Once raw data has been collected, you need to represent it in a diagram. Two ways of doing this are to use a pie chart or frequency diagram. In a survey, 100 school students were asked to name their ...

Schematic Maps: Get inspired by the story behind the most iconic schematic map: London Underground Map by Harry Beck. A Guardian article featuring animations transforming schematic maps into ...

Power a lamp or heat a mug — no wires needed. This project transfers 20 W through a 5 cm table using 50 kHz electromagnetic resonance. A microcontroller oscillator, MOSFET stage, and rectified ...