 About Rainbows  Beverly T. Lynds
A tutorial on the physical nature of the rainbow, with graphics and text references. The traditional rainbow is sunlight spread out into its spectrum of colors and diverted to the eye of the observer by water droplets. The "bow" part of the word describes
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 Ancient