NavigationW. & R. Chambers, 1867 - 458페이지 |
도서 본문에서
56개의 결과 중 1 - 5개
vii 페이지
... Logarithms ............ .. Properties of Logarithms , and Exercises .... Page I 9 II 21 17 23 25 28 CONSTRUCTION OF SCALES .. 34 Gunter's Scale ....... 38 On the Sliding Rule ... 43 Description and Use of the Sector ...... 45 PLANE ...
... Logarithms ............ .. Properties of Logarithms , and Exercises .... Page I 9 II 21 17 23 25 28 CONSTRUCTION OF SCALES .. 34 Gunter's Scale ....... 38 On the Sliding Rule ... 43 Description and Use of the Sector ...... 45 PLANE ...
24 페이지
... may represent any number , it may be shewn in the same manner that a ° == 1 , a1 = 1 , a ̄ α a I -2 I = a - 3 I I = and generally a -n = OF LOGARITHMS . 57. Logarithms are numbers in an equidifferent 24 Treatise on Navigation .
... may represent any number , it may be shewn in the same manner that a ° == 1 , a1 = 1 , a ̄ α a I -2 I = a - 3 I I = and generally a -n = OF LOGARITHMS . 57. Logarithms are numbers in an equidifferent 24 Treatise on Navigation .
25 페이지
... logarithms ; and the opera- tion of raising powers and extracting roots of numbers , by multiplying and dividing their logarithms . 58. Logarithms may be calculated to any base ; in ( 52 ) and ( 56 ) the exponents are the logarithms of ...
... logarithms ; and the opera- tion of raising powers and extracting roots of numbers , by multiplying and dividing their logarithms . 58. Logarithms may be calculated to any base ; in ( 52 ) and ( 56 ) the exponents are the logarithms of ...
26 페이지
... logarithms may be calculated by the aid of arithmetic alone . Example . Let it be required to calculate the logarithm of 9 . Here the proposed number lies between 1 and 10 . I First , then , the log . of 10 is 1 , and the log . of 1 is ...
... logarithms may be calculated by the aid of arithmetic alone . Example . Let it be required to calculate the logarithm of 9 . Here the proposed number lies between 1 and 10 . I First , then , the log . of 10 is 1 , and the log . of 1 is ...
27 페이지
... 543 48 4 Log . 9 - +1 * 045757490559 = * 954242509441 This logarithm of 9 is correct to 10 places of decimals ; the last two figures should be 39 instead of 41 . PROPERTIES OF LOGARITHMS . 61. If the power a * Of Logarithms . 27.
... 543 48 4 Log . 9 - +1 * 045757490559 = * 954242509441 This logarithm of 9 is correct to 10 places of decimals ; the last two figures should be 39 instead of 41 . PROPERTIES OF LOGARITHMS . 61. If the power a * Of Logarithms . 27.
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자주 나오는 단어 및 구문
anchor apparent altitude barometer called Cape Cape Clear centre chords chronometer column common logarithms corrected cosec course and distance course steered decimal departure dept difference of latitude difference of longitude dist distance sailed divided equation Example extent will reach find the course given GUNTER'S SCALE hence horizon hypotenuse index error latitude and longitude latitude arrived leeway line of numbers logarithms mast middle latitude miles moon's multiplied Nautical Almanac observed altitude October 20 parallax parallel Parallel Sailing perpendicular place of observation plane Plane Sailing points polar distance port tack quantities quotient radius required the course required the latitude required the true right ascension rope secant semidiameter sextant ship from latitude ship sails ship's side slider starboard tack subtract sun's declination tangent true altitude true course true distance variation vessel wind
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395 페이지 - Nothing in these rules shall exonerate any ship, or the owner, or master, or crew thereof, from the consequences of any neglect to carry lights or signals, or of any neglect to keep a proper look.out, or of the neglect of any precaution which may be required by the ordinary practice of seamen, or by the special circumstances of the case.
395 페이지 - In obeying and construing these rules due regard must be had to all dangers of navigation ; and due regard must also be had to any special circumstances which may exist in any particular case rendering a departure from the above rules necessary in order to avoid immediate danger.
394 페이지 - Every steamship, when approaching another ship so as to involve risk of collision, shall slacken her speed, or if necessary stop and reverse ; and every steamship shall, when in a fog, go at a moderate speed.
391 페이지 - ... abaft the beam on the starboard side, and of such a character as to be visible at a distance of at least 2 miles. (c.) On the...
392 페이지 - ... use : and shall, on the approach of or to other vessels, be exhibited on their respective sides in sufficient time to prevent collision, in such manner as to make them most visible, and so that the green light shall not be seen on the port side nor the red light on the starboard side, nor, if practicable, more than two points abaft the beam on their respective sides.
392 페이지 - ... so constructed as to show a clear, uniform, and unbroken light visible all around the horizon at a distance of at least one mile.
392 페이지 - The said green and red side lights shall be fitted with inboard screens projecting at least three feet forward from the light, so as to prevent these lights from being seen across the bow.
393 페이지 - Sailing pilot vessels shall not carry the lights required for other sailing vessels, but shall carry a white light at the masthead, visible all round the horizon, and shall also exhibit a flareup light every fifteen minutes.
393 페이지 - When two steam vessels are meeting end on, or nearly end on, so as to involve risk of collision, each shall alter her course to starboard so that each may pass on the port side of the other.
393 페이지 - Whenever there is a fog, whether by day or night, the fog signals described below shall be carried and used, and shall be sounded at least every five minutes, viz. : (a...