{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "## Dispersion: prism\n", "\n", "This code is the same as \n", "PrismRefraction.ipynb\n", "except that here we are going to use three colours.\n", "\n", "We can set the refractive indices for each colour separately and hence explore **dispersion**.\n", "\n", "\n", "\n", "\n", "The images we create is iconic. Newton's in his so called *experimentum crucis* studied prism refraction of sunlight adding a second \n", "prism in the red path to show that you cannot split a primary colour. However, the claim Newton made was not actually \n", "true as the red light still has a range of wavelengths which diverge after a second prism.\n", "\n", "The image is also iconic as a similar image was used as the album cover for Dark Side of the Moon by Pink Floyd in 1973.\n", "A good exercise is to see if you think there is a problem with their back cover?\n", "\n" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "Next, we explore the code that generates the images in the interactive figure above.\n", " \n", "The Jupyter Notebook is Disp.ipynb see\n", "\n", "https://github.com/opticsf2f/Opticsf2f_CodeBook\n", "\n", "