After the insulator and the insulated conductor are charged, the charge is kept on the insulator due to high resistance. Both are called the accumulation of static electricity.
Spark discharge is a discharge that occurs between liquid or solid conductors. It is characterized by rapid discharge and a loud popping sound.
2. Corona discharge
When there is a tip with a small radius of curvature on the conductor, a corona discharge occurs. It is characterized by the sound of "sizzle" and sometimes a faint glow.
3. Brush discharge
Brush discharge occurs between a conductor and a non-conductor. It is a discharge that emits short sparks from many points on the non-conductor.
4. Static ignition
Whether electrostatic discharge can ignite flammable and explosive mixtures depends on the composition and temperature of the mixture, the discharge energy, and the distribution of energy over time and space. The minimum ignition energy of organic vapor and hydrocarbon gas is between [0.01 to 0.1 m].Acetone is 1.15 mJ, isopropanol is 0.65 m]