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 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 objects with this surface area have a radius or diameter in the range 89, 000 km to 564, 000 km.

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 astronomy is the branch of astronomy that is concerned with where celestial objects are located and how they move on the celestial sphere.

* The shape and structure of Earth ( roughly spherical, see also Spherical Earth )

* Thin Spherical Lenses on Project PHYSNET.

Spherical coordinates, projected on the celestial sphere, are analogous to the geographic coordinate system used on the surface of the Earth.

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.

Spherical aberration of collimated light incident on a concave spherical mirror.

The complete list of such manifolds is given in the article on Spherical 3-manifolds.

Spherical codes are higher-dimensional analogues of Tammes problem, which arose as an attempt to explain the distribution of pores on pollen grains.

He was the Principal Investigator ( PI ) on the Spacelab 3 mission NASA Drop Dynamics ( DDM ) experiments, PI on the NASA SPAR Flight Experiment # 77-18 " Dynamics of Liquid Bubble ," PI on the NASA SPAR Flight Experiment # 76-20 " Containerless Processing Technology ," and PI on the Department of Energy Experiment " Spherical Shell Technology.

* An Elementary Treatise on Plane and Spherical Trigonometry, Boston: James Munroe and Company.

* Quadrilateralized Spherical Cube, a mapping scheme for data collected on a spherical surface, such as a planet

* A Treatise on Spherical Catoptrics, published in the Phil.

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 errors occur when the optical power of the eye is either too large or too small to focus light on the retina.

However, he also published books on mathematical astronomy such as A Treatise on Spherical Astronomy.

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.

* William M. Smart, edited by Robin M. Green, Textbook on Spherical Astronomy, 1977, Cambridge University Press, ISBN 0-521-29180-1.