You are looking at 1-2 of 2 entries  for:

  • All: perpendicular bisector x
clear all

View:

Overview

perpendicular bisector

The perpendicular bisector of a line segment AB is the straight line perpendicular to AB through the midpoint of AB.

Wigner–Seitz cell

Wigner–Seitz cell   Quick reference

A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
115 words
Illustration(s):
1

...Wigner–Seitz cell A unit cell of a crystal lattice that is constructed by starting from some lattice site and drawing lines to all the neighbouring lattice sites. The region enclosed by the perpendicular bisecting planes of these lines is the Wigner–Seitz cell of the crystal. The concept of the Wigner–Seitz cell was put forward in 1933 by Eugene Wigner and Frederick Seitz ( 1911–2008 ). The same construction in reciprocal space gives the first Brillouin zone , a concept that is very useful in the theory of energy bands . Polyhedra constructed...

Schoenflies system

Schoenflies system   Quick reference

A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
297 words

...rotation axis, have a mirror plane perpendicular to the axis. S n groups have an n -fold rotation–reflection axis. D n groups have an n -fold rotation axis and a two-fold axis perpendicular to the n -fold axis (and two-fold axes associated with the existence of the n -fold axis). D nh groups have all the symmetry operations of D n and also a mirror plane perpendicular to the n -fold axis. D nd groups contain all the symmetry operations of D n and also mirror planes that contain the n -fold axis and bisect the angles between the two-fold axes....

View: