Okay kiddo, let me break it down for you. Cambridge interferometer is a tool that helps scientists study light. It does this by using something called interference.
Interference is like when two waves meet in the water and create bigger waves. In this case, it's when two waves of light meet and interact with each other.
The Cambridge interferometer creates two beams of light that travel in different directions. These beams then come back together and interfere with each other. Scientists can then study the interference pattern to learn more about the light waves.
The pattern tells scientists things like the wavelength of the light, the distance the beams traveled, and even the temperature of the object the light was reflected off of.
Overall, the Cambridge interferometer is a really cool tool that helps scientists learn more about light and the world around us.