what we mean by saying that light is electromagmetic waves?

Answer 1

i dont exactly get what you mean.but i can explain to you that as you know our ears hear sounds with a range of frequency .eyes are exactly the same but the wave they recive is different its electromanetic waves and in a range of frequency.heat ,x ray ,ultrablue violet ,and light ... are all electromagnetic waves .the frequency range which our eyes see is called light

Answer 2

light is part of the same type
radio waves are in the same group
gamma rays are allso

It is beleived the electric current is in the same group also

Note this this is more info then you want..
What is a photon? - single post for printer
Posted by TN1, on January 10, 2003 at 08:26 GMT

Everything propagates like a wave and exchanges energy like a particle .
A photon obeys the particle-wave duality ,so it can be assumed to as a
wave and a particle at the same time !
Light is made up from massless particles called photons .
But photons and light can be expressed as waves .Light is part of our
electromagmetic spectrum ,therefore photons are electromagnetic radiation
.
The other parts apart from the visible part of spectrum
are:Ultra-violet,infa red, microwaves ,X-rays radio waves,gamma rays.
The energy is coming to us in the form of packets or quanta therefore is
said to be quantised !
I will give you the reason for that.The energy
E=n^2 p^2 h^2/2mL^2.This is the formula for the energy.
As you can see h is just the Planck's constant,p is the greek pi or 3.14
(another constant), m is the mass of any given particle ,L is the region
that it is confined.But n depends on the energy level that the particle is
.For example for n=1 then n^2=1 ,but for n=2 then n^2=4 .Therefore because
of the term n^2 we cannot have values like n^2=3 , why is that??Because
simply
n=1,2,3,4.... Only integers....
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Answer 3

A wave is a travelling disturbance through a medium.
In the case of water waves the disturbance is through water, for sound it is through air (or water etc), for seismic waves it is through rocks.
For electromagnetic waves the disturbance is of perpendicular electric and magnetic fields.
Some have suggested a medium for the transfer, calling it 'ether'. But Einstein predicted that, even if ether exists, it is undetectable.

Answer 4

Because the waves are made of magnetic fields (H) and electric fields (E) that vibrate in different planes that are 90° apart from one another.

Maxwell's 4 equations describe the properties of electromagnetic waves.

http://en.wikipedia.org/wiki/Maxwell%27s_equations

Answer 5

Light is made up of photons of electromagnetic radiation. Similar to microwaves and x-rays.

Answer 6

transverse waves...travel at the speed of light..