A periodic wave repeats the same oscillation for several cycles, such as in the case of the wave pool, and is associated with simple harmonic motion. Thunder and explosions also create pulse waves. Place a marble inside the bowl and tilt the bowl. A pulse wave is a sudden disturbance in which only one wave or a few waves are generated, such as in the example of the pebble. Find a bowl or basin that is shaped like a hemisphere on the inside. The simple harmonic motion definition is that SHM is an oscillatory motion around an equilibrium point.
The motion of the block on a spring in SHM is defined by the position x(t) = Acos\(\omega\)t + \(\phi\)) with a velocity of v(t) = −A\(\omega\)sin(\(\omega\)t + \(\phi\)). Take-Home Experiment: SHM and the Marble.