Atomic Structure Diagram - Bohr Model Illustration for Science Education #3597904 (License: Personal Use)

This black-and-white line illustration represents the early 20th-century Bohr model of the atom, where electrons orbit the nucleus in discrete, quantized energy levels. The central black circle symbolizes the nucleus (protons and neutrons), while three smaller circles trace elliptical paths to indicate electron orbits. Though superseded by quantum mechanical models, this depiction remains widely used for introductory science education due to its intuitive clarity.

Commonly used in educational websites, textbooks, and classroom presentations to introduce atomic theory; targets students, teachers, and general audiences seeking foundational science visuals.