The following table includes data and calculated wave speeds for each of these standing wave movies. You can compare your calculated wave speeds with those values.
| Wave Velocity Calculations for Waves on a Wave Demonstrator |
| ƒ (Hz) |
N |
λ(m) |
vcalc (m·s-1) |
vobs (m·s-1) |
| 0.883 |
2 |
1.80 |
1.59 |
1.42 |
| 1.608 |
3 |
0.90 |
1.45 |
1.42 |
| 2.361 |
4 |
0.60 |
1.42 |
1.42 |
| 3.217 |
5 |
0.45 |
1.45 |
1.42 |
| 3.951 |
6 |
0.36 |
1.42 |
1.42 |
| 4.771 |
7 |
0.30 |
1.43 |
1.42 |
| 5.617 |
8 |
0.26 |
1.44 |
1.42 |
| 6.396 |
9 |
0.23 |
1.44 |
1.42 |
| 7.185 |
10 |
0.20 |
1.44 |
1.42 |
N = number of nodes.
D = 0.148 m = inside diameter of metal ring.
λ = 2L/(N - 1)
vcalc = ƒλ
L = 0.90 m = length of wave demonstrator.
Δt = 1.27 s = the time for the wave pulse to travel from one end of the demonstrator to the other and back, a distance of 1.80 m,
so vobs = 1.42 m/s |
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