- #1
Sunfire
- 221
- 4
Hello,
is it possible for one to assume a straight-line propagation of an e.m. wave and constant velocity c? If so, is it possible to simplify the wave equation
utt=c2uxx
by expressing the spatial variable x through the time variable t?
x must be a function of t, since the motion is rectilinear with constant c.
Then, x = x(t) and x is no longer independent variable. Then the above PDE should be rewritten in terms of t only, since u(x,t)=u(x(t),t)=u(t)
Does this make sense?
is it possible for one to assume a straight-line propagation of an e.m. wave and constant velocity c? If so, is it possible to simplify the wave equation
utt=c2uxx
by expressing the spatial variable x through the time variable t?
x must be a function of t, since the motion is rectilinear with constant c.
Then, x = x(t) and x is no longer independent variable. Then the above PDE should be rewritten in terms of t only, since u(x,t)=u(x(t),t)=u(t)
Does this make sense?