Electronics & Semiconductors

Radiative cooler that cools down even under sunlight

Now that autumn is upon us, there is a large temperature gap between day and night. This is due to the temperature inversion caused by radiative cooling on the Earth's surface. Heat from the sun during the day causes its ...

Energy & Green Tech

Researchers create a new 'green' engine for lorries

Researchers from the Polytechnic University of Valencia (UPV) have designed a new engine to decrease the environmental impact of the most common type of lorries that travel on European roads—those that weigh between 18 ...

Business

How Google evolved from 'cuddly' startup to antitrust target

In Google's infancy, co-founders Larry Page and Sergey Brin reviled Microsoft as a technological bully that ruthlessly abused its dominance of the personal computer software market to choke off competition that could spawn ...

Business

Google monopoly case by US sets stage for multipronged attack

The U.S. Justice Department sued Alphabet Inc.'s Google in the most significant antitrust case against an American company in two decades, kicking off what promises to be a volley of legal actions against the search giant ...

Engine

An engine is a mechanical device that produces some form of output from a given input. An engine whose purpose is to produce kinetic energy output from a fuel source is called a prime mover; alternatively, a motor is a device which produces kinetic energy from other forms of energy (such as electricity, a flow of hydraulic fluid or compressed air). A motor car (automobile) has a starter motor and motors to drive pumps (fuel, power steering, etc) – but the power plant that propels the car is called an engine. The term 'motor' was originally used to distinguish the new internal combustion engine -powered vehicles from earlier vehicles powered by a steam engine (as in steam roller and motor roller).

Military engines included siege engines, large catapults, trebuchets and battering rams.

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