Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art for ...1862 |
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Pagina 47
... depth of dilu- ted acid ( from a quarter to half an inch ) , in order to produce equality in the biting , it is needed to form a wall of wax round the margin of the work . The best material for this is beeswax with a small part of ...
... depth of dilu- ted acid ( from a quarter to half an inch ) , in order to produce equality in the biting , it is needed to form a wall of wax round the margin of the work . The best material for this is beeswax with a small part of ...
Pagina 48
... depth should be covered with the varnish , in the same manner as the blem- ishes to which we have referred . This operation may be performed any number of times , each time washing and drying the plate ; this must be also done when the ...
... depth should be covered with the varnish , in the same manner as the blem- ishes to which we have referred . This operation may be performed any number of times , each time washing and drying the plate ; this must be also done when the ...
Pagina 49
... is followed as that used in ordinary mezzotinto engraving . If the texture or depth of tint produced by the fibre of the paper 5 MECHANICS AND USEFUL ARTS . 49 The metal plates which may be most conveniently impressed by ...
... is followed as that used in ordinary mezzotinto engraving . If the texture or depth of tint produced by the fibre of the paper 5 MECHANICS AND USEFUL ARTS . 49 The metal plates which may be most conveniently impressed by ...
Pagina 73
... depth is formed , into which the corresponding projections formed on the side of another plate will fit with the most perfect ac- curacy , the plates all being made to dovetail on each of the four sides . " THE ERICSSON BATTERY . At the ...
... depth is formed , into which the corresponding projections formed on the side of another plate will fit with the most perfect ac- curacy , the plates all being made to dovetail on each of the four sides . " THE ERICSSON BATTERY . At the ...
Pagina 83
... depth of an inch and a half . These screws were nearly all broken by the shots . The 3 - inch plates were fastened to the target by 3 - inch bolts eighteen inches apart . These bolts were the first things to yield in this target . It ...
... depth of an inch and a half . These screws were nearly all broken by the shots . The 3 - inch plates were fastened to the target by 3 - inch bolts eighteen inches apart . These bolts were the first things to yield in this target . It ...
Overige edities - Alles bekijken
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art ... Volledige weergave - 1859 |
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art ... Volledige weergave - 1852 |
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art ... Volledige weergave - 1858 |
Veelvoorkomende woorden en zinsdelen
action alkali American ammonia animal apparatus appears atmosphere bitumen body butyric acid carbonic acid chemical cloth coal colloid color comet condition containing crystalline deposits depth Diluvian discovery earth effect electricity engines existence experiments fact feet gases geological glass gutta percha heat hundred hydrogen inches increase iron known larvæ less light lignite liquid magnetic manufacture mass matter ment metal meteors miles mineral nature nitric acid nitrogen North observed obtained ordinary organic oxide oxygen ozone paper pass phenomena phosphoric acid phosphorus photographic plants plate portion pounds present pressure produced Prof Professor quantity rays recent remarkable rocks shells shot side silica Silurian soil solar solution species specimens spectrum steel strata substances sulphur sulphuric acid surface temperature thickness tion tube vapor vegetable vessel weight wire wrought iron zinc
Populaire passages
Pagina 390 - CYCLOPEDIA OF ENGLISH LITERATURE. A Selection of the choicest productions of English Authors, from the earliest to the present time. Connected by a Critical and Biographical History. Forming two large imperial octavo volumes of 700 pages each, double-column letter press ; with upwards of three hundred elegant Illustrations.
Pagina ix - I first entered this city, the whole of the machinery was executed by hand. There were neither planing, slotting, nor shaping machines, and, with the exception of very imperfect lathes and a few drills, the preparatory operations of construction were effected entirely by the hands of the workmen.
Pagina 401 - ANALYTICAL CONCORDANCE TO THE HOLY SCRIPTURES ; or, the Bible presented under Distinct and Classified Heads or Topics. By JOHN EADIE, DD, LL D., Author of " Biblical Cyclopaedia," " Ecclesiastical Cyclopaedia," " Dictionary of the Bible,
Pagina 387 - Book of Facts in Science and Art, exhibiting the most important Discoveries and Improvements in Mechanics, Useful Arts, Natural Philosophy, Chemistry, Astronomy, Meteorology, Zoology, Botany, Mineralogy, Geology, Geography, Antiquities, etc.
Pagina 140 - It is also impossible to conceive either the beginning or the continuance of life without a creating and overruling power. The author's object was to lay before the Section an application of these general views to the discovery of probable limits to the periods of time, past and future, during which the sun can bo reckoned on as a source of heat and light.
Pagina ix - THE BOYDEN PREMIUM URIAH A. BOYDEN, ESQ., of Boston, Mass., has deposited with THE FRANKLIN INSTITUTE the sum of one thousand dollars, to be awarded as a premium to "Any resident of North America who shall determine by experiment whether all rays of light,* and other physical rays, are or are not transmitted with the same velocity.
Pagina 399 - GOTTHOLD'S EMBLEMS ; or, Invisible things understood by things that are made. BY CHRISTIAN SCRIVER, Minister of Magdeburg in 1671. Translated from the twenty-eighth German edition, by the Rev. ROBERT MHNZIES.
Pagina 179 - The colloidal is, in fact, a dynamical state of matter; the crystalloidal being the statical condition. The colloid possesses Energia. It may be looked upon as the probable primary source of the force appearing in the phenomena of vitality.
Pagina 397 - Perhaps no work has contributed so much as this to excite a fondness for the study of Natural Philosophy in youthful minds. The familiar comparisons, with which it abounds, awaken interest, and rivet the attention of the pupil.
Pagina 389 - THE LANDING AT CAPE ANNE; or, THE CHARTER OF THE FIRST PERMANENT COLONY ON THE TERRITORY OF THE MASSACHUSETTS COMPANY. Now discovered, and first published from the ORIGINAL MANUSCRIPT, with an inquiry into its authority, and a HISTORY OF THE COLONY, 1624-1628, Roger Conant, Governor. By J. WINGATE THORNTON. 8vo, cloth 2.50. Of " A rare contribution to the early history of New England.