APPROXIMATE EQUATION OF TIME.

_______________________

| | |

| Date. | Minutes. |

|__________|____________|

| | |

| Jan. 1 | 4 |

| 3 | 5 |

| 5 | 6 |

| 7 | 7 |

| 9 | 8 |

| 12 | 9 |

| 15 | 10 |

| 18 | 11 |

| 21 | 12 |

| 25 | 13 |

| 31 | 14 |

| Feb. 10 | 15 |

| 21 | 14 | Clock

| 27 | 13 | faster

| M'ch 4 | 12 | than

| 8 | 11 | sun.

| 12 | 10 |

| 15 | 9 |

| 19 | 8 |

| 22 | 7 |

| 25 | 6 |

| 28 | 5 |

| April 1 | 4 |

| 4 | 3 |

| 7 | 2 |

| 11 | 1 |

| 15 | 0 |

| |------------|

| 19 | 1 |

| 24 | 2 |

| 30 | 3 |

| May 13 | 4 | Clock

| 29 | 3 | slower.

| June 5 | 2 |

| 10 | 1 |

| 15 | 0 |

| |------------|

| 20 | 1 |

| 25 | 2 |

| 29 | 3 |

| July 5 | 4 |

| 11 | 5 |

| 28 | 6 | Clock

| Aug. 9 | 5 | faster.

| 15 | 4 |

| 20 | 3 |

| 24 | 2 |

| 28 | 1 |

| 31 | 0 |

| |------------|

| Sept. 3 | 1 |

| 6 | 2 |

| 9 | 3 |

| 12 | 4 |

| 15 | 5 |

| 18 | 6 |

| 21 | 7 |

| 24 | 8 |

| 27 | 9 |

| 30 | 10 |

| Oct. 3 | 11 |

| 6 | 12 |

| 10 | 13 |

| 14 | 14 |

| 19 | 15 |

| 27 | 16 | Clock

| Nov. 15 | 15 | slower.

| 20 | 14 |

| 24 | 13 |

| 27 | 12 |

| 30 | 11 |

| Dec. 2 | 10 |

| 5 | 9 |

| 7 | 8 |

| 9 | 7 |

| 11 | 6 |

| 13 | 5 |

| 16 | 4 |

| 18 | 3 |

| 20 | 2 |

| 22 | 1 |

| 24 | 0 |

| |------------|

| 26 | 1 |

| 28 | 2 | Clock

| 30 | 3 | faster.

|__________|____________|

* * * * *

Scientific American Supplement, No. 360, November 25, 1882 · 第 50 / 60 题