Εικόνες σελίδας
PDF
Ηλεκτρ. έκδοση

Problem.

Page.

IV. Given the time at Greenwich, to find the corresponding time

under a known meridian......

... 297

V. To reduce the sun's longitude, right ascension, declination, and,

also, the equation of time as given in the Nautical Almanac,

to any other meridian, and to any given time under that

meridian ..

..' 298

VI. To reduce the moon's longitude, latitude, right ascension, declin-

ation, semi-diameter, and horizontal parallax, as given in the

Nautical Almanac, to auy other meridian, and to any given

time under that meridian ..

302

VII. To reduce the right ascension and declination of a planet, as

given in the Nautical Almanac, to any given time under a

known meridian

307

VIII. To compute the apparent time of the moon's transit over the me-

ridian of Greenwich .....

309

IX. Given the apparent time of the moon's transit over the meridian

of Greenwich, to find the apparent time of her transit over any

other meridian....

312

X. To compute the apparent time of a planet's transit over the meri.

dian of Greenwich

313

XI. Given the apparent time of a planet's transit over the meridian of

Greenwich, to find the apparent time of its transit over any

other meridian.....

315

XII. To find the apparent time of a star's transit over the meridian of

any known place.....

317

XIII. To find what stars will be on, or nearest to the meridian at any

given time ..

319

XIV. · Given the observed altitude of the lower or upper limb of the

sun, to find the true altitude of its centre

320

XV. Given the observed altitude of the lower or upper limb of the

moon, to find the true altitude of her centre......

323

XVI. Given the observed central altitude of a planet, to find its true

altitude ...

325

XVII. Given the observed altitude of a fixed star, to find its true

altitude

327

[ocr errors]

Problem.

Page.

VI. Given the altitude of the north polar star, taken at any hour of

the night ; to find the latitude of the place of observation .... 337

Given the latitude by account, the sun's declination, and two

observed altitudes of its lower or upper limb; the elapsed time,

and the course and distance run between the observations; to

find the latitude of the ship at the time of observation of the

greatest altitude ...

341

VIII. Given the altitudes of two known fixed stars observed at the same

instant, at any time of the night; to find the latitude of the

place of observation, independent of the latitude hy account,

the longitude, or the apparent time of observation .... 347

IX. Given the latitude by account, the altitude of the sun's lower or

upper limb, observed within certain limits of noon, the

apparent time of observation, and the longitude; to find the

true latitude of the place of observation.....

.. 354

X. Given the latitude by account, the altitude of the moon's lower or

upper limb, observed within certain limits of the meridian, the

apparent time of observation, and the longitude; to find the

latitude of the place of observation....

358

XI. Given the latitude by account, the altitude of a planet's centre

observed within certain limits of the meridian, the apparent

time of observation, and the longitude; to find the true latitude

of the place of observation ....

.. 362

XII. Given the latitude by account, the altitude of a fixed star observed

within certain limits of the meridian, the apparent time of

observation, and the longitude ; to find the true latitude of the

place of observation ......

To find the latitude by an altitude taken near the meridian below

the pole ...

368 369

Captain William Fitzwilliam Owen's general Problem for finding

the latitude ...

371

XIII. Given the interval of time between the rising or setting of the

sun's upper and lower limbs ; to find the latitude..... 373

[ocr errors]
[merged small][merged small][merged small][ocr errors][merged small]
[merged small][ocr errors][ocr errors]
[ocr errors]
[merged small][merged small][ocr errors]
[ocr errors][merged small]
« ΠροηγούμενηΣυνέχεια »