What is the importance of the pointed head of the lightning rod?

In the winter season, various lightning and thunderbolts often appear, which often, if strong, pose a great danger to people because they contain electrical charges that may often be so strong that they may affect people and take their lives. Where some very dangerous storms may occur, which clearly and tangibly affect people and property, and often in European countries some storms of strong force occur, which may kill people and endanger the lives of many, due to the strength of the storms, which often result in some lightnings of great magnitude. The great force, which is commensurate with the strength of the storm, which threatens people's lives and security.

Therefore, I took a lot of the necessary measures to avoid the danger resulting from lightning strikes, and to avoid all the dangers that it could cause, especially if it has a large electrical charge and may cause great damage to many people, and among these measures is their design of what is known as a lightning rod, which is One of the tools used to prevent the arrival of lightning strikes of different strength to individuals and to curb their spread and the expansion of their harm to people, as it is based on a simple principle, which is the discharge of the electric charge in the ground instead of spreading and distributing it, as it is installed on high buildings and towers to avoid that lightning strikes those buildings and is based on its division and destruction .

One of the most important characteristics of the lightning rod is that it is made of metal and consists mainly of a pointed head at the end of this piece of metal. A physical principle revolves around that, which is that the excess electrical charges settle completely on the outer surface of the conductor, and then these charges are distributed on the surface of the conductor with great density. And with a regular distribution, meaning that these charges are equal to a fixed amount, and therefore the charge distribution is on the most curved place, such as the piece on the lightning rod, where the largest amount of charges rests on it and more than other surfaces that do not tend to curve, and this means that the largest amount of charges will be concentrated in the pointed head And it is very large, and this leads us to another principle, which is that this large increase in the amount of charge on the pointed head works to increase the electric field in the vicinity in the surrounding area, and this is what air represents in the lightning rod, and air is considered an electrical insulator, so the more the amount of these charges increases, it ionizes and becomes conductive.