Electromagnetic Radiation
Electromagnetic (EM) radiation is the energy transmitted through space or a material medium in the form of electromagnetic waves. The frequency range of such waves is tremendous, and is shown by the electromagnetic spectrum. These waves include radio waves, microwaves, infrared waves, visible light waves, ultraviolet (UV) waves, X-rays, and gamma rays.
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asked What are two important applications of neutron radiation and said it was different from What are two applications of radiation 25 May 2012 13:30
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removed Identify which of the following is true for gamma ray emission from Electromagnetic Radiation 25 May 2012 06:44
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removed Which of the following protects from ultraviolet radiation from Electromagnetic Radiation 24 May 2012 23:09
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removed What can't a scrap heap magnet do from Electromagnetic Radiation 24 May 2012 22:11
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Sunlight interacting with the Earth's atmosphere makes the sky blue. In outer space the astronauts see blackness because outer...
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The best physics project topics to study depends on what you find interesting. If you find everyday things like motion,...
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UV and IR radiation are both electromagnetic radiations. They differ in wavelength (the distance traveled by the wave in the time...
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The radiation of thermal energy can occur in a vacuum. Radiation is accomplished by the movement of electromagnetic waves through...
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if we're talking about a short dipole, you have {E.H} field depending by r^(-k), where r is distance between antenna's feed and...
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You can Stick to the formula which is : wavelengths/secounds = Hzso that Frequency (Hz) = Wave speed (m/s) / Wavelength (m)OR...
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The acceleration of any charged particle produces EM radiation. This most often occurs when an electron jumps from one energy...
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Isaac Newton discovered the visible spectrum of light while fooling around with a prism (from which is derived the basic...
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IR is heat in the form of electromagnetic radiation. The IR is absorbed by the food causing it to become hotter, eventually...
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yes, about 1000 times more.
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The EM spectrum is the range of frequencies of EM radiation. From low to high frequencies the spectrum goes: Radio, Microwave,...
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The first modern semiconductor diode was made with germanium. These diodes were invented in ww2 for RADAR. But before that...
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yes, a vacuum has no real effect on light unless were talking black-hole in which a laser would not be visible. a vacuum...
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By definition, an isotropic radiator radiates equally well in all directions. A simple vertical whip would have such a pattern in...
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Short answer: Yes, the ozone layer filters out all the UV-C (the most dangerous ultra-violet radiation) and most of the UV-B. The...
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Yes, out of all the colors of visible light, violet has the shortest wavelength.
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Gamma rays have a quality factor of about one.
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X rays are are able to penetrate less dense materials easily, such as muscle and skin tissue in medical situations or plastics...
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Bremstrahlung is German for "braking radiation." It refers to radiation that is associated with the positive or negative...
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GaXrUlViInMiRa. Done by the first two letters of each type of wavelength. The visible spectrum really consist of the colors but...
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Free Electron Theory: This theory tells that, metals conduct electricity because of the presence of free electrons in it. The...
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Sunscreen is used to protect the skin from ultraviolet radiation emitted primarily by our sun. The ozone layer also protects us...
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since the world is full of electronics, when the world ran out of electricity, machines that are dependent to electricity won't...
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Spatial aberration is a term used in optics that means how blurry something is.
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DNA Damage.
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microwaves
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X-ray energies in the range 120 eV to 120 keV. UV energies from 3eV to 124 eV.
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Rainbows are caused by the reflection of sunlight in millions of raindrops. The Sun must be behind you and quite low for a...
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The emission of laser beam through the semitransparent end face actually consists of spikes of high intensity emissions. This...
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yes it does
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Electricity comes from many sources. Such as coal power plants, nuclear power plants and renewable energy sources such as wind,...
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yes, the earth radiates heat as IR into space and gets cooler at night.
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It's primary usage is to determine the nature of an induced EMF from changes in the magnetic flux through a circuit. However, you...
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Light is a form of energy which gives a sensation of sight to eyes. It enables the eyes to see objects by the light the objects...
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Light travels faster than sound. Thunder and lightning provide a good example. Light moves at 299 million metres per second....
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James Maxwell was able to show that a vibrating charge would result in the propagation of an electromagnetic wave that would...
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Well it depends on the device but anyway it is very little. Cellphones have the highest emission and you shouldn't keep them...
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nm = nanometersIt is a measure of the wavelength of the light, with energy inversely proportional to the wavelength: E = h /...
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White light contains the many colors you see. The illuminated object will absorb and reflect the light as its' materials see fit....
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Electromagnetic waves, if it was mechanical, something would literally have to make them!
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They are both high energy electromagnetic waves
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Violet light has a higher frequency than red light by a factor of 2.
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It is spectroscopy.
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It means high energy. Among the low frequency, low energy EM [electromagnetic] waves are the radio waves; as compared to the...
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concentric eclipses of very little eccentricity centered about the sun. Most planets within 5' of the ecliptic.
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All countries get increased UV-B irradiation, because the ozone layer above all countries is thinner than it once was.UV-B...
