The Doppler Effect, when applied to light from a star, can be used to determine if the star is approaching or receding. This is the basis for the generally accepted theory that the universe is expanding. This demonstration shows the Doppler Effect applied to sound. Once the device is assembled, it can be used repeatedly.
Related Resources:
Teacher Demo: Mouldy Bread Demonstration
Categories: Teacher Demonstration
This demonstration shows how water can affect the growth of bread mould. read more
Teacher Demo: Air Pressure
Categories: Teacher Demonstration
This demo illustrates the presence of atmospheric air pressure and shows how the force that it exerts is greater than the force of gravity in some situations. read more
Teacher Demo: Covered Lens
Categories: Teacher Demonstration
This demonstration will help students understand what is required for an image to be formed by a lens. As well, it will help to diagnose possible misconceptions about image formation. read more
