<p><strong>Fig. 4.11.</strong> Two sets of generated waves in a ripple tank. Notice the patterns of interference where wave sets meet.</p>

Fig. 4.11. Two sets of generated waves in a ripple tank. Notice the patterns of interference where wave sets meet.

Image courtesy of Physics Kit and Instrumentation Research Group (PhyKiR), Department of Physics, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris (UPSI)