siemensyöksystä

Siemensyöksy, also known as a lightning strike or a severe electrical discharge, is a rapid and brilliant electric flash in the atmosphere. It occurs due to a significant build-up of electrical charge within a thunderstorm cloud, or between a cloud and the ground. When the electrical potential difference becomes too great, the air's insulating properties are overcome, leading to a massive flow of electric current.

This discharge ionizes the air along its path, creating a superheated channel that expands explosively. This rapid expansion produces the characteristic sound of thunder. Lightning can take various forms, including cloud-to-ground, cloud-to-cloud, and intra-cloud lightning. Cloud-to-ground lightning is the most dangerous to people and property.

The intensity of a lightning strike can vary greatly, but it involves extremely high voltages and currents. These discharges can cause fires, damage structures, and pose a severe threat to life. The associated electromagnetic radiation can also disrupt electronic equipment. While a natural phenomenon, siemensyöksy highlights the immense power of atmospheric electricity.