magnetic distribution | Exploration of a Magnetic Field |

magnetic field | Exploration of a Magnetic Field |

magnetic needle | Work done in Turning the Magnetic Needle |

Maxwell's vibration needle | Maxwell's Vibration Needle |

measurement | Physical Measurements |

| The British Association Wire Bridge |

measurement of a volume | Determination of Volumes by Weighing |

measurement of angles | Measurement of Angles |

measurement of time | Measurements of Time |

measurement units | The C.G.S. System |

mercury barometer | The Mercury Barometer |

mixing of colors | The Colour Top |

modes of vibration | Determination of the Absolute Pitch of a Note |

modulus of torsion | Maxwell's Vibration Needle |

| Summary of the General Theory of Elasticity |

| Modulus of Torsion of a Wire |

moment of inertia | Maxwell's Vibration Needle |

| Modulus of Torsion of a Wire |

musical note | Acoustics - Definitions |