Solving equations with light. (Courtesy: iStockphoto/Henrik Jonsson) 3 x + y = 2 x + 3 y = 0 It’s the sort of easy maths problem that you can work out in a few minutes using pencil and paper, but ...

A lot of projects require linear motion, but not all of them require high-accuracy linear slides and expensive ball screws. When just a little shove for a door or the ability to pop something up ou… ...

Do this, and you’ll get the quadratic formula. (See the exercises below for more details.) This isn’t as easy as humming a children’s tune, but it demonstrates the important algebraic and geometric ...

Some of the very largest – and coolest – CNC machines use supported linear rail for their movement axes. For any home tinkerer trying to reproduce these supported rails, the problem of … ...

Imagine that there's an app with which you can simply scan a complicated maths problem with your smartphone camera and it spits out the solution for you. Well, it's call Photomath, and it exists.

Finding the right electric linear actuator for an application usually requires knowing many application details and making several calculations. For the time-strapped engineer, however, there are ...