Physics
Accelerate your understanding of how matter and energy work. These physics resources introduce the history of the field and simplify its major theories and laws.

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The Difference Between Terminal Velocity and Free Fall 
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Introduction to Vector Mathematics 
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An Introduction to Brownian Motion 
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What Is Entropy and How to Calculate It 
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What Speed Actually Means in Physics 
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What Is Velocity in Physics? 
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An Introduction to Density: Definition and Calculation 
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Calculating Torque 
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A Scientific Way to Define Heat Energy 
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What Is the Definition of "Matter" in Physics? 
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Moment of Inertia Formulas 
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Introduction to the Major Laws of Physics 
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Pressure Definition, Units, and Examples 
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6 Kinds of Simple Machines 
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Surface Tension  Definition and Experiments 
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The 4 Fundamental Forces of Physics 
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Temperature Definition in Science 
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Thermodynamics: Adiabatic Process 
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The Physics of a Car Collision 
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Hypothesis, Model, Theory, and Law 
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Huygens' Principle of Diffraction 
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How Does a Lever Work and What Can It Do? 
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Oscillation and Periodic Motion in Physics 
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What Is Viscosity in Physics? 
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How Physics Works 
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Understanding What Fluid Dynamics is 
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What Is Mass? 
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Nuclear Isomer Definition and Examples 
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The Basics of Physics in Scientific Study 
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Movies That Realistically Present Physics 
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Stellar Nucleosynthesis: How Stars Make All of the Elements 
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Interference, Diffraction & the Principle of Superposition 
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What Is Dry Ice? 
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Multiverse Definition and Theory 
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Kelvin's "Clouds" Speech 
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Understanding Momentum in Physics 
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What Is an Isothermal Process in Physics? 
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Understanding Time Dilation Effects in Physics 
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How to Define Acceleration 
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What You Should Know About Electronics and Electricity 
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Kirchhoff's Laws for Current and Voltage 
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Definition of Force in Physics 
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What Is Isobaric Process? 
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Impulse  Force Over Time 
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Quantum Zeno Effect 
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What Is the Definition of Work in Physics? 
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Turkey Cooking: Physics and Thermodynamics 
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Popular Physics Myths 
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Definition of Torque in Physics 
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The Different Fields of Physics 
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What Skills Do I Need to Study Physics? 
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Inertia and the Laws of Motion 
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What Is the SteadyState Theory in Cosmology? 
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Energy: A Scientific Definition 
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Perfectly Inelastic Collision 
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The Isochoric Process 
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Superconductor Definition, Types, and Uses 
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How Electromagnetic Induction Creates Current 
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Defining Power in Physics 
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Cathode Ray History 
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Definition of Quarks in Physics 
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What Is a Photon in Physics? 
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What Is Conduction? 
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Does the Ice Diet Work? 
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How RoomTemperature Superconductivity Could Change the World 
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Particle Physics Fundamentals 
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Fundamental Physical Constants 
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Five Great Problems in Theoretical Physics 
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Using Significant Figures in Precise Measurement 
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Wave Particle Duality and How It Works 
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What Is Moment of Inertia in Physics? 
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Creating a Mad Scientist Costume 
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Young's Double Slit Experiment 
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Defining the Meissner Effect in Quantum Physics 
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How Does Doppler Radar Work? 
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Supersymmetry: A Possible Ghostly Connection Between Particles 
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What Is an Electrical Current? 
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Television Shows for Physicists 
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Voltage Definition in Physics 
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Physics: Fermion Definition 
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The Large Hadron Collider and the Frontier of Physics 
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What Is a Boson? 
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Density of Common Substances 
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What You Need to Know About the Weak Force 
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International System of Measurement (SI) 
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Closed Timelike Curve 
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What Is a Transistor? 
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A History of Ancient Greek Physics 
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The Doppler Effect for Sound Waves 
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History and Properties of MTheory 
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An Idealized Model in Physics 
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Fluid Statics 
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Copernican Principle 
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A Biographical Profile of Neil deGrasse Tyson 
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'Cosmos: A Spacetime Odyssey' Episode 1 Recap and Review 
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What is an Inelastic Collision in Physics? 
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Specific Gravity 
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The Cyclotron and Particle Physics 
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Science Comic Books 
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Mathematical Properties of Waves 
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What is a Synchrotron? 
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Sublimation 
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Sources of Power Production 
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Why Should You Study Physics? 
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Ohm's Law 
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Dark Energy in Physics 
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Can Science Prove Anything? 
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Free Falling Body 
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What Is Elastic Collision? 
