elektronmassen
Elektronmassen refers to the mass of an electron, a fundamental subatomic particle carrying a negative elementary electric charge. The electron's mass is extremely small, approximately 9.109 x 10^-31 kilograms. This value is a fundamental constant in physics and is often denoted by the symbol m_e. Compared to other fundamental particles, the electron is significantly lighter. For instance, a proton, which is part of the atomic nucleus, has a mass about 1836 times greater than an electron. The precise value of the electron mass is determined through various experimental methods, including measurements of the Zeeman effect and studies of atomic spectra. It plays a crucial role in atomic structure, chemistry, and a wide range of physical phenomena, from electricity and magnetism to quantum mechanics. The concept of electron mass is indispensable for understanding the behavior of matter at the atomic and subatomic levels. Its mass contributes to the overall mass of an atom, though the nucleus contains the vast majority of it.