Ydinkuori

Ydinkuori is a Finnish term that translates to "atomic nucleus" in English. It refers to the central core of an atom, which is composed of protons and neutrons, collectively known as nucleons. The protons carry a positive electric charge, while neutrons have no charge. The number of protons in an atom's nucleus determines its atomic number, which defines the element. The number of neutrons can vary, leading to different isotopes of the same element.

The ydinkuori is incredibly dense, containing almost all of the atom's mass. The forces holding the nucleons together are extremely strong, known as the strong nuclear force, which overcomes the electrostatic repulsion between the positively charged protons. The size of the ydinkuori is minuscule compared to the overall size of the atom, with electrons orbiting far beyond it. Understanding the ydinkuori is fundamental to nuclear physics and has led to advancements in fields such as nuclear energy and medical imaging.