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Spherical and objects
Spherical astronomy is the branch of astronomy that is concerned with where celestial objects are located and how they move on the celestial sphere.
Spherical astronomy or positional astronomy is the branch of astronomy that is used to determine the location of objects on the celestial sphere, as seen at a particular date, time, and location on the Earth.

Spherical and with
Spherical errors occur when errors have both uniform variance ( homoscedasticity ) and are uncorrelated with each other.
* Still Life with Spherical Mirror, lithograph ( 1934 )
* Hand with Reflecting Sphere also known as Self-Portrait in Spherical Mirror, lithograph ( 1935 )
** 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 ).
Spherical mechanisms are constructed by connecting links with hinged joints such that the axes of each hinge passes through the same point.
Spherical geometry is not elliptic geometry but shares with that geometry the property that a line has no parallels through a given point.
Early in 1942, Wallis began experimenting with skipping marbles over water tanks in his garden, leading to his April 1942 paper " Spherical Bomb — Surface Torpedo ".
Spherical harmonics were first investigated in connection with the Newtonian potential of Newton's law of universal gravitation in three dimensions.
* Cradle – Spherical bowl turned on its side, typically connected with a bowl.
Along with her test she was required to take courses showing broader knowledge as well as prepare a thesis which was entitled Algebraic Groups of Spherical Trigonometry.
Spherical buildings arise in two quite different ways in connection with the affine building X for SL < sub > n </ sub >( Q < sub > p </ sub >):
His publications include " Spherical Gravitational Waves " ( a collaboration with Peter Bergmann, former research assistant to Albert Einstein ), " Contributions to the Quantization Problem in General Relativity ", and " The Normal Modes Of A Hanging Oscillator Of Order N ".
Spherical trigonometry is a branch of spherical geometry which deals with polygons ( especially triangles ) on the sphere and the relationships between the sides and the angles.
* Wolfram's mathworld: Spherical Trigonometry a more thorough list of identities, with some derivation
Struycken is also an avid photographer with a website devoted to his Spherical Panoramas.
As an inventor, Sperling created, with Mike Simmons, the Astroscan telescope for Edmund Scientific, as well as " The Stars Above " star-finder for Spherical Concepts.
Still Life with Spherical Mirror is a lithography print by the Dutch artist M. C. Escher which was first printed in November, 1934.
es: Still Life with Spherical Mirror
Hand with Reflecting Sphere also known as Self-Portrait in Spherical Mirror is a lithograph print by Dutch artist M. C. Escher, first printed in January 1935.
* Still Life with Spherical Mirror
* Still Life with Spherical Mirror
This sculpture first appears in Escher ’ s 1934 lithograph Still Life with Spherical Mirror.
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 surface
Spherical coordinates, projected on the celestial sphere, are analogous to the geographic coordinate system used on the surface of the Earth.
Spherical geometry is the geometry of the two-dimensional surface of a sphere.
* Spherical zone, the surface area of a spherical segment
Spherical mirror distortion is used in projection systems that utilize a digital video projector and a first surface convex spherical mirror to project images onto a dome.
* Quadrilateralized Spherical Cube, a mapping scheme for data collected on a spherical surface, such as a planet
Figure 1: Spherical surface in k-space for electrons in three dimensions.
Spherical groups with a radially fibrous structure and bristled with crystals on the surface are not uncommon.

Spherical and area
Spherical tokamaks are not limited by the same instabilities as tokamaks and as such the area is receiving considerable experimental attention.

Spherical and have
Spherical lenses have a single power in all meridians of the lens, such as + 1. 00 D, or − 2. 50 D.
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 diameter
; Spherical aberration: The difference in focal length between paraxial rays and marginal rays, proportional to the square of the objective diameter.

Spherical and range
Spherical or ovoid, the aquaria range from roughly baseball-size to soccer-ball-size.

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.
* Spherical concave and convex mirrors do not focus parallel rays to a single point due to spherical aberration.
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.
* 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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