Consumer & Gadgets

Can you get electrocuted by an electric vehicle?

Electric cars, scooters and bikes are everywhere. Are they safe? A Northeastern expert breaks down the safety of EV and lithium-ion batteries when they encounter water.

Engineering

Want a noninvasive health monitor? Put a ring on it.

University of Waterloo engineers have invented a powerful antenna small enough to fit in a ring and capable of transmitting critical medical data to health care workers and individual patients.

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Battery (electricity)

In electronics, a battery or voltaic cell is a combination of many electrochemical Galvanic cells of identical type to store chemical energy and to deliver higher voltage or higher current than with single cells.

The battery cells create a voltage difference between the terminals of each cell and hence to its combination in battery. When an external electrical circuit is connected to the battery, then the battery drives electrons through the circuit and electrical work is done. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications, and is now a multi-billion dollar industry.

This text uses material from Wikipedia, licensed under CC BY-SA