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Infrared radiation.
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Primarily Yellow but really it uses most of the visible spectrum, just some parts more than others. Green plants actually have...
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A gamma ray is a form of electromagnetic radiation that has a very short wavelength (and a very high frequency and a very high...
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low frequency radio high frequency radio including microwave heat here --> . . . . . infrared . . . . . red light orange...
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Infrared radiation
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yes, they do!
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For 'f' in GHz and 'D' in feet, I always use Gant, dB = 20 log( f x D ) + 7.5 But I think that's for 55% efficiency. If the eff...
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It takes longer to heat or cool water than for air. The water was probably warm from being heated by the sun all day, and so was...
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A microwave oven takes advantage of the ability of microwave energy to act on atoms on a molecular level. Take a metal box with a...
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It condenses hot air
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The troposhpere is thick (relatively speaking) with gases and so more high energy EM waves are absorbed before they can reach the...
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The term thermal energy can be used in several ways. Because of this, we'll kick around and apply it in a few situations to see...
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advantages: 1. They can detect *very* minute amounts of material. 2. You can label specific atoms (say carbon-1 in glucose) to...
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FM stands for frequency modulation. The definition is: when the frequency of the carrier wave is changed in accordance with the...
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Because galaxies include stars, clouds of hot gas, and free charged particles sailing through magnetic fields, and each of those...
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EWL (extreme wavelength) radio waves.
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Convex are thicker in the middle and thin out at the edges. These lenses magnify and are used for reading glasses and to correct...
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Ultraviolet light (UV light) is light of shorter wavelength than the visible spectrum. Many insects, like bees, see mostly UV...
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Electromagnetic frequency, f, is equal to the speed of light, c, divided by wavelength, l, or f = c/l. In this case, f =...
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Very little of the overall spectrum is used for photosynthesis.Specifically, only that part of the visible spectrum whose...
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Lighting is the atmospheric discharge of electricity. This electricity is the result of static charges that build up after being...
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X-rays
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check the link under 'edit links' in the left column for details.It is 10-16 m.
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No. Normal human eyes are unable to see ultraviolet at all. People with aphakia say it looks pale blue. The author of this answer...
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Aopprox. 300,000,000 meters (186,282 miles) per second, in vacuum. Slightly less in material media.
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The sky is blue most of the time but at sunset it is red. These colours are caused by the refraction of light through the air...
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It absorbs most of the sun's UV radiation.
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Alpha particle - fully ionized helium nucleus Beta particle - high energy free electrons Gamma ray - very high energy...
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Your comparison attempt is confusing. Water molecules don't have 'waves' by themselves. The ocean has waves, H2O does not. We use...
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If we want to add information onto it, we know how to do that. That's howwe accomplish radio, TV, GPS, and the cellular telephone...
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Good question-- See the link. Roughly the visible region is 300 nm to 650. so that's 350 nm total. The electromagnetic spectrum...
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Frequency of infra red waves range from 4 x 1014 to 1 x 1013 hertz
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AnswerColorimetry is the measurement of the wavelength and the intensity of electromagnetic radiation in the visible region of...
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Radio waves, Infrared rays, visible light, ultra violet rays, x-rays, gamma rays
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Some food is designed to explode in the microwave: popcorn, for example, is a series of controlled mini-explosions that turn the...
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Terrestrial radiation is heat that is radiated from the earth, solar radiation is heat radiated from the sun.
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Alpha particals, beta particles and gamma rays are all forms of nuclear radiation. They are produced in nuclear decay, which...
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No, the colour (frequency or wavelength) of light does not affect its velocity. The velocity of light is determined by the medium...
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Solar radiation (UV-A, UV-B and UV-c) is a part of electromagnetic radiation. Electromagnetic radiation means that the electrons...
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Yes, in the form of infrared radiation we see that heat can travel via light waves. We call this infrared radiation, and this is...
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An LED (light emitting diode) is used in electronic circuits to provide light where needed. Essentially, it is a low power...
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Visible light has higher frequency than that of infra red radiations. The order of electro magnetic waves in the increasing order...
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Solar radiation comes from the sun, and its wavelengths are much shorter than that coming from the Earth simply because the sun...
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Certain kinds of radiation can kill you by causing cancer. Radiation is actually the emittance (by unstable atoms) of tiny...
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Beta radiation is the name of the particle released in a type of nuclear decay called (naturally) beta decay. The radiation, the...
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Ultraviolet rays are light waves that we cannot see with our eyes (with intact corneas), very similar to infrared or radio,...
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Radio waves, RADAR, microwaves, visible light, UV rays, and X-rays.
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AnswerIt is the alpha particle, which is actually a helium-4 nucleus, that is emitted during alpha decay. The helium-4 nucleus,...
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AnswerThe relation to be used: Speed of light c = frequency * wavelengthWavelength = c / frequency,where speed of light c = 2.998...
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The Ozone layer in the upper Stratosphere.
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