a-t graph | Varying Acceleration |

about | Editorial |

absolute zero | Thermal Expansion |

absorption | Absorption |

| Interaction of Light with Matter |

accelerating spacecrafts | The slingshot effect |

acceleration | Homework Problems |

| Accelerating a cart |

| Newton’s Second Law |

| An accelerating bus |

| Positive and Negative Acceleration |

| Varying Acceleration |

| Summary - Acceleration |

| The Acceleration Vector |

acceleration vector | Summary - Vectors and Motion |

addition of vectors | Order of addition |

Albert Einstein | Albert Einstein |

alpha decay | The Strong Nuclear Force, Alpha Decay and Fission |

| The Weak Nuclear Force; Beta Decay |

alpha radiation | Radioactivity |

amplitude | Period, Frequency, and Amplitude |

angular momentum | Introduction to Angular Momentum |

| Conservation of Angular Momentum |

| Restriction to rotation in a plane |

| Angular Momentum in Planetary Motion |

| Two Theorems About Angular Momentum |

| Torque: the Rate of Transfer of Angular Momentum |

| Summary - Angular Momentum |

| Angular Momentum in Three Dimensions |

| Summary - Atom |

| Discussion - Angular Momentum |

antenna | Wavelength of radio waves |

antineutrino | The Weak Nuclear Force; Beta Decay |

area | Scaling of Area and Volume |

| Scaling of Irregular Objects |

Aristotle | The Motion of Falling Objects |

ATLAS accelerator | ATLAS accelerator |

| Superconductors |

atom | The discovery of the neutron |

| Direct proof that atoms existed |

atom model | The Planetary Model of the Atom |

atom nucleus | Sizes and shapes of nuclei |

atomism | Atomism |

average | Applications of Calculus |

average lifetime | Average lifetime |

Avogadro's number | Pressure, volume, and temperature |