The E-plane and H-plane are reference planes for linearly polarized waveguides, antennas and other microwave devices. In waveguide systems, as in the electric...

A paper plane (also known as a paper airplane or paper dart in American English, or paper aeroplane in British English) is a toy aircraft, usually a glider...

the intersection of two planes in three-dimensional space is a line. The line of intersection between two planes Π 1 : n 1 ⋅ r = h 1 {\displaystyle \Pi _{1}:{\boldsymbol...

mathematics, a projective plane is a geometric structure that extends the concept of a plane. In the ordinary Euclidean plane, two lines typically intersect...

transpyloric plane, also known as Addison's plane, is an imaginary horizontal plane, located halfway between the suprasternal notch of the manubrium and the upper...

Outer Plane is one of a number of general types of planes of existence. They can also be referred to as godly planes, spiritual planes, or divine planes. The...

astral plane, also called the astral realm or the astral world, is a plane of existence postulated by classical, medieval, oriental, esoteric, and New Age...

In esoteric cosmology, a plane is conceived as a subtle state, level, or region of reality, each plane corresponding to some type, kind, or category of...

In the Unicode standard, a plane is a contiguous group of 65,536 (216) code points. There are 17 planes, identified by the numbers 0 to 16, which corresponds...

In mathematics, the complex plane is the plane formed by the complex numbers, with a Cartesian coordinate system such that the horizontal x-axis, called...