Optics
3 terms
Paraxial Approximation
Optics
rad (radians)
A small-angle approximation in geometric optics assuming light rays make small angles $θ$ with the optical axis.
sin θ ≈ θ, tan θ ≈ θ, cos θ ≈ 1
Polarization
Optics
N/A
The property of transverse electromagnetic waves specifying the geometric orientation of their electric field vector oscillations in space.
E(z,t) = E0 cos(k z - ω t) i_hat
Presbyopia
Optics
Diopters (D)
The age-related loss of accommodation power in the human eye caused by reduced elasticity of the crystalline lens.
Near Point > 25 cm (increases with age)