Quadrature: Difference between revisions

Revision as of 15:55, 20 February 2012

quadrature

In astronomy, the arrangement of the earth, sun, and another planet or the moon in which the angle subtended at the earth between the sun and the third body, in the plane of the ecliptic, is 90°.

The first and third quarters of the moon are positions of quadrature.
See also conjunction, opposition.
In radar systems, an orthogonal relationship between two coherent signals in which the phase of one signal is offset by 90° from the phase of the other. Two signals in quadrature may be regarded as a single complex signal.

INDEX
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
0
1
2
3
4
5
6
7
8
9

@@ Line 9: / Line 9: @@
    </div>
-#<div class="definition"><div class="short_definition"> In astronomy, the arrangement of the earth, sun, and another planet or the moon  in which the angle subtended at the earth between the sun and the third body, in the [[plane of  the ecliptic]], is 90&deg;.</div><br/> <div class="paragraph">The first and third quarters of the moon are positions of quadrature. <br/>''See also'' [[conjunction]],  [[opposition]].</div><br/> </div>
+#<div class="definition"><div class="short_definition"> In astronomy, the arrangement of the earth, sun, and another planet or the moon  in which the angle subtended at the earth between the sun and the third body, in the [[plane of  the ecliptic]], is 90&#x000b0;.</div><br/> <div class="paragraph">The first and third quarters of the moon are positions of quadrature. <br/>''See also'' [[conjunction]],  [[opposition]].</div><br/> </div>
-#<div class="definition"><div class="short_definition"> In [[radar]] systems, an [[orthogonal]] relationship between two coherent signals in which the  [[phase]] of one [[signal]] is offset by 90&deg; from the phase of the other. Two signals in quadrature may  be regarded as a single [[complex signal]].</div><br/> </div>
+#<div class="definition"><div class="short_definition"> In [[radar]] systems, an [[orthogonal]] relationship between two coherent signals in which the  [[phase]] of one [[signal]] is offset by 90&#x000b0; from the phase of the other. Two signals in quadrature may  be regarded as a single [[complex signal]].</div><br/> </div>
 </div>