Physics, Chemistry, and the Laws That Govern Matter
The physical sciences describe how the universe works at every scale, from subatomic particles to stars, from single molecules to engineered materials. These guides cover the core disciplines with real equations, real examples, and real depth.
Mechanics, Electromagnetism, Quantum, and Beyond
The fundamental laws of motion, energy, light, and matter, from Newton's laws through quantum mechanics and general relativity.
Quantum Mechanics
Wave-particle duality, superposition, entanglement, the uncertainty principle, quantum tunneling, and the mathematics of the subatomic world. 30 guides.
Classical Mechanics
Newton's laws, momentum, energy, projectile motion, fluid mechanics, oscillations, and the physics of everyday forces and motion. 25 guides.
Thermodynamics
The four laws, entropy, heat transfer, phase transitions, heat engines, statistical mechanics, and the physics of energy and temperature. 25 guides.
Electromagnetism
Electric and magnetic fields, Maxwell's equations, circuits, electromagnetic waves, radio, superconductivity, and the force that powers technology. 25 guides.
Relativity
Special and general relativity, time dilation, spacetime, gravitational waves, black holes, and Einstein's framework for understanding the universe. 22 guides.
Nuclear Physics
Fission, fusion, radioactivity, particle accelerators, nuclear energy, nuclear medicine, and the physics of the atomic nucleus. 22 guides.
Optics & Light
Reflection, refraction, lenses, lasers, fiber optics, the electromagnetic spectrum, and the physics of how light behaves and how we see. 20 guides.
Reactions, Elements, and the Molecules of Life
How atoms combine, react, and build the molecules and materials that make up everything from living cells to engineered alloys.
Periodic Table
Element groups, electron configuration, periodic trends, isotopes, rare earth elements, and the organizational system behind all of chemistry. 25 guides.
Chemical Reactions
Reaction types, balancing equations, equilibrium, catalysts, electrochemistry, stoichiometry, and the energetics of how substances transform. 25 guides.
Organic Chemistry
Carbon bonding, functional groups, reaction mechanisms, polymers, stereochemistry, pharmaceutical chemistry, and the chemistry of carbon compounds. 28 guides.
Biochemistry
Proteins, enzymes, DNA structure, metabolism, cellular respiration, photosynthesis, and the molecular machinery of living systems. 22 guides.
Materials Science
Metals, ceramics, polymers, semiconductors, nanomaterials, superconductors, graphene, and the engineering of materials with specific properties. 20 guides.
Chemistry Experiments
Crystal growing, electrochemistry, chromatography, flame tests, pH testing, polymer making, and safe chemistry experiments you can do at home. 22 guides.