please help me wiht this one..?

Question

What are the different regions of the electromagnetic spectrum and the quantum change on these regions?

our topic is about refractive index..

thanks really for the help..

Answer 1

The electromagnetic (EM) spectrum is the range of all possible electromagnetic radiation. Also, the "electromagnetic spectrum" (usually just spectrum) of an object is the frequency range of electromagnetic radiation that it emits, reflects, or transmits. The electromagnetic spectrum, shown in the chart, extends from just below the frequencies used for modern radio (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. In our universe the short wavelength limit is likely to be the Planck length, and the long wavelength limit is the size of the universe itself (see physical cosmology), though in principle the spectrum is infinite.

Electromagnetic energy at a particular wavelength λ (in vacuum) has an associated frequency f and photon energy E. Thus, the electromagnetic spectrum may be expressed equally well in terms of any of these three quantities. They are related according to the equations:
c is the speed of light, 299792458 m/s .
h is Planck's constant, .
So, high-frequency electromagnetic waves have a short wavelength and high energy; low-frequency waves have a long wavelength and low energy.

When light waves (and other electromagnetic waves) enter a medium, their wavelength is reduced. Wavelengths of electromagnetic radiation, no matter what medium they are travelling through, are usually quoted in terms of the vacuum wavelength, although this is not always explicitly stated.

http://en.wikipedia.org/wiki/Electromagnetic_spectrum
there are 6 kinds of waves gamma- most damaging used in nuclear medicine and the atom bomb x-rays- used in medicine can be damaging if used wrong ultraviolet- sun burn can be caused by this visable- what we see colors infra-red-different kinds far, mid, near microwaves- this wave heats something from the inside out
hope this helps!!!!!