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Spherical lenses have a single power in all meridians of the lens, such as + 1. 00 D, or − 2. 50 D.
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Spherical and lenses
* " http :// doflick. com / ViewVideo. aspx? vId = 284 " A clear video explanation of Spherical aberration and hyperbolic lenses
Spherical and have
Spherical errors occur when errors have both uniform variance ( homoscedasticity ) and are uncorrelated with each other.
Spherical objects with this surface area have a radius or diameter in the range 89, 000 km to 564, 000 km.
Spherical triangle groups can be identified with the symmetry groups of regular polyhedra in the three-dimensional Euclidean space: Δ ( 2, 3, 3 ) corresponds to the tetrahedron, Δ ( 2, 3, 4 ) to both the cube and the octahedron ( which have the same symmetry group ), Δ ( 2, 3, 5 ) to both the dodecahedron and the icosahedron.
Spherical and single
* Spherical concave and convex mirrors do not focus parallel rays to a single point due to spherical aberration.
Spherical and power
Spherical equivalent refraction is normally used to determine soft lens power and spherical glasses power.
* Spherical errors occur when the optical power of the eye is either too large or too small to focus light on the retina.
Spherical and all
Spherical geometry obeys two of Euclid's postulates: the second postulate (" to produce a finite straight line continuously in a straight line ") and the fourth postulate (" that all right angles are equal to one another ").
When it was all completed ( in + 725 ) it was called the ' Water-Driven Spherical Bird's-Eye-View Map of the Heavens ( Shui Yun Hun Thien Fu Shih Thu ) or ' Celestial Sphere Model Water-Engine ' and was set up in front of the Wu Chheng Hall ( of the Palace ) to be seen by the multitude of officials.
Spherical and lens
** Spherical aberration, which occurs when light rays strike a lens or mirror near its edge
Spherical aberration is an optical effect observed in an optical device ( lens, mirror, etc.
Spherical aberration occurs due to the increased refraction of light rays that occurs when rays strike a lens, or a reflection of light rays that occurs when rays strike a mirror near its edge in comparison with those that strike nearer the center.
Spherical and such
Spherical mechanisms are constructed by connecting links with hinged joints such that the axes of each hinge passes through the same point.
Spherical trigonometry was studied by early Greek mathematicians such as Menelaus of Alexandria, who wrote a book on spherical trigonometry called Sphaerica and developed Menelaus ' theorem.
The complete list of such manifolds is given in the article on Spherical 3-manifolds.
* Quadrilateralized Spherical Cube, a mapping scheme for data collected on a spherical surface, such as a planet
Spherical triangles were studied by early Greek mathematicians such as Menelaus of Alexandria, who wrote a book on spherical triangles called Sphaerica and developed Menelaus ' theorem.
Spherical coordinates are one of the most used curvilinear coordinate systems in such fields as Earth sciences, cartography, and physics ( in particular quantum mechanics, relativity ), engineering, etc.
However, he also published books on mathematical astronomy such as A Treatise on Spherical Astronomy.
Spherical tokamaks are not limited by the same instabilities as tokamaks and as such the area is receiving considerable experimental attention.
Spherical and 1
Howard, 2005, Spherical Boulders in North-Central Arkansas PDF version, 2. 8 MB Arkansas Geological Commission Miscellaneous Publication n. 22, pp. 1 – 23.
Figure 1: Spherical surface in k-space for electrons in three dimensions.
* Spherical multipole moments of the 1 / R potential, and
Spherical and .
Spherical concave backing surfaces support the diaphragm when excessive pressures are applied and prevent the stresses within the diaphragm from exceeding the elastic limit.
* Simon Newcomb, A Compendium of Spherical Astronomy ( Macmillan, 1906 – republished by Dover, 1960 ), 160-172.
Spherical fullerenes are also called buckyballs, and they resemble the balls used in soccer.
* Thin Spherical Lenses on Project PHYSNET.
** M. C. Escher used special shapes of mirrors in order to achieve a much more complete view of his surroundings than by direct observation in Hand with Reflecting Sphere ( also known as Self-Portrait in Spherical Mirror ).
Select this link for an animation of a Spherical deployable mechanism.
Spherical geometry is similar to elliptical geometry.
Spherical coordinates ( r, θ, φ ) as often used in mathematics: radial distance r, azimuthal angle θ, and polar angle φ.
Spherical waves coming from a point source.
Spherical coordinates, projected on the celestial sphere, are analogous to the geographic coordinate system used on the surface of the Earth.
* Planned completion of the Five hundred meter Aperture Spherical Telescope, in China.
Spherical waves are waves whose amplitude depends only upon the radial distance r from a central point source.
* Spherical sector, portion of a sphere enclosed by a cone of radii from the center of the sphere.
* SDEC Spherical Discrete Element Code.
* Chute Maven ( Hustrulid Technologies Inc .) Spherical Discrete Element Modeling in 3 Dimensions.
Spherical particles undergo less particle rearrangement than irregular particles.
Spherical stone shot were chosen because of cheapness ; forged iron, bronze and lead balls were tried, but the expense prevented their general adoption.
* Spherical coordinate system represents a point in three space by the distance from the origin and two angles measured from two reference lines which intersect the origin.
* Robin Michael Green, Spherical Astronomy.
: See also Spherical law of cosines and Half-side formula.
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