Ripple

The applet above demonstrates a ripple tank with two point sources that are generating waves. The two sources produce an interference pattern. We can use this pattern to calculate the wavelength of the sources. All distances shown are in centimeters.

Problem 1 Click here first!

a. Use the pointer to measure the distance between the sources.
d = [10 ] cm
b. What is the distance to the "screen" opposite the sources? (i.e. the right edge of the applet).
L = [16 ] cm
c. How far is the first antinode from the center of the central maximum?
y1 = [5.25 ] cm
d. What is the wavelength of the wave?
l = [3.28 ] cm

Problem 2 Click here first!

a. Use the pointer to measure the distance between the sources.
d = [7 ] cm
b. What is the distance to the "screen" opposite the sources?
L = [16 ] cm
c. How far is the second antinode from the center of the central maximum?
y2 = [2.36 ] cm
d. What is the wavelength of the wave?
l = [0.517 ] cm

Credits

Physlet problem authored by Larry Martin and Tait Swenson, North Park University