The history of telescopes dates back to the early 1600s when the first known telescope was invented by Dutch eyeglass maker, Hans Lippershey. This early device, called a refracting telescope, used a convex lens at one end to gather light and a concave lens at the other end to focus the light and produce an image.

The Egg Drop experiment is a classic science experiment that is often used to demonstrate principles of physics and engineering. The basic idea is to design and build a structure that can protect an egg from breaking when dropped from a certain height.