ABSTRACT
Electrical contacts are the most important components of electrical machines and electric engineering and telecommunication devices because they provide efficiency. The necessity of developing reliable electrical contact dates the beginning of the nineteenth century, when the first electrical machines were used. B. S. Yakobi developed commutating devices similar to a collector with brushes in 1834. In the twenty-first century, electric energy will remain one of the most basic needs for civilization. A huge number of various electrical contacts will be used in the process of energy production, transmission, distribution, and usage. Different types of contacts should satisfy different sets of requirements depending on their stability and reliability. These problems can be addressed and solved by the careful consideration of the application, design, and operating conditions of electrical contacts. One of the most important problems in providing reliability to electrical contact is the discrete nature of the interface.
