Electromagnetic+spectrum

= Electromagnetic Spectrum = = = =The electromagnetic spectrum is a pretty cool thing. its made up of a whole lot of crazy waves (most of them are pretty ninja and you can't see them).=

=﻿The electromagnetic spectrum is a large range that incompasses wave forms, from the very small, high frequency gamma rays to the much slower, massive long-waves (not that i know what that is).=

=﻿As you can see by the prety picture above there is only a small chunk that has colour, this is cause our brains can only process and handle a small area of the spectrum, at about 10^13Hz. This visible region has wave lengths from roughly 400-700nm ( nano meters)=

=﻿There are 7 types of electromagnetic radiation. These are basicly defined by their uses based on the frequency and wave length which are, in order: radio waves, microwaves, infrared radiation, visible light, ultraviolet, x-rays, gamma rays.=

=﻿Radio waves are used for, you guessed it cooking stuff in microwaves. ok maybe not, their name explians them self. They have a frequency of 10^4Hz and a wave length of 10^3m meaning they are rather big and have a raletivly low frequency meaning they can travel all over the show, thats why u can sometimes pick up asian radio stations in your car.=

=﻿Next come actaul microwaves which realy are used for cooking food by causing the water particles to vibrate creating kinetic energy which is transfered as heat energy thus heating up your food. they have a frequency of about 10^8Hz and a wave length of 10^-2m.=

=Infra-red is next along the spectrum. these waves are everywhere because everything produces them, infra-red is heat.= =They have a frequency of 10^12Hz and a wave length of 10^-5m.= = =

=Now for the cereal stuff. visible light, this is the only part of the spectrum that we can see, thus the name 'visible'.= =Visible light is broken into the colours red, orange, yellow, green, blue, indigo, violet. With wave lengths from 380-760nm and a frequency of about 10^15Hz.=

=Now onto ultra-violet. This is the stuff that burns your skin if your outside to long in the sun. It has a wave length of 10^-8m and a frequency of about 10^16Hz.=

=Up next is x-rays, these are some of the most helpful of all the wave forms, as they are used to check peoples bones for breaks, cracks or just have a look see at them. They have a wavelength of 10^-10 and a frequency of 10^18Hz.=

=Finally we come to gamma rays, the top dog of the spectrum, these crazy small waves are produced in the sun but cannot penetrate our atmosphere, but if they did, shit would hit the fan. These waves cause the cells in your body to die meaning a bombardment of these waves would kill you. They have a wave length of 10^-12 and a frequency of 10^20Hz.=

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