Static charge on a moving object. Drawing, description

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Static charge on a moving object. Children's Science Lab

Children's Science Lab

Attach a hard rubber disk or an old record to the motor shaft. Electrify the disc by rubbing it with a woolen cloth. Now start the engine. Place a small magnetic compass near the edge of the spinning disk, and the compass needle will deflect, indicating that it has been placed in a magnetic field.

Such a field is created not only by an electric current passing through a conductor, but also by charges of static electricity on a moving object. the faster the disc spins, the greater the magnetic effect will be.

Static charge on a moving object forms a magnetic field

This curious phenomenon was first noted by Professor Henry A. Rowland, a famous American physicist.

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The need for mass production of products that use microelectromechanical systems (MEMS) technology is increasing as the market for MEMS sensors grows.

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Previously, MEMS manufacturing was concentrated on a 150mm wafer processing line located in Japan. Recall that MEMS technology has literally revolutionized the production of sensors. It is based on the use of a unique combination of electrical and mechanical properties of semiconductor materials.

Having started their triumphant march with security systems, motor control and blood pressure measurement, MEMS sensors are now found in cell phones, game consoles, medical devices, household appliances and many other products. Analysts estimate that the MEMS sensor market, which reached $2006 billion in 6, continues to grow rapidly and will reach $2010 billion by 9,7.

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