<span>In chemistry and physics, the atomic theory explains how our understanding of the atom has changed over time. Atoms were once thought to be the smallest pieces of matter. The first idea of the atom came from the Greek philosopher Democritus. Hope I helped!!</span>
Atomic theory<span> is a scientific </span>theory<span> of the nature of matter. </span>The atomic theory has changed over time as new technologies have become available. Scientific knowledge builds on past research and experimentation. Democritus, a philosopher in ancient Greece, began the search for a description of matter. ... He believed that the smallest possible piece of matter was indivisible.
When a ray of light passes through a glass slab of a certain thickness, the ray gets displaced or shifted from the original path. This is called lateral shift/displacement.
