Water Drop Parabola
To demonstrate the parabolic path of a projectile.
Water stream parabola apparatus, water reservoir, and point light source, as photographed.
A water stream is projected in front of a cartesian coordinate grid which can be shadow projected using a bright point source. If desired, coordinates of the water stream can be read. The reservoir is a bottle which provides constant water pressure even as the water level drops in the container. ◙