NaCl | Dipole moment of a molecule of NaCl gas |

nano | Less Common Metric Prefixes |

negative acceleration | Positive and Negative Acceleration |

neutrino | The Weak Nuclear Force; Beta Decay |

| The Mass of the Neutrino |

neutron | The discovery of the neutron |

| The Neutron |

Newton | Introduction |

| The Quest for the Atomic Force |

| Isaac Newton |

| Galileo and Newton |

Newton's laws | Summary - Newton's Laws of Motion |

Newton’s first law | Newton’s First Law |

Newton’s second law | Newton’s Second Law |

Newton’s third law | Newton’s Third Law |

Nimitz Freeway | Collapse of the Nimitz Freeway in an earthquake |

NMR | Nuclear magnetic resonance |

noninertial frame of reference | Inertial and Noninertial Frames of Reference |

nonuniform fields | Voltage for Nonuniform Fields |

notation | Notation |

nuclear energy | Nuclear Energy and Binding Energies |

nuclear fission | The Strong Nuclear Force, Alpha Decay and Fission |

nuclear fusion | Fusion |

nuclear magnetic resonance | Nuclear magnetic resonance |

nuclear reaction | Energy production in the sun |

nucleus | Sizes and shapes of nuclei |