Perpetual motion - Wikipedia, also known as perpetual motion machines, is the concept of a machine that can operate indefinitely without an external power source. It is a theoretical concept that violates the laws of thermodynamics, which state that...

Toroidal vortex generators are a type of flow control device that generate a swirling flow pattern known as a vortex around the surface of an object. The principles behind toroidal vortex generators involve the use of small, circular fins...

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What happens if US dollar collapses? If the US dollar collapses, it could have severe consequences on the global economy. Some potential outcomes include: Hyperinflation: If the dollar loses its value rapidly, prices for goods and services in the US could...

What's with the googly eyes in everything everywhere? Googly eyes have been popular in the United States for many years, and their popularity seems to be increasing every year. There are several reasons why googly eyes have become so popular...