An entirely new species of ancient fish has been identified from a fossil found at Nova Scotia's Blue Beach. Heid Petracek looks at how the relic is believed to date back about 350 million years, and ...

Measurements of the rms values of alternating currents are frequently made by means of thermal transfer instruments. At low and midfrequencies Thomson heating can have an important influence on the ac ...

How to Make DC Motor from Battery Amazing idea ...

Make a simple mini-motor. A coil of wire becomes an electromagnet when current passes through it. The electromagnet interacts with a permanent magnet, causing the coil to spin. Voilà! You’ve created ...