A Collection of Problems and Examples Adapted to the "Elementary Course of Mathematics.": With an Appendix Containing the Questions Proposed During the First Three Days of the Senate-House Examinations in the Years 1848, 1849, 1850, and 1851J. Deighton, 1851 - 173 páginas |
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Página 103
... focal length of a lens through which it must be viewed , that its apparent depth may be 10 feet ? 2. If an object is ... focal length of the compound lens . 7. Four lenses having a common axis are placed at in- tervals 1 , 5 , 10 inches ...
... focal length of a lens through which it must be viewed , that its apparent depth may be 10 feet ? 2. If an object is ... focal length of the compound lens . 7. Four lenses having a common axis are placed at in- tervals 1 , 5 , 10 inches ...
Página 104
... lens are 1 and 6 inches , and the refracting index 1.6 ; find the focal length . 10. The first surface of a lens is concave and of given radius ; determine the form of the second in order that the focal length may be the same as that of ...
... lens are 1 and 6 inches , and the refracting index 1.6 ; find the focal length . 10. The first surface of a lens is concave and of given radius ; determine the form of the second in order that the focal length may be the same as that of ...
Página 105
... distance of 4 inches from a concave lens of 2 inches focal length ; is the image erect or inverted ? 7. Two convex lenses , of 3 inches and 5 inches focal length respectively , are placed on the same axis at a dis- tance of 4 inches ...
... distance of 4 inches from a concave lens of 2 inches focal length ; is the image erect or inverted ? 7. Two convex lenses , of 3 inches and 5 inches focal length respectively , are placed on the same axis at a dis- tance of 4 inches ...
Página 106
... distance than 3 feet . 4. The focal lengths of the object - glass and eye - glass of a simple astronomical telescope are 27 inches and inch respectively . Find the focal length of a convex lens to be placed between them at a distance of ...
... distance than 3 feet . 4. The focal lengths of the object - glass and eye - glass of a simple astronomical telescope are 27 inches and inch respectively . Find the focal length of a convex lens to be placed between them at a distance of ...
Página 107
... focal lengths of the ob- ject - glass and eye - glass . 6. An astronomical telescope consists of three convex lenses , two of which form the eye - piece ; prove that if the focal length of these two be 3a and a respectively , and the ...
... focal lengths of the ob- ject - glass and eye - glass . 6. An astronomical telescope consists of three convex lenses , two of which form the eye - piece ; prove that if the focal length of these two be 3a and a respectively , and the ...
Otras ediciones - Ver todas
A Collection of Problems and Examples, Adapted to the Elementary Course of ... Harvey Goodwin Sin vista previa disponible - 2019 |
A Collection of Problems and Examples Adapted to the 'Elementary Course of ... Harvey. Goodwin Sin vista previa disponible - 2015 |
A Collection of Problems and Examples, Adapted to the 'Elementary Course of ... Harvey Goodwin Sin vista previa disponible - 2010 |
Términos y frases comunes
angular points arithmetical arithmetical mean arithmetical series axis base bisects centre of gravity chord circle concave convex lens cos² cosec curve cylinder Describe determine diameter direction distance Divide drawn elastic balls ellipse equal equation equilibrium feet find the height Find the number find the position Find the velocity fluid focal length force geometrical focus geometrical progression geometrical series given point given velocity given weight horizontal plane hyperbola immersed inches incident inclined plane inscribed latus rectum luminous point mirror motion moving Multiply observed parabola parallel parallelogram pencil of rays perpendicular placed pressure proportional prove pullies quantities radii radius ratio reflexion refracted respectively right angle shew sides sin² specific gravity sphere spherical square St John's College straight line string passing Subtract surface tangent tower triangle vertex
Pasajes populares
Página 111 - If two triangles have two sides of the one equal to two sides of the...
Página 128 - To divide a given straight line into two parts, so that the rectangle contained by the whole and one of the parts, shall be equal to the square of the other part.
Página 111 - If a straight line be divided into two equal parts, and also into two unequal parts, the rectangle contained by the unequal parts, together with the square on the line between the points of section, is equal to the square on half the line.
Página 112 - EQUAL straight lines in a circle are equally distant from the centre ; and those which are equally distant from the centre, are equal to one another.
Página 144 - ... a circle. The angle in a semicircle is a right angle: the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Página 160 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Página 112 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Página 160 - In any right-angled triangle, the square which is described upon the side subtending the right angle, is equal to the squares described upon the sides which contain the right angle.