The Mariner's Compass Rectified: Containing Tables, Shewing the True Hour of the Day ... With Tables of Amplitudes. Which Tables of Sun-dials [etc.] are Calculated from the Equator to 60 Degrees of Latitude ... With the Description and Use of Those Instruments Most in Practice in the Art of Navigation. Also a Table of Latitude and Longitudes of PlacesJ. Mount, T. Page, W. Mount, and T. Page, 1780 - 275 páginas |
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The Mariner's Compass Rectified: Containing Tables, Shewing the True Hour of ... Andrew Wakely Sin vista previa disponible - 2016 |
Términos y frases comunes
0.00 Eaft Weft 12 North 29m Point h 60 Degrees againſt Anfwer ATABLE fhewing Compafs Courfe Courſe d7 dio Degrees of Declination Degrees of Latitude Diameter Difference of Latitude Difference of Longitude Diſtance Eaft Longitude Eaft Weft 0.00 Eaſt ebn wbn ebs wbs Example fame fecond Feet firft fourth Number fubtract hath South Declination Ifland Inches Length Line of Numbers Longitude md m Ampl md md md Meaſure mh m 12 mh m South mh mh mh Minutes North 12 North Dec North Latitude Obfervation Ofet d. m. Ofet Eaft Weft Plane Sailing Point h mh PROB Proportion Radius Rifing and Setting Semidiurnal Arch Seminocturnal Arch Sliding Gunter South 12 South Dec South South SSW sw Star Star's Sun hath North Sun-Dial Sun's d md Sun's Declination Sun's Meridian Altitude sw by w sw byw Tangent theſe Weft 0.00 Eaft Weſt whofe
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Página 178 - Latitude is to the Departure, fo is the Radius to the Difference of Longitude...
Página 183 - ... converted into time, shows how long it is after 6 o'clock before the sun rises, and how long before 6h the sun sets. The longest night and shortest day, therefore, become equal respectively to the longest day and shortest night, as before found. It will be perceived from what is above shown, that when the latitude and declination are both north or both south, the sun rises before and sets after 6 o'clock ; but when one is north and the other south, the sun rises after and sets before 6. 89. We...
Página 175 - Radius, is to the tangent of the course; as the meridional difference of latitude, is to the Difference of longitude.
Página 175 - Radius : : £? is the Departure : to the Tangent of the Courfe. And, As the Co-fine of the Courfe : is to the Difference of Latitude : : fo is Radius : to the Diftance made good in the 24 Hours.
Página 123 - ... the true Hour of the Day, the Sun being upon any Point of the Compass: With the true Time of the Rising and Setting of the Sun and Stars, and the Points of the Compass upon which they Rise and Set: With Tables of Amplitudes. Which Tables of SunDials, Semidiurnal Arches and Amplitudes are calculated from the Equator to 60 Degrees of Latitude, either North or South. With the Description and Use of those Instruments most in Use in the Art of Navigation. Also A Table of Latitudes and Longitudes of...
Página 185 - To find the Sun's Altitude at 6, the Proportion is; As the Radius, is to the Sine of the Latitude ; fo is the Sine' of the Sun's Declination, to the Sine of the Sun's Altitude at the Hour of 6.
Página 136 - Set 4 againft 6, and againft 9 on the firft is 13.5 on the fecond ; then againft 13.5 on the firft, is 20.2 on the fecond ; and againft 20.2 on the firft, is 30,3 on the fecond, that is 30 Pounds 3 Tenths, as before.
Página 108 - Arches. r~o find the Time of the Sun's Rifing and Setting, and the Length of the Day, and Night, by thefe Tables.
Página 168 - Degrees on -the Line of Sines, to 98 Leagues, on the Line of Numbers, will reach from 44d.
Página 165 - Min. (on the Line of Numbers) will reach the fame Way from 3 Points (on the Line of Sine Rhumbs) to 58m.