CHEM-S 117 Lecture Notes - Lecture 1: Cathode Ray Tube
Document Summary
F = force vector on the particle q = charge of particle. E = electrical field vector a = acceleration vector of particle. Cathode ray tube- instrument used for discovering electrons. In these tubes is a small dark space by the cathode called the faraday dark space. When pressure is relieved (i. e. less gas in the tube) the dark space becomes larger and larger. This is because there are less gas particles for the electrons to collide with. The glow emitted from the cathode ray tube comes from the anode and is emitted when the electrons strike something in this case gas particles. Mass-spectrometer- instrument for measuring the mass of an ion. The deviation of the charged particle is proportional to the acceleration (charge/mass ratio or q/m). Applications of this include measuring the mass and structure of biochemical. Lorentz force- force exerted by a magnetic field on a moving electrical charge. Deviation of the particle depends on q/m.