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Definition of a Phase Diagram 
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How Lasers Work 
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Angular Velocity 
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Proton Definition 
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BoseEinstein Condensate 
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Wormhole 
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What Are Clarke's Laws? 
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Olbers' Paradox  Why the Night Sky Is Dark 
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Definition of 'Brane' 
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All About the Muon 
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Dimensional Analysis: Know Your Units 
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Neutrinos in Particle Physics 
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What Is an Electric Field? Definition, Formula, Example 
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How Does Static Electricity Work? 
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What Are Sources of Electricity That Charge Your Life? 
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What Is the Shear Modulus? 
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What Is Magnetism? Definition, Examples, Facts 
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The History of Gravity 
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The Relationship Between Electricity and Magnetism 
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What Is Young's Modulus? 
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What Is Natural Frequency? 
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Doppler Effect in Light: Red & Blue Shift 
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What Is Buoyant Force? Origins, Principles, Formulas 
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The Science of Magnetic Field Lines 
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History of the MichelsonMorley Experiment 
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Introduction to Newton's Laws of Motion 
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Newton's Law of Gravity 
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OneDimensional Kinematics: Motion Along a Straight Line 
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Can Anything Move Faster Than the Speed of Light? 
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TwoDimensional Kinematics or Motion in a Plane 
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Einstein's Theory of Relativity 
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Quantum Physics Overview 
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How Quantum Levitation Works 
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The Basics of String Theory 
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The Copenhagen Interpretation of Quantum Mechanics 
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The Photoelectric Effect 
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De Broglie Hypothesis 
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What Is Quantum Optics? 
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EPR Paradox in Physics 
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Using Quantum Physics to "Prove" God's Existence 
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Everything You Need to Know About Bell's Theorem 
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Understanding the "Schrodinger's Cat" Thought Experiment 
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Understanding the Heisenberg Uncertainty Principle 
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What Is Blackbody Radiation? 
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What the Compton Effect Is and How It Works in Physics 
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The Many Worlds Interpretation of Quantum Physics 
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Can Quantum Physics Be Used to Explain the Existence of Consciousness? 
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Quantum Entanglement in Physics 
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Introduction to the Dirac Delta Function 
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The Discovery of the Higgs Energy Field 
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Quantum Computers and Quantum Physics 
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What Is Quantum Gravity? 
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The Casimir Effect 
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Albert Einstein: What Is Unified Field Theory? 
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Erwin Schrödinger and the Schrödinger's Cat Thought Experiment 
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Joseph Henry, First Secretary of the Smithsonian Institution 
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Leo Szilard, Creator of Manhattan Project, Opposed Use of Atomic Bomb 
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Heinrich Hertz, Scientist Who Proved Existence of Electromagnetic Waves 
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Biography of John Bardeen, Nobel PrizeWinning Physicist 
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Life of Léon Foucault, Physicist Who Measured the Speed of Light 
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Biography of Christian Doppler, Mathematician and Physicist 
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Life and Work of Gustav Kirchhoff, Physicist 
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Biographical Profile of Niels Bohr 
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Biography of Brian Cox 
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Biography of Hans Bethe 
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Biography of Stephen Hawking, Physicist and Cosmologist 
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Niels Bohr Institute 
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Biography of Physicist Paul Dirac 
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1987 Nobel Prize in Physics 
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Leonard Susskind Bio 
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The Life and Work of Albert Einstein 
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What Is ModelDependent Realism? 
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Michio Kaku Biography 
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Pictures of Albert Einstein 
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What Is the Zeroth Law of Thermodynamics? 
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What Is Bulk Modulus? 
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Definition and Examples of Latent Heat 
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Laws of Thermodynamics 
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Specific Volume 
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What Is a Thermodynamic Process? 
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Kinetic Molecular Theory of Gases 
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Understanding Calorimetry to Measure Heat Transfer 
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An Overview of Thermodynamics 
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Calculating Heat Current 
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Introduction to Heat Transfer: How Does Heat Transfer? 
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What Is the Boltzmann Brains Hypothesis? 
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Description & Origins of Inflation Theory 
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Why Do Stars Burn and What Happens When They Die? 
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Understanding Cosmology and Its Impact 
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Does Time Really Exist? 
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What Physicists Mean by Parallel Universes 
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What Is the Twin Paradox? Real Time Travel 
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Is Time Travel Possible? 
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Understanding the BigBang Theory 
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Are There Multiple Universes? 
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What Is the Anthropic Principle? 
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What is a Black Hole? 
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Black Holes and Hawking Radiation