
Room setup |

Stagger strings - old setup
(note pulley on left, vibrator on right) |

Vibrator attached to bench with clamp |

Connect power cord to variac;
set variac to 100 or so |

Vibrator attachment, rear view |

Attach pulley clamp to bench |

Pulley and small clamp detail |

Align the pulley with the vibrator |

Strobe light place on instructors table |

Vibrating string showing node and antinode |

A nice view of a node |

Another node view |