Spherical
Spherical (sfer-i-kuhl)
Spherical refers to something that is shaped like a sphere or ball. It is a term often used in various fields such as mathematics, physics, and medicine.
Etymology
The term "spherical" originates from the Latin word "sphaericus," which is derived from the Greek word "sphairikos." Both words mean "pertaining to a sphere."
In Medicine
In medicine, the term "spherical" is often used to describe the shape of certain parts of the body or cells. For example, red blood cells are often described as being "spherical" in shape.
Spherical Aberration is a common term in ophthalmology, referring to an optical problem that occurs when all incoming light rays end up focusing at different points after passing through a spherical surface.
Spherical Lens is a type of lens in glasses or contact lenses that has the same curve across its entire surface, used to correct myopia or hypermetropia.
Related Terms
- Sphere: A three-dimensional geometric shape that is perfectly round and symmetrical.
- Spheroid: An object that is almost, but not quite, perfectly spherical.
- Ellipsoid: A shape that is sphere-like but more elongated or flattened.
- Spherical Geometry: A type of geometry that deals with figures on the surface of a sphere.
External links
- Medical encyclopedia article on Spherical
- Wikipedia's article - Spherical
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