What is the actual definition of a refractive index?
What is refraction index?
How refraction index depend on wavelength? How does refractive index change with wavelength? What is the refractive index of plastic? What are some examples of light refraction in daily life? What is difference between diffraction, refraction and reflection of light? What is Snell's Law of refraction? Refraction of light is an example of which property of photons? What is a diffraction grating? How can the refractive index of plastic be determined? What is the difference between interference and diffraction? How does sugar or salt affect the refractive index of a water solution? What is the Fresnel diffraction? Difference between interference and diffraction? A monochromatic light changes its wavelength after refraction, so does its colour changes after refraction? What is the n Fresnel diffraction? What is the difference between scattering and diffraction? What's the difference between scattering and diffraction? Is there any metamaterial that reflects light coming at a specific angle (e.g. Brewster angle) while being transparent in the other angles? If light is a wave, what is the medium that is "waving"? How are refractors and reflectors alike? What is used the measurement of wavelengths? How are reflectors and refractors alike? If light is a wave, then what is the medium? What is optics and its field? Optics: What are the differences among reflection of light, scattering of light, and diffraction of light? What is the refractive index of h2s gas in mid-infrared range? Why do the nodal, and principal points of a coaxial optical system coincide when the refractive indices on both sides of the system are equal? What is scattering of light? When light Ray in refraction falls normal to the surface, then why doesn't it deviate (I hope deviation is not related to angle of incidence)? What makes light reflect from any surface?