High energy plasma - lightening

#### Lightning: A Natural Spark Discharge Lightning is a natural spark discharge that occurs within the atmosphere or between the atmosphere and the Earth's surface. It is a large-scale phenomenon that involves the creation of a highly electrically conductive plasma channel within the air. This plasma channel is formed when a discharge of current flows within the air, rapidly heating the air up to about 25,000°C. #### Formation of the Plasma Channel The formation of the plasma channel during lightning is a result of the electrical properties of the atmosphere and the discharge of current. The exact mechanisms of lightning formation are complex and involve processes such as preliminary breakdown, stepped leader formation, and return stroke. During the return stroke, a massive flow of electric current occurs, rapidly superheating the completed leader channel and forming a highly electrically conductive plasma channel. The core temperature of the plasma during the return stroke can exceed 50,000 K, causing it to radiate with a brilliant, blue-white color. #### Thunder and Lightning The high temperatures generated by the current flowing through the plasma channel cause the air to rapidly expand, creating the sound we hear as thunder. Thunder is produced by the rapid heating of the air in the lightning channel, which leads to an increase in air pressure. The pressure produced from the stroke plasma, which is much greater than the pressure of the surrounding atmosphere, causes the channel to expand at supersonic speeds, ultimately producing a sound wave heard as thunder. #### Plasma and Lightning The plasma channel created during lightning is an example of terrestrial plasma in action. Plasma is the fourth state of matter and is a highly ionized gas. It plays a significant role in various astrophysical phenomena, including stars, gaseous nebulae, and other cosmic phenomena. #### Conclusion In summary, lightning is a natural spark discharge that occurs within the atmosphere or between the atmosphere and the Earth's surface. It creates a highly electrically conductive plasma channel within the air, which rapidly heats up the surrounding air to about 25,000°C. Electrical engineers study the physics behind lightning formation, as well as the processes that lead to static charge buildup in storm clouds and the transformation of air into conductive plasma. Lightning strikes are a common example of high-energy plasma phenomena, with the intense electrical discharge creating a plasma channel responsible for the bright flash of light and the sound of thunder(https://www.sciencelearn.org.nz/resources/239-lightning-explained)[[3]]. Plasma, the fourth state of matter and a highly ionized gas, plays a significant role in various astrophysical phenomena