What good electronics factories are there in Lin Ting Town, Jinshan District?

Shanghai Sigang Electronics Co., Ltd.-North Zone, Shanghai Shengmai Electronics Company.

The earliest discovered elementary particles. With negative charge, the electric quantity is1.602176634×10-19 coulombs, which is the smallest unit of electric quantity. The mass is 9.10956×10-31kg. The commonly used symbol e. 1897 was discovered by British physicist Thomson Joseph John when he was studying cathode rays. All atoms consist of a positively charged nucleus and many electrons moving around it. The directional movement of electric charge forms an electric current, such as that in a metal wire. Using electric and magnetic fields, the movement of electrons (in solid and vacuum) can be controlled according to needs, so as to manufacture various electronic instruments and components, such as various electron tubes and electron microscopes.

The crystal diffraction experiment in 1927 confirmed the fluctuation of electrons. 1897 Joseph john thomson of Cavendish Laboratory, Cambridge University, UK, redone Hertz's experiment. Using a vacuum tube with higher vacuum degree and stronger electric field, he observed the deflection of negative rays and calculated the mass-to-charge ratio of negative ray particles (electrons), so he won the Nobel Prize in Physics with 1906. Thomson used the name named by George Storni in 189 1 to refer to this particle. At this point, the electron was discovered by Thomson and became the first subatomic particle discovered by human beings, which opened the door to the atomic world.