Good day, Unfortunately, I don't really understand total internal reflection yet. I'm really looking forward to your detailed and easy-to-understand explanations. Total internal reflection can occur at the transition from an optically denser to an optically thinner medium if the angle of incidence is so large that the angle of refraction would be over 90°…
Hello everyone, I'm at my wit's end and don't understand where I made a mistake. I'm getting an implausible result for the refractive index N2: The refractive index of water can't be 0.58! So I must have made a mistake with the angle, but I just can't figure out what the error is. a1 must…
Hello everyone, I have a question about geometric optics. I would like to know how parallel light rays behave when they first pass through a converging lens and then through a diverging lens, or vice versa. I know (from our practical experiment) that if you let the light pass through a suitable object, you can…
Hello! Can someone explain to me what focal length is? I don't understand it, nor do I understand image size, object distance, and image distance. Thanks in advance.
I am taking here a sketch of my last question: Light of the imaginary intensity 1 is viewed through two filters arranged one behind the other, each reflecting 50%. It turns out that in the extreme case of pure reflection, with continuous irradiation, the sum of the intensities of the infinite, converging geometric series I_filtered…
I had a pair of sunglasses custom-made. These glasses contain (simplified values) two filters (through reflection) for the wavelengths 400-455nm, each with an intensity reduction of 50%, arranged one behind the other (filter 1 consists of the front coating, filter 2 is the lens material itself). Now I wonder whether the protection adds up like…