What is EEG?

What is EEG?Electroencephalography, or EEG, is a neurological test that uses an electronic monitoring device to measure and record electrical activity in the brain.Special sensors (electrodes) are attached to your head and hooked by wires to a computer. EEG measures voltage fluctuations resulting from ...Read More

ELECTRIC POLARIZATION

What is electric polarization?When insulating material with relative permittivity (or dielectric constant) Eo is inserted into an initially charged parallel plates of a capacitor. Then negative charges appear on the left face and positive charges on the right face of the dielectric  The phenomenon ...Read More

Thermocouple;Working

In early 1821, Thomas Seebeck searched experimentally for a relation between electricity and heat. He joined two wires of two dissimilar metals to form a circuit. He discovered that if one junction is heated to a high temperature, and the other junction remained at ...Read More