Principes de navigation, ou, Abrégé de la theorie et de la pratique du pilotage, rédigés par ordre du roi, pour les écoles d'hydrographie ...J. Racine, 1787 - 274 páginas |
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Página 14
... difference of longitude . Or thus by calculation . — Allow 15 degrees difference of longitude for every hour in the difference of time , or 1 degree for every 4 minutes of time . EXAMPLES . 1. When it is noon at a certain place it is 8 ...
... difference of longitude . Or thus by calculation . — Allow 15 degrees difference of longitude for every hour in the difference of time , or 1 degree for every 4 minutes of time . EXAMPLES . 1. When it is noon at a certain place it is 8 ...
Página 12
... latitude and declination are of the same name , but subtract it from the co - latitude , when the one is north and the other south ; the sum or difference will be the sun's meridian altitude on the same parallel of latitude at the ...
... latitude and declination are of the same name , but subtract it from the co - latitude , when the one is north and the other south ; the sum or difference will be the sun's meridian altitude on the same parallel of latitude at the ...
Página 12
... latitude and declination are of the same name , but subtract it from the co - latitude , when the one is north and the other south ; the sum or difference will be the sun's meridian altitude on the same parallel of latitude at the ...
... latitude and declination are of the same name , but subtract it from the co - latitude , when the one is north and the other south ; the sum or difference will be the sun's meridian altitude on the same parallel of latitude at the ...
Página 16
... Difference of Longitude . Look for the nearest de- gree of middle latitude as a course , in Table 2 , and for the de- parture , as near as possible , in a latitude column . Abreast of this in the distance column will be found the difference ...
... Difference of Longitude . Look for the nearest de- gree of middle latitude as a course , in Table 2 , and for the de- parture , as near as possible , in a latitude column . Abreast of this in the distance column will be found the difference ...
Página 10
John Charles Lounsbury Fish. 16. x - Difference and y - Difference . - If two points P and P , are referred to the same origin so that we have P ( XY ) P ( X , Y ) , then of the points P and P , the X - difference is k y- in which the ...
John Charles Lounsbury Fish. 16. x - Difference and y - Difference . - If two points P and P , are referred to the same origin so that we have P ( XY ) P ( X , Y ) , then of the points P and P , the X - difference is k y- in which the ...
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Términos y frases comunes
90 degrés Aftre ainfi angles au-deffus auffi Biffextile Bouffole c'eft c'eft-à-dire calcul cercle compas conféquent Connoiffant connoître corrigé côté Déclinaifon du Soleil degrés de longitude demi-diametre différence en latitude différence en longitude Dift diftance diſtance divifé Eft & Oueft eftimée enfuite eſt Etoiles fe fervir fe trouve fecondes felon fera feule finglé finus foir foit fomme font fouvent fuiv hauteur du Pole heures jour jufqu'à l'afcenfion l'Aftre l'alidade l'angle l'arc l'autre l'Ecliptique l'Eft l'Equateur l'Etoile l'heure l'Horifon l'inftrument l'obfervation l'Oueft Latitude du départ latitude obfervée lieu logar logarithmes longitude d'arrivée lorfqu'on lorfque Loxodromie maniere mefure Méridien méthode midi milles Eft minutes mouvement diurne moyen parallele n'eft Navigation Navire néceffaire Nombre d'Or Nord & Sud paffage paffe parallaxe perpendiculaire Phafe pleine Lune plufieurs premier Méridien premiere Problême propofé puifque Quartier de réduction raifon refte repréfente retrancher route rumb de vent Syzygies Table tems ufage Vaiffeau variation zénit ΙΟ