Methods of Using the Microscope, Camera-Lucida And Solar Projector for Purposes of Examination And the Production of Illustrations
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In our eReader you can find the full English version of the book. Read Methods of Using the Microscope, Camera-Lucida And Solar Projector for Purposes of Examination And the Production of Illustrations Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Methods of Using the Microscope, Camera-Lucida And Solar Projector for Purposes of Examination And the Production of Illustrations
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It is of the ordinary, pattern consist- ing of an adjustible mirror capable of throwing the parallel rays of sunlight through a large condensing lens. The cone of hght produced in this manner is passed through the negative or preparation and the light is brought to a focus on the screen by means of an objective. This objective may be a simple cheap meniscus, or may be a photographic lens, or a microscope objective. All these forms are in use in the illustration- room. It is more necessary to gi...ve the details of the screen up- on which the projection is received and upon the surface of which the artist produces his drawing. This screen is borne between two uprights about seven feet high, set on four castors placed sufficiently far apart to giye the apparatus a firm support.
After the apparatus has been rolled into position, four screw-legs are screwed downward and the apparatus is thus raised off its castors and placed on four legs, and is then sufficiently firm to resist all the pressure that is brought to bear upon it.
What to read after Methods of Using the Microscope, Camera-Lucida And Solar Projector for Purposes of Examination And the Production of Illustrations?
You can find similar books in the "Read Also" column, or choose other free books by Cobb, Nathan Augustus, 1859-1932 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is of the ordinary, pattern consist- ing of an adjustible mirror capable of throwing the parallel rays of sunlight through a large condensing lens. The cone of hght produced in this manner is passed through the negative or preparation and the light is brought to a focus on the screen by means of an objective. This objective may be a simple cheap meniscus, or may be a photographic lens, or a microscope objective. All these forms are in use in the illustration- room. It is more necessary to gi...ve the details of the screen up- on which the projection is received and upon the surface of which the artist produces his drawing. This screen is borne between two uprights about seven feet high, set on four castors placed sufficiently far apart to giye the apparatus a firm support.
After the apparatus has been rolled into position, four screw-legs are screwed downward and the apparatus is thus raised off its castors and placed on four legs, and is then sufficiently firm to resist all the pressure that is brought to bear upon it.
What to read after Methods of Using the Microscope, Camera-Lucida And Solar Projector for Purposes of Examination And the Production of Illustrations?
You can find similar books in the "Read Also" column, or choose other free books by Cobb, Nathan Augustus, 1859-1932 to read onlineMoreLess
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