Light is very strange in that it travels as both a wave and a particle. This activity will simplify this concept by building a wave machine to show how light moves as a wave.
Light is very strange in that it travels as both a wave and a particle. However, in this experiment, we only look at light’s wave-like properties. Notice how when you tip one side of a toothpick up, the rest of the toothpicks follow in a motion that is similar to a sine function. This mirrors how a disturbance in light will carry throughout the wave and give off a specific frequency. When we take off half of the marshmallows, we see part of the wave machine moving in a faster motion. This demonstrates how a wave looks at a different frequency.