Definitions
There is 1 meaning of the phrase
Principal Axis.
Principal Axis - as a noun
A line that passes through the center of curvature of a lens so that light is neither reflected nor refracted
Example: "In a normal eye the optic axis is the direction in which objects are seen most distinctly"
Synonyms (Exact Relations)
optic axisExample Sentences
"The beam of light passes through the principal axis of the lens."
"The principal axis is the line passing through the center of a sphere or other symmetrical object."
"The principal axis of a parabolic mirror is a line passing through the vertex and focal point."
"In anatomy, the principal axis refers to the main vertical axis of the body."
"The principal axis of a coordinate system is the line along which one variable changes while the others remain constant."
