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Do Anybody know about Em Spectrum?
i need the answer to each one of the waves
Radio, Microwave, Infrared, Visible, Ultraviolet, X-rays, and Gamma rays
where do these waves are found in nature?
how do scientists and engineers use these waves?
Where would you find this wave in your daily life?
- BellaLv 71 decade agoFavorite Answer
The electromagnetic spectrum ranges from low frequency long wavelength (radio waves) through increasing frequency and decreasing wavelength to the high frequency short wavelength of Gamma rays. This range is in the order that you listed each type.
"Radio waves have the longest wavelengths in the electromagnetic spectrum. These waves can be longer than a football field or as short as a football. Radio waves do more than just bring music to your radio. They also carry signals for your television and cellular phones."
They range from 3 Hz to 300 MHz.
Microwaves are electromagnetic waves with wavelengths ranging from 1mm - 1m, or frequencies between 0.3 GHz and 300 GHz.
"Microwaves have wavelengths that can be measured in centimeters! The longer microwaves, those closer to a foot in length, are the waves which heat our food in a microwave oven.
Microwaves are good for transmitting information from one place to another because microwave energy can penetrate haze, light rain and snow, clouds, and smoke.
Shorter microwaves are used in remote sensing. These microwaves are used for radar like the doppler radar used in weather forecasts. Microwaves, used for radar, are just a few inches long."
Infrared, Visible, Ultraviolet, and Gamma rays are all produced by the Sun. Gamma rays only occur in particularly hot spots on the Sun.
Infrared and Ultraviolet spectra are used scientifically in spectroscopes to identify materials.
Visible light is of course used to see with.
Infrared------ 3 x 10^12 - 4.3 x 10^14 Hz
Visible------- 4.3 x 10^14 - 7.5 x 10^14
Ultraviolet--- 7.5 x 10^14 - 3 x 10^17
X-Rays------- 3 x 10^17 - 3 x 10^19
Gamma Rays--- > 3 x 10^19
"Gamma-rays have the smallest wavelengths and the most energy of any other wave in the electromagnetic spectrum. These waves are generated by radioactive atoms and in nuclear explosions. Gamma-rays can kill living cells, a fact which medicine uses to its advantage, using gamma-rays to kill cancerous cells.
Gamma-rays travel to us across vast distances of the universe, only to be absorbed by the Earth's atmosphere. Different wavelengths of light penetrate the Earth's atmosphere to different depths."Source(s): http://en.wikipedia.org/wiki/Electromagnetic_spect... http://science.hq.nasa.gov/kids/imagers/ems/radio.... http://en.wikipedia.org/wiki/Radio_waves#General http://en.wikipedia.org/wiki/Microwave http://science.hq.nasa.gov/kids/imagers/ems/micro.... http://en.wikipedia.org/wiki/Infrared_spectroscopy http://csep10.phys.utk.edu/astr162/lect/light/spec... http://science.hq.nasa.gov/kids/imagers/ems/gamma....
- Anonymous1 decade ago
The EM (electromagnetic) spectrum is the full range of radiation.
The longest wavelengths are the radio waves, the shortest are the gamma rays.
All these different ranges of the EM spectrum can be detected in stars, galaxies, star-forming regions, etc.
For daily life, you just need to think about these a bit:
- radio waves let you listen to music
- microwaves cooks food fast
- infrared keeps you warm in winter
- visible lets you see
- ultraviolet kills bacteria (and causes skin cancer)
- x-rays let doctors see inside the human body
- gamma rays are sometimes used to sterilize medical equipment