Question

Why light may considered to consist of a propagation wave consisting electic and magnetic field? sin (2pi/landa) (vt-x)?????

Answer 1

its 'coz of the way it behaves. Quite the way like, like we expect a mad man to behave erratically! anyway. light can be particles as well!

Answer 2

yea E=hf!

Answer 3

right!

Answer 4

a good physics theory is a very nice guess at how something is "expected" to behave.. under certain conditions.

Answer 5

yet,sin (2pi/landa) (vt-x)? I don't get it. -.-"

Answer 6

the "x" in that equation conspires with t to change the value of vt-x & hence sin () depends on position AND time.. much the way a wave is supposed to behave.

Answer 7

thx!