Physics is a natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force. More broadly, it is the study of nature in an …

This Physics resource introduces physics and scientific processes followed by chapters focused on motion, mechanics, thermodynamics, waves, and light.

Contemporary research in physics can be broadly divided into nuclear and particle physics; condensed matter physics; atomic, molecular, and optical physics; astrophysics; and applied physics.

Dec 28, 2025 · Physics is the branch of science that deals with the structure of matter and how the fundamental constituents of the universe interact. It studies objects ranging from the very small using …

Learn how to convert units, with automatic unit canceling. Get practice with prefixes (e.g. kilo, milli, centi) and convert between meters and feet, ounces and grams, and more. The free, interactive, easy way …

The Physics Classroom Tutorial presents physics concepts and principles in an easy-to-understand language. Conceptual ideas develop logically and sequentially, ultimately leading into the …

The Physics Hypertextbook is a reaction to three big problems with textbooks: lack of writer's voice, layouts that reduce readability, and outdated economics.

Our interactive Physics and Chemistry Tutorials are our own free textbooks, written at a high school reading level (and by teachers, not AI), with helpful images, understanding checks, and links to …

Physics describes the way that electricity flows through the circuits of this device. Engineers use their knowledge of physics to construct an iPhone with features that consumers will enjoy.

Learn physics using videos, articles, and NGSS-aligned practice exercises. Explore the fundamentals of motion and forces, non-contact interactions, energy, and waves.