What will happen if the refractive index of lens is less than unity?
72352
How can the refractive index be below 1 in a dielectric?
114581
Besides the 2nd law of thermodynamics, what laws of optics prevent the temperature of the focal point of lens from being hotter than the light source?
60690
Optical microscope magnification limits?
19362
Can a smaller sensor's "crop factor" be used to calculate the exact increase in depth of field?
98701
If a lens focuses all incoming light to a point, how do we get 2D images?
85837
What's the difference between real and effective aperture?
34665
What image-quality characteristics make a lens good or bad?
84291
Do the integral forms of Maxwell's Equations have limited applicability because of retardation?
36265
Why do I get blurry pictures when I take a lens attachment off?
130201
Imaginary number for extinction coefficient in complex refractive index
62822
How can lens cause consistent front or back focus?
97032
Does light accelerate or slow down during reflection?
63434
Technically, why is the out of focus area blurred more when using a bigger aperture?
96529
How can I calculate magnification ratio I get by reversing a lens?
123605
Relation between intensity of light and refractive index
106022
Why does optical media have different refractive indices?
4005
If refraction slows down light, isn't it possible to hold light still?