The first video explores the purpose of both RAM and ROM in a typical computer system.  The differences between the two memory types are outlined.

The second video considers what happens when a modern multi-tasking operating system runs out of physical RAM.  Does it output a “memory full” message and refuse...

Simon Quinnell demonstrates how to use a microscope and how to focus an image.

Mike is part of a space engineering company building a new series of very low mass foldable structures and antennas for satellites.  Oxford Space Systems are also working on constellations of satellites that will provide real time imaging from space. 

There are two cuts of the video – one aimed at primary...

This animated video describes how Einstein’s field equations led to the cosmological constant, which was later shown to be incorrect.  However, Friedmann and Lemaitre found solutions to Einstein’s equations, if the universe was still expanding.  Hubble found evidence from the red-shift of galaxies that the universe...