firsty.mp4 | Something is better than nothing. |

first.mp4 | Learning about the variable known as time. |

second.mp4 | Nice, it's sinusoidal! 0-dimensional. |

third.mp4 | A sine in 1-d. |

fourth.mp4 | 2-D Sine varying with x and y (and time, shown on z) rectilinearly. |

fifth.mp4 | 2D but varying with radius not x & y. Equal energy in each ring. |

sixth.mp4 | Semi-3D: 2D wrapped around a sphere. Not equal energy but equal amplitude rings (small rings have less total energy). |

seventh.mp4 | Equal energy in each ring, again. |

eighth.mp4 | One going up, another going down, add them together at the same time, you get a standing wave. |

ninth.mp4 | Two standing waves with different energy levels, different axes on the sphere, different time frequency, different spatial frequency. (There's an absolute value in there to fix: see the discontinuity at one of the equators. |

tenthy.mp4 | Fixed the absolute value, included some frames from a different run by mistake. |

tenthish.mp4 | This loop is periodic on the vertical standing wave, but not on the diagonal wave, which jumps 180 degrees at the loop instant. |

eleventh.mp4 | There we go. Two cycles on the vertical for three cycles on the diagonal. Still equal-energy rings. Pine-cones and coronaviruses aren't so polarly-peaky. |

twelfth.mp4 | That's getting closer to a pine cone. |