What does the refractive index depend on?
106022
Why does optical media have different refractive indices?
69119
Is the size of the entrance pupil the same as the size of the effective aperture?
94271
What is the reference plane used when the minimum focus distance is measured?
34665
What image-quality characteristics make a lens good or bad?
341
How is light affected by gravity?
7618
What is the speed of light relative to?
148218
How precise must the energies match for absorption of photons?
60690
Optical microscope magnification limits?
138159
Wavelength and resolution
62822
How can lens cause consistent front or back focus?
106917
Do individual rays of light lose energy via the inverse square law?
107782
Does light reflect if incident at exactly the critical angle?
29080
How do extension tubes affect focusing distance?
105343
Interference at the focus of a convex lens or a concave mirror
10025
Why does wavelength change as light enters a different medium?
97032
Does light accelerate or slow down during reflection?
85774
Looking for the actual reason of refraction explained precisely without analogies