 By raising or lowering the prism in its stand (Fig. 696), the image of the object to be sketched may be made to coincide with the plane of the paper. The prism is mounted in such a way that it can be rotated either about a horizontal or a vertical axis;...  Elementary Treatise on Natural Philosophy - Page 990by Augustin Privat-Deschanel - 1882Full view - About this book
 | Augustin Privat-Deschanel - Physics - 1873 - 298 pages
...at a distance of about a foot, a concave lens, with a focal length of something less than a foot is placed close in front of the prism, in drawing distant...By raising or lowering the prism in its stand (Fig. 657), the image of the object to be sketched may be made to coincide with the plane of the paper. The... | |
 | Augustin Privat-Deschanel - Physics - 1881 - 318 pages
...at a distance of about a foot, a concave lens, with a focal length of something less than a foot is placed close in front of the prism, in drawing distant...By raising or lowering the prism in its stand (Fig. 657), the image of the object to be sketched may be made to coincide with the plane of the paper. The... | |
 | Augustin Privat-Deschanel - Physics - 1891 - 320 pages
...proposed by Wollaston, and represented in Figs. G95, 696, is Fig. 095.— Section of Prism. Fig. 600.— Camera Lucida. one of the commonest. The essential...paper. The prism is mounted in such a way that it can be rotated either about a horizontal or a vertical axis; and its top is usually covered with a movable... | |
 | Augustin Privat-Deschanel - 1893 - 316 pages
...with four angles, one of which is 90°, the opposite one 135°, and the other two each 67° 30'. 0ne of the two faces which contain the right angle is...paper. The prism is mounted in such a way that it can be rotated either about a horizontal or a vertical axis; and its top is usually covered with a movable... | |
 | 1901 - 530 pages
...at a distance of about a foot, a concave lens, with a focal length of something less than a foot, is placed close in front of the prism in drawing distant...objects. By raising or lowering the prism in its stand, the image of the object to be sketched may be made to coincide with the plane of the paper. The prism... | |
 | Frederick Converse Beach, George Edwin Rines - Encyclopedias and dictionaries - 1912 - 902 pages
...at a distance of about a foot, a concave lens, with a focal length of something less than a foot, is placed close in front of the prism in drawing distant...objects. By raising or lowering the prism in its stand (Flo. 2), the image of the object to be sketched may be made ' to coincide with the plane of the paper.... | |
 | Charles Morris - Encyclopedias and dictionaries - 1917 - 544 pages
...objects Camera Lucida. foot, a concave lens, with a focal length of something less than a foot, is placed close in front of the prism in drawing distant...objects. By raising or lowering the prism in its stand, the image of the object to be sketched may be made to coincide with the plane of the paper. The prism... | |
 | Encyclopedias and dictionaries - 1918 - 832 pages
...at a distance of about a foot, a concave lens, with a focal length of something less than a foot, is placed close in front of the prism in drawing distant...objects. By raising or lowering the prism in its stand (Fio. 2), the image of the object to be sketched may be made to coincide with the plane of the paper.... | |
 | Encyclopedias and dictionaries - 1918 - 844 pages
...of about a foot, a concave lens, with a focal length of something less than a foot, is placed cjose in front of the prism in drawing distant objects. By raising or lowering the prism in its stand (Fie. 2), the image of the object to be sketched may be made to coincide with the plane of the paper.... | |
 | Charles Morris - Encyclopedias and dictionaries - 1921 - 506 pages
...about а Camera Lucida foot, a concave lens, with a focal length of something less than a foot, is placed close in front of the prism in drawing distant...objects. By raising or lowering the prism in its stand, the image of the object to be sketched may be made to coincide with the plane of the paper. The prism... | |
| |
