined in terms of wavelength such that x=1=. This wave function could be represented as either a sine or a cosine function as follows: \n\nf(x)= Acos2pi(vx+o)
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ok, you could choose how light waves chance in different colors, and make it interesting with examples of real life. You could also talk about the light properties like reflection, refraction, dispersion, diffraction and interference. Always remember to show an example from day to day life.
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c = yf\n\nc = speed of light (3 x 10^8 m/s)\ny = wavelength\nf = frequency\n\n==> f = c/y\n\n==> f = 3 x 10^8 m/s / 0.032 m \n\nf = 9.38 x 10^9 Hz\n\n-or-\n\nf = 9.38 GHz\n\n:)
957910
The visible light region is from 0.7 µm to 0.4µm of the spectrum. The color of an object that we see is the color or wavelength of light reflected from the visible spectrum. All other colors or wavelength are absorbed. the following chemicals are different in terms of wavelength because of their different nature's regarding reflection of particular wavelength or the absorption of other.
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A continuous spectrum of what?
102465
The electromagnetic spectrum is the range of all possible electromagnetic radiation. Also, the "electromagnetic spectrum" (usually just spectrum) of an object is the range of electromagnetic radiation that it emits, reflects, or transmits.\n\nThe electromagnetic spectrum, shown in the table, extends from frequencies used in the electric power grid (at the long-wavelength end) to gamma radiation (at the short-wavelength end), covering wavelengths from thousands of kilometres down to fractions of the size of an atom. It is commonly said that EM waves beyond these limits are uncommon, although this is not actually true. The 22-year sunspot cycle, for instance, produces radiation with a period of 22 years, or a frequency of 1.4*10-9 Hz. At the other extreme, photons of arbitrarily high frequency may be produced by colliding electrons with positrons at appropriate energy. 1024 Hz photons can be produced today with man-made accelerators. In our universe the short wavelength limit is likely to be the Planck length, and the long wavelength limit the size of the universe itself (see cosmology), though in principle the spectrum is infinite.
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From Wikipedia: "The visible spectrum (or sometimes optical spectrum) is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. There are no exact bounds to the visible spectrum; a typical human eye will respond to wavelengths from 400 to 700 nm, although some people may be able to perceive wavelengths from 380 to 780 nm."
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its electrical properties