Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art, for [1850]-71, Exhibiting the Most Important Discoveries and Improvements in Mechanics, Useful Arts, Natural Philosophy, Chemistry, Astronomy, Geology, Biology, Botany, Mineralogy, Meteorology, Geography, Antiquities, Etc., Together with Notes on the Progress of Science ... a List of Recent Scientific Publications; Obituaries of Eminent Scientific Men, Etc. ...Gould and Lincoln, 1865 |
Vanuit het boek
Resultaten 1-5 van 54
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 réferred . 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 réferred . 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
... To pro- duce a proper effect of light and shadow , the same method is followed as that used in ordinary mezzotinto engraving . If the texture or depth of tint produced by the fibre of the paper MECHANICS AND USEFUL ARTS . 49.
... To pro- duce a proper effect of light and shadow , the same method is followed as that used in ordinary mezzotinto engraving . If the texture or depth of tint produced by the fibre of the paper MECHANICS AND USEFUL ARTS . 49.
Pagina 50
... depth of tint produced by the fibre of the paper is desired to be in- creased in those impressions on metal which are treated in the man- ner of mezzotinto engravings , the paper is coated , before commencing the drawing or design ...
... depth of tint produced by the fibre of the paper is desired to be in- creased in those impressions on metal which are treated in the man- ner of mezzotinto engravings , the paper is coated , before commencing the drawing or design ...
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 ...
Overige edities - Alles bekijken
Annual of Scientific Discovery: Or, Year-Book of Facts in Science and Art ... Geen voorbeeld beschikbaar - 2020 |
Annual of Scientific Discovery: Or, Year-Book of Facts in Science and Art ... David Ames Wells,William Ripley Nichols,George Bliss Geen voorbeeld beschikbaar - 2016 |
Annual of Scientific Discovery: Or, Year-Book of Facts in Science and Art ... David Ames Wells,William Ripley Nichols,George Bliss Geen voorbeeld beschikbaar - 2016 |
Veelvoorkomende woorden en zinsdelen
action ammonia animal apparatus appears atmosphere bitumen body butyric acid carbonic acid chemical cloth coal color combustion comet contains crystalline deposits depth Diluvian discovery earth effect electricity engines existence experiments fact feet formation gases geological glass gutta percha heat HUGH MILLER hundred hydrogen inches increase influence iron known light lignite liquid magnetic manufacture mass matter ment metal meteors miles MILLER'S mineral nature nitric acid nitrogen North observed obtained ordinary organic oxide oxygen ozone paper passed phenomena phosphoric acid plants plate portion pounds present pressure produced Prof Professor quantity R. I. Murchison recent remarkable rocks shells shot side silica Silurian soil solar solution species specimens spectrum steam steel strata substances sulphuric sulphuric acid surface temperature thickness tion tube vapor vegetable vessel weight wire wrought iron
Populaire passages
Pagina 413 - 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 413 - The Camel : His Organization, Habits and Uses, considered with reference to his introduction into the United States.
Pagina v - 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 146 - The result of this would be a state of universal rest and death, if the universe were finite and left to obey existing laws. But as no limit is known to the extent of matter, science points rather to an endless progress through an endless space of action, involving the transformation of potential energy through palpable motion into heat, than to a single finite mechanism, running down like a clock and stopping forever.
Pagina viii - 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 62 - ... the glasses are taken off and wiped every day, and before they are put on again, the match is applied to the lip of the burner, and the stopcock cautiously opened, so that no more gas escapes than is sufficient to make a ring of blue flame, the glasses being then put on quite straight, the stopcocks are gently turned, until the flames stand at three inches high. When this is done, few chimney-glasses will be broken, and the ceilings will not be blackened for years.
Pagina 197 - Energia. It may be looked upon as the probable primary source of the force appearing in the phenomena of vitality. To the gradual manner in which colloidal changes take place (for they always demand time as an element), may the...
Pagina 411 - POLITICAL ECONOMY ABRIDGED, and adapted to the use of Schools and Academies, by the Author.
Pagina 412 - HEADSHIP OF CHRIST, and the Rights of the Christian People, a Collection of Personal Portraitures, Historical and Descriptive Sketches and Essays, with the Author's celebrated Letter to Lord Brougham.
Pagina 197 - Another eminently characteristic quality of colloids, is their mutability. Their existence is a continued metastasis. A colloid may be compared in this respect to water while existing liquid at a temperature below its usual freezing point, or to a supersaturated saline solution.