#
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
Help

Astigmatism

An aberration, or defect, in a mirror or lens that causes the image of a point to spread out into a line.

See also: Aberration.

Subjects: Optics Physics