Sometimes we don't have a lot of memory to access. In those cases, we need a place to put our data. The natural solution is to put data in the disk, which has very high storage. This is known as swapping.

Everyone nowadays gets the Internet through the router in their home. But what is a router?

Mirrors can interact with light in interesting ways. In fact, reflection and refraction are probably most people's engagement with laws of physics surrounding light in their daily life.

When we discuss the principles of programming languages, lambda calculus is the bedrock of our discussion. It is the most abstract, formal way to describe functions and application.

Besides the primary Internet protocols, there are some others to learn about, like DHCP, NAT, IPv6, etc.