Over the last 50 years, satellites have become as commonplace as other tools of technology before them, such as clocks...

Physics Narrative 11-14

The centripetal force is interesting in that it acts at right angles to the direction of travel of the object moving along a...

Physics Narrative 11-14

Perhaps the first question to think about is how they get into orbit in the first place. Let's try a thought experiment that...

Physics Narrative 11-14

A satellite that stays above one place on the Earth's surface has to sit above the Equator. Then the centre of the circle...

Physics Narrative 11-14

Covering the whole of the Earth with communications satellites requires a minimum of three satellites evenly distributed.

Physics Narrative 11-14

You need to understand something of circular motion to understand the movement of satellites, whether natural or artificial.

Physics Narrative 11-14