This series of short explainer films with Professor Brian Cox comprises six clips focused on forces, speed and motion. Each ...

Displacement close displacementA distance measured in a specified direction. is the distance moved in a straight line, in a given direction, from the starting point. Displacement = 24 m east. Velocity ...

Why should cyclists have all of the fancy toys? Bicycle computers are very common these days but you won’t find similar hardware for skateboards and longboards. [KobraX22] isn’t taking it lying down.

Here are three of the latest additions. RW tests the Polar S625X, Timex Speed and Distance Monitor and Garmin Forerunner 201 It’s not so long ago that speed and distance judgement was regarded as a ...

Ships and other marine vessels measure their speed in knots instead of miles per hour, and the practice goes back to the ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why does time change when traveling close to the ...

I am always on the lookout for ideas for simple test and measurement instruments that can be used on my workbench. Over the years, I have built dozens of little test instruments and home lab ...