Post by plutronus on Aug 22, 2012 19:10:23 GMT -6
Friends,
As you likely know, there are different kinds of "radiation". In fact, the phrase "radiation" is a bit like the word "frequency" and they are related, something like, radiation being the body while the frequency is a quality of the body. There are also other qualities too, such as magnitude and phase, the presumption here is that the radiation 'shape' is geometrically sinusoidal or 'sine wave'.
There are different 'kinds' of frequencies, if one cares to quantify things in bands or groupings, (as the FCC does), which may be verbally enumerated. For instance, there are 'light' frequencies, such as on the low-end, --infra-red; middle band --visible 'light' or photonic; and the upper end of the 'light' frequencies, --ultra-violet. If one continues up the spectrum, "up" meaning increasing the frequency cycles per second or "Hertz"...'Hz', (in honor of Hertz the German physicist who studied EM waves), or in engineering speak, shortening the radiation's wavelength.....
λ = c/Fr where:
c = speed of light,
Fr = frequency of the radiation of interest and
λ (lambda) = wavelength of one cycle of the radiation measured in distance it occupies in space, typically scaled in meters
As Fr goes up, λ shortens, the quality of the behavior, changes, --the radiation begins to move more beam-like.
....the higher one goes in Fr, one begins to enter the higher energy frequencies or wavelengths. It is in these wavelengths that folks tend to synonymously associate the word "radiation" with the nuclear wavelengths of radiation. Radiation is not necessarily nuclear. Cell-phones emit much radiation, generally to the tune of 5 ~ 20 Watts worth of microwave radiation, just enough to cause cancer.
To get a grasp on things, I've uploaded to my SETV website a large spectrum chart (so its easy to see the details) for your review.
plutronus
As you likely know, there are different kinds of "radiation". In fact, the phrase "radiation" is a bit like the word "frequency" and they are related, something like, radiation being the body while the frequency is a quality of the body. There are also other qualities too, such as magnitude and phase, the presumption here is that the radiation 'shape' is geometrically sinusoidal or 'sine wave'.
There are different 'kinds' of frequencies, if one cares to quantify things in bands or groupings, (as the FCC does), which may be verbally enumerated. For instance, there are 'light' frequencies, such as on the low-end, --infra-red; middle band --visible 'light' or photonic; and the upper end of the 'light' frequencies, --ultra-violet. If one continues up the spectrum, "up" meaning increasing the frequency cycles per second or "Hertz"...'Hz', (in honor of Hertz the German physicist who studied EM waves), or in engineering speak, shortening the radiation's wavelength.....
λ = c/Fr where:
c = speed of light,
Fr = frequency of the radiation of interest and
λ (lambda) = wavelength of one cycle of the radiation measured in distance it occupies in space, typically scaled in meters
As Fr goes up, λ shortens, the quality of the behavior, changes, --the radiation begins to move more beam-like.
....the higher one goes in Fr, one begins to enter the higher energy frequencies or wavelengths. It is in these wavelengths that folks tend to synonymously associate the word "radiation" with the nuclear wavelengths of radiation. Radiation is not necessarily nuclear. Cell-phones emit much radiation, generally to the tune of 5 ~ 20 Watts worth of microwave radiation, just enough to cause cancer.
To get a grasp on things, I've uploaded to my SETV website a large spectrum chart (so its easy to see the details) for your review.
plutronus