Ropes and Spring Attached to Wall
A light rope, heavy rope, and long spring are attached to the wall. Properties of transverse waves including wavelength, frequency, phase velocity, superposition, and reflection may be shown.
Setup
Tie/attach them to the hooks on the lecture hall walls. For the rope, hold it taut and pluck it; that gives you a nice traveling wave.
L3
PIRA DCS 3B10.10