A technician often has to sketch or design ductwork and the other parts of an HVAC system. Sometimes you have to sketch the room or building you are working with. This means working with lines, angles ...

There are different ways to investigate refraction in rectangular blocks. In this required practical activity, it is important to: make, measure and record the angles of incidence accurately using a ...

Precision is the silent hero behind every pattern.' Robbie shared this clip of him using instruments to create Celtic knots and ornamental patterns. ''Part of my process for designing a new piece ...