## Lunar and time tables, adapted to new methods for finding the longitude by chronometers and lunar distances. With an appendix |

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### Common terms and phrases

2d arc according added additive apparent altitude Apparent Distance applied ascertained Auxiliary Arc body Calculation centre Chronometer Chronometer showed column Corr correction corresponding Cosecant Sine Tangent daily deduced Degrees difference Dist Earth East Equation error evident EXAMPLE feet figure fixed star formula gaining given gives greater Green Greenwich Greenwich mean Half-cosine Half-sine height Hence increasing interval July June Latitude less Logarithmic Sines Longitude lower limb Lunar Distance Mathematical mean Meridian Distance method minutes Moon Moon's Moon's Horizontal Parallax Nautical Almanac nearest nearly noon Note observed obtained Planet Proportional Logarithms reckoning Refraction remainder REMARK Required result right ascension Rule semidiameter ship Sine Tangent Cosecant subtract Sun's Sun's altitude Sun's declination Table Table contains taken Tangent Cosecant Sine term True Distance variation watch

### Popular passages

Page 5 - The civil day, which is that used by the generality of mankind, begins at midnight, and ends at the midnight following : it is divided into two parts of 12 hours each ; the first...

Page 62 - ADD TOGETHER THE LOGARITHMS OF THE SECOND AND THIRD TERMS, AND FROM THEIR SUM SUBTRACT THE LOGARITHM OF THE FIRST...

Page 37 - ... will be the right ascension of the meridian ; the difference between which and the right ascension of the...

Page vii - I cannot adequately express, the letter which you did me the honour to address to me on the 22nd instant.

Page 5 - The civil day, which is that adopted for the usual purposes of business, begins at midnight, and ends at the midnight following ; it is divided into two parts of 12 hours each ; the first 12 are marked AM, signifying ante meridiem, ie before the meridian or noon ; and the other 12 are marked p.

Page 12 - ... will be the right ascension of the meridian. From the right ascension of the meridian (increased by 24 hours if necessary) subtract the sun's right ascension...

Page 9 - ... 2. Absolute Times. [1.] To convert Apparent Time into Mean Time. 605. Reduce the Equation of Time, taken from page I. of the Nautical Almanac, or from Table 62 by No. 583, or 584, and apply it to the given App.