Circular Plate:                                                  

circle.jpg (100982 bytes)               circleline.jpg (94407 bytes)             

Notice the clear, distinct radial nodes while the diametric nodes are much more difficult to determine.

Square Plate:

square.jpg (87528 bytes)                square1.jpg (84449 bytes)

Although the "m" and "n" values were indiscernable, various modal frequencies exhibited extraordinary patterns.

Rectangular Plate:

rect1.jpg (94948 bytes)                  rect2.jpg (89482 bytes)

Our pride and joy, the rectangular plate offered many modal frequencies where the nodal pattern resembled an elegant grid (perfect for counting the "m" and "n" values).

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