Element 2.3 Students learn about interference
Learning Outcomes:
1. Apply the properties of waves and the principle of superposition to explain wave interference
2. Examine the conditions necessary to produce a standing wave
There are many excellent examples of simulations that can be used by students to
investigate physical concepts. One example of a simulation that students might consider
when learning this topic is the one illustrated below.
Examine requires a student to consider . . . a concept in a way that uncovers the . . .
interrelationships of the issue.
A standing wave can be difficult to understand. By applying (use information and/or
knowledge and understanding to explain a given situation) the principle of
superposition, and by making measurements from the screen (or from a printout) it is
possible to predict the amplitude at any point in the standing wave.
Constructive and destructive interference can, thus, be mathematically demonstrated,
leading to a deeper grasp of how the component waves relate to the resulting standing
wave. The relationship between standing waves and resonance can also be explored.
2.3.4 Walter Fendt Applet1 – Standing Wave Generator
1
Download the Java application from this webpage to get the English language version.