Not long after Dalton's discovery of atoms, another English scientist named J.J. Thompson and other scientists of that time worked with cathode ray tubes. J.J. Thompson made some important discoveries. If you have ever seen a neon sign, an older computer monitor, or the color display on an ATM screen, then you have seen a cathode ray tube. "Thompson's cathode ray tube was glass with a metal piece called electrodes attached inside the tube. The electrodes were connected to the wire connected to the battery."
Parts of Atoms
Electron is a particle with negative charge. Because atoms are neutral, or not electrically charged, Thompson proposed that atoms also must contain a positive charge that balances the negatively charged electrons. "He
Parts of Atoms
Electron is a particle with negative charge. Because atoms are neutral, or not electrically charged, Thompson proposed that atoms also must contain a positive charge that balances the negatively charged electrons. "He