Jihyuk Jung

Gears are one of the most important inventions in mechanical engineering. They are essential parts for motion transfer and force between parts of a machine. The unique design of gears, where it has teeth around its circular shape, allows one part to spin another, changing their speed and directions. Initially, gears were built to make work easier. In ancient China, wooden gears were used to lift water for farming; and in ancient Greece, gears helped track the movement of stars in the...

Introduction Solar energy is a type of renewable energy which uses sunlight to generate electricity, and has already gained significant...

Have you ever asked yourself why wind turbines have different designs? Human beings have evolved with nature and one of the largest...