https://soh-cah-toa.pages.dev/tags/nuclear-physics/ Recent content in Nuclear Physics on SOH-CAH-TOA Hugo en-us Wed, 14 Oct 2026 12:50:56 +0700 https://soh-cah-toa.pages.dev/guides/physics/nuclear_physics/ Wed, 14 Oct 2026 12:50:56 +0700 https://soh-cah-toa.pages.dev/guides/physics/nuclear_physics/ <h2 id="1-atoms-and-nuclei">1. Atoms and nuclei</h2> <p>An atom has a tiny, positively charged nucleus surrounded by negatively charged electrons. Most of an atom is empty space. A neutral atom has equal numbers of protons and electrons. Losing electrons forms a positive ion; gaining electrons forms a negative ion.</p> <h3 id="alpha-scattering-experiment">Alpha-scattering experiment</h3> <p>Rutherford directed alpha particles at thin gold foil and used a surrounding screen to detect where they went. Most passed straight through; some deflected, and very few bounced back. Close approaches to the positively charged nucleus repelled the positively charged alpha particles.</p>