Convex and concave lenses are particularly interested because you will be able to see how the lens focuses or unfocuses light. This is awfully close to 299792458 meters per second which is the speed of light. Describe the use of.
View Speed of Light in Jellodoc from HS 14 at Oxford University.
When going from a high-speed material such as air to a lower-speed material such as gelatin the beam will bend into or towards the gelatin. The blue gelatin which is actually cyan absorbs red light but not blue or green so the red beam isnt visible. Make sure the gelatin is not in a container and that it has completely flat sides. We need to flex our geometry muscles and measure the speed of light in Jell-O.