The Complete Mathematical and General Navigation Tables: Including Every Table Required with the Nautical Almanc in Finding the Latitude and Longitude: with an Explanation of Their Construction, Use, and Application to Navigation and Nautical Astronomy, Trigonometry, Dialling, Gunnery, EtcSimpkin, Marshall, & Company, 1838 |
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Αποτελέσματα 1 - 5 από τα 100.
Σελίδα xii
... plane sailing , usually met with in other nautical books , have been omitted in this ; as these are , in effect , no more than a mere repetition of the cases of right angled plane trigonometry under a dif- ferent denomination . Middle ...
... plane sailing , usually met with in other nautical books , have been omitted in this ; as these are , in effect , no more than a mere repetition of the cases of right angled plane trigonometry under a dif- ferent denomination . Middle ...
Σελίδα xiv
... plane , to its true level at the surface of the sea ; and Problem XIII . ex- hibiting a new rule for finding the height of a mountain , or other emi- nence , by means of two barometers and two thermometers , may be of con- siderable use ...
... plane , to its true level at the surface of the sea ; and Problem XIII . ex- hibiting a new rule for finding the height of a mountain , or other emi- nence , by means of two barometers and two thermometers , may be of con- siderable use ...
Σελίδα xxi
... of the central mirror of the circular instrument 45 45 46 XXIII . Error arising from an inclination of the time of collimation to the plane of the sextant , & c . & c . 47 C Table . XXIV . Logarithmic difference , and how determined.
... of the central mirror of the circular instrument 45 45 46 XXIII . Error arising from an inclination of the time of collimation to the plane of the sextant , & c . & c . 47 C Table . XXIV . Logarithmic difference , and how determined.
Σελίδα xxiii
... PLANE TRIGONOMETRY ..... 156 157 158 160 163 165 168 Definitions and principles , between pages 168 and 170 . SOLUTION OF PRoblems in Right Angled TrigONOMETRY . I. II . III . IV . Given the angles and the hypothenuse , to find the base ...
... PLANE TRIGONOMETRY ..... 156 157 158 160 163 165 168 Definitions and principles , between pages 168 and 170 . SOLUTION OF PRoblems in Right Angled TrigONOMETRY . I. II . III . IV . Given the angles and the hypothenuse , to find the base ...
Σελίδα xxvii
... plane of the sextant , & c . To set the horizon - glass perpendicular to the plane of the sextant , & c . To set the horizon - glass by means of the sun's image .. To set the horizon - glass parallel to the index - glass .... 317 317 ...
... plane of the sextant , & c . To set the horizon - glass perpendicular to the plane of the sextant , & c . To set the horizon - glass by means of the sun's image .. To set the horizon - glass parallel to the index - glass .... 317 317 ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
90 degrees add the log angle of meeting answering approximate auxiliary angle celestial object co-secant co-sine co-tangent co-versed sine comp computed Constant log Corr correction course and distance decimal fraction departure Diff difference of latitude difference of longitude distance sailed earth equal equator Example find the Angle find the Difference fixed star given angle Given arch given log given side hence hypothenuse A C leg AC mean solar merid meridian meridional difference middle latitude miles minutes moon's apparent altitude moon's horizontal parallax multiplied natural number natural sine natural versed sine Nautical Almanac noon observation perpendicular B C plane PROBLEM prop proportional log quadrant radius reduced refraction right angled right ascension right-hand rising and setting secant semidiameter ship side A B side BC sidereal day spherical distance spherical triangle star's subtracted Table tabular tangent trigonometry true altitude tude versed sine supplement
Δημοφιλή αποσπάσματα
Σελίδα 59 - Also, between the mean, thus found, .and the nearest extreme, find another geometrical mean, in the same manner ; and so on, till you are arrived within the proposed limit of the number whose logarithm is sought.
Σελίδα 206 - For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts called seconds.
Σελίδα 258 - If two triangles have two angles of the one equal to two angles...
Σελίδα 59 - ... progression, to which those indices belong. Thus, the indices 2 and 3, being added together, make 5 ; and the numbers 4 and 8, or the terms corresponding to those indices, being multiplied together, make 32, which is the number answering to the index 5.
Σελίδα 59 - And, if the logarithm of any number be divided by the index of its root, the quotient will be equal to the logarithm of that root. Thus the index or logarithm of 64 is 6 ; and, if this number be divided by 2, the quotient will be = 3, which is the logarithm of 8, or the square root of 64.
Σελίδα 152 - RULE. Divide as in whole numbers, and from the right hand of the quotient point off as many places for decimals as the decimal places in the dividend exceed those in the divisor.
Σελίδα 153 - When there happens to be a remainder after the division ; or when the decimal places in the divisor are more than those in the dividend ; then ciphers may be annexed to the dividend, and the quotient carried on as far as required.
Σελίδα 154 - REDUCTION OF DECIMALS. CASE I. . To reduce a Vulgar Fraction to a Decimal Fraction of equal value.
Σελίδα 177 - II. The sine of the middle part is equal to the product of the cosines of the opposite parts.
Σελίδα 243 - II. the difference of latitude and departure corresponding to each course and distance, and set them in their respective columns : then the difference between the sums of the northings and southings will be the difference of latitude made good, of the same name with the greater ; and the difference between the sums of the eastings and westings will be the departure made good, of the same name with the greater quantity.