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sphere
Image: Wikimedia Commons

sphere

Round, rotationally symmetric shape of the 2D surface of a ball in 3D space

EntityUCUM constantQ12507

Also known as 2-sphere · orb

Instance of
Subclass of

Overview

All data

79 statements · 16% with external sources · numbers in brackets are citations

Has characteristic
Different from
Defining formula
  • x^2+y^2+z^2=r^2
  • \left\{ \vec{x} : ||\vec{x} - \vec{x_0}||^2 = r^2 \right\}
Euler characteristic
  • 2
Followed by
Follows
Contains
Said to be the same as

On other databases

47 identifiers linking sphere across the web's reference databases