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*"$ +" ,.-/ 0 $1 Waves on a beaded string y( r , t , k)
A .cos ( k .r .a
ω .t )
2 .π
k
10 . a 1
0
1 0
k
2
4
6
8
10
12
14
16
18
20
2
4
6
8
10
12
14
16
18
20
2 .π 6 .a 1
0
1 0
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beadxmp.mcd
1
04/02/99 16:26