###### 1-D Wave Index of PDE's ######

All animations presented in this section represent finite-difference solutions to some variation
of the standard the 1+1 wave equation

               Utt=a**2*Uxx

On some domain or other.

The specific PDE's solved for each video are listed below.

1 ##### 1d Wave, gaussian #####

	Utt=Uxx
	U(x,0)=exp(-(x-5)**2)
	Ut(x,0)=0
	U(Boundary)=0

	Domain={x | 0<x<10}

2 ##### 1d Wave, forcing #####

	Utt=Uxx+exp(-(x-15)**2-0.05t)*sin(3t)
	U(x,0)=0
	Ut(x,0)=0
	U(Boundary)=0

	Domain={x | 0<x<30}

3 ##### 1d Wave, periodic domain #####

	Utt=Uxx
	U(x,0)=exp(-(x-25)**2)
	Ut(x,0)=0
	U(0,t)=U(30,t)

	Domain={x | 0<x<30}

########## END ###########