Longitudinal wave

HOW

1. Grab the black knob and, in a reciprocating motion, induce waves in the spring.
2. Observe how the spring behaves along its length.
3. Perform the experiment for different frequencies of induction: slow and fast.

Note! The spring can be induced to vibrate on one side or both sides simultaneously.

WHY

In this experiment, we are referring to a longitudinal wave as the vibrations of the spring fragments occur in the direction of the resulting wave. This is the opposite of what happens when a transverse wave is created. In the latter case, the vibrations of the system components are perpendicular to the direction of the wave.