CRO2

9.1 Understanding the uses of the Cathode Ray Oscilloscope

Thermionic emission

Factors affecting the rate of thermionic emission

1. Surface area of metal - Directly proportional
2. Temperature of metal - Directly proportional
   
3. Types of metal - Depends of the metal type
   
4. Nature of metal surface - Will increase the acceleration of the electrons

Cathode rays

1. Thermionic emissions can be used to produce a continuous flow of electrons in a cathode ray tube.
2. The beam of electrons moving from cathode to anode is called cathode ray.