Handbook of AstronomyLockwood & Company, 1875 - 528 |
Z wnętrza książki
Wyniki 1 - 5 z 85
Strona 30
... follows , therefore , that half a lens will produce at the focus an image of a distant object , and if two halves of the same lens be placed concentrically , they will form two images , the exact super- position of which will , in fact ...
... follows , therefore , that half a lens will produce at the focus an image of a distant object , and if two halves of the same lens be placed concentrically , they will form two images , the exact super- position of which will , in fact ...
Strona 47
... follows also that the length of a second is a hundred feet very nearly, a measure also easily remembered Nothing can be more easy, after what has been stated, than the solution of the problem to determine the earth's diameter. If r ...
... follows also that the length of a second is a hundred feet very nearly, a measure also easily remembered Nothing can be more easy, after what has been stated, than the solution of the problem to determine the earth's diameter. If r ...
Strona 44
... follows that the curvature of the surface prevails all around that point ; and since the extent of the depression of the points s , s ' , s " , & c . at equal distances from o , are equal in every direction around o , it follows that ...
... follows that the curvature of the surface prevails all around that point ; and since the extent of the depression of the points s , s ' , s " , & c . at equal distances from o , are equal in every direction around o , it follows that ...
Strona 47
... follows also that the length of a second is a hundred feet very nearly , a measure also easily remembered Nothing can be more easy , after what has been stated , than the solution of the problem to determine the earth's diameter . If r ...
... follows also that the length of a second is a hundred feet very nearly , a measure also easily remembered Nothing can be more easy , after what has been stated , than the solution of the problem to determine the earth's diameter . If r ...
Strona 56
... . It further results from these theoretical researches that the mean density of the entire terrestrial spheroid is about twice the mean density of its superficial crust . It follows from this that the density of its central 56 ASTRONOMY .
... . It further results from these theoretical researches that the mean density of the entire terrestrial spheroid is about twice the mean density of its superficial crust . It follows from this that the density of its central 56 ASTRONOMY .
Spis treści
106 | |
112 | |
129 | |
135 | |
150 | |
156 | |
181 | |
185 | |
191 | |
205 | |
217 | |
230 | |
233 | |
234 | |
239 | |
247 | |
254 | |
258 | |
271 | |
299 | |
308 | |
312 | |
313 | |
397 | |
402 | |
403 | |
408 | |
409 | |
419 | |
440 | |
442 | |
445 | |
451 | |
467 | |
486 | |
494 | |
495 | |
504 | |
511 | |
522 | |
525 | |
528 | |
16 | |
6 | |
11 | |
27 | |
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
altitude aphelion apparent diameter apparent magnitude apparent motion appear ascertained Astronomer Royal astronomical atmosphere attraction axis azimuth bodies C. H. F. Peters celestial equator celestial sphere centre circle clock comet conjunction density determined direction disk diurnal diurnal motion earth ecliptic edge effect elongation Engineering equal equatorial equinoxial points excentricity feet firmament fixed globe greater greatest Greenwich heavens hemisphere Herschel horizon increase inferior conjunction inferior planet instrument interval Jupiter latitude length less light line of collimation longitude lunar mass mean distance measured meridian moon moon's move nearly nebula object Observatory observed orbit parallax pendulum perihelion period phenomena planet Plate polar pole position prime vertical produced ratio represented revolution revolve right angles right ascension ring rotation satellites Saturn seen sidereal solar system sphere spots stars sun's superior conjunction supposed surface synodic period telescope terrestrial tion transit Uranus velocity visible visual wires zenith
Popularne fragmenty
Strona 503 - Villa Architecture. A HANDY BOOK of VILLA ARCHITECTURE ; being a Series of Designs for Villa Residences in various Styles. With Detailed Specifications and Estimates. By C. WICKES, Architect, Author of " The Spires and Towers of the Mediaeval Churches of England,
Strona 483 - HADDON'S RUDIMENTARY ARITHMETIC. By A. ARMAN. is. 6d. 168. DRAWING AND MEASURING INSTRUMENTS. Including — I. Instruments employed in Geometrical and Mechanical Drawing, and in the Construction, Copying, and Measurement of Maps and Plans. II. Instruments used for the purposes of Accurate Measurement, and for Arithmetical Computations. By JF HEATHER, MA, late of the Royal Military Academy, "Woolwich, Author of '* Descriptive Geometry,
Strona 501 - The standard text-book for all engineers regarding skew arches is Mr. Buck's treatise, and it would be impossible to consult a better.
Strona 511 - A complete encyclopaedia of the materia tinctoria. The information given respecting each article is full and precise, and the methods of determining the value of articles such as these, so liable to sophistication, are given with clearness, and are practical as well as valuable."— Chemist and Druggist.
Strona 496 - Levelling. A TREATISE on the PRINCIPLES and PRACTICE of LEVELLING ; showing its Application to Purposes of Railway and Civil Engineering, in the Construction of Roads ; with Mr. TELFORD'S Rules for the same. By FREDERICK W. SIMMS, FGS, M. Inst. CE Sixth Edition, very carefully revised, with the addition of Mr.
Strona 517 - Alphabets. A PRIMER OF THE ART OF ILLUMINATION ; for the use of Beginners : with a Rudimentary Treatise on the Art, Practical Directions for its Exercise, and numerous Examples taken from Illuminated MSS., printed in Gold and Colours. By F. DELAMOTTE. Small 410, price gs.
Strona 489 - Inst. CE, and M. Inst. ME Author of "Cast and Wrought Iron Bridge Construction,
Strona 486 - Words, a Collection of suitable Phrases, and Easy Familiar Dialogues, is. 6d. GERMAN. 39. German Grammar. Adapted for English Students, from Heyse's Theoretical and Practical Grammar, by Dr. GL STRAUSS, is. 40. German Reader : A Series of Extracts, carefully culled from the most approved Authors of Germany ; with Notes, Philological and Explanatory.
Strona 512 - GALVANISM, Rudimentary Treatise on, and the General Principles of Animal and Voltaic Electricity. By Sir W. SNOW HARRIS. New Edition, with considerable Additions by ROBERT SABINE, CE, FSA is. 6d. 8. MAGNETISM; being a concise Exposition of the General Principles of Magnetical Science, and the Purposes to which it has been applied. By Sir W. SNOW HARRIS. New Edition, revised and enlarged by HM NOAD, Ph.D., Vice-President of the Chemical Society, Author of "A Manual of Electricity,
Strona 508 - VALUING ARTIFICERS' WORKS ; containing Directions for taking Dimensions, Abstracting the same, and bringing the Quantities into Bill, with Tables of Constants, and copious Memoranda for the Valuation of Labour and Materials in the respective Trades of Bricklayer and Slater, Carpenter and Joiner, Painter and Glazier, Paperhanger, &c.