Marshmallows in the Microwave


An old microwave on a cart

Concept Overview:

1. Evidence of a high frequency standing wave.

Lecturer Procedure

Step(s) to Follow Expected Result

1. Place marshmallows in microwave.

2. Press "cook 1" followed by 15 seconds.

3. Hit start.

4. When microwave is done, press marshmallows down and remove from microwave.

There will be a definite pattern of uneven cooking caused by the standing wave.

See below:

A pattern of marshmallows created by the standing wave in a microwave

E&M: AC - 009