| 摘要 |
PURPOSE: An electric field measurement apparatus is provided to reduce an error or measuring electric fields by measuring the direction and level of external electric field through a formula of optoelectronic movement. CONSTITUTION: The device includes a photoelectric unit(110), a light source(20), a variable voltage(30), an amperemeter(40), and a voltmeter(50). The photoelectric unit includes a vacuum tube, a radiation plate which is installed in the vacuum tube, and a horizontal plate which is opposite to or is parallel with the radiation plate. A light source projects the electromagnetic wave to the radiation plate. The variable voltage applies a voltage between the radiation plate and a parallel plate. The amperemeter measures electronics through a photoelectric effect. The voltmeter measures the potential applied between the radiation plate and the parallel. |
