PPT Slide
- k=(1.0+1.1)/2 = 1.05 y(x,t) = A` sin( kx - ?t) ?=(1.0+1.5)/2=1.25 vp=1.25/1.05=1.19
- carrier wave moves at phase velocity
- A` ={2 A cos [(?k/2)x -(??/2)t]}
- ?k=(1.1-1.0) = .1 ,??=(1.5-1.0)= .5 , vg=.5/.1 = 5
- modulation moves at group velocity =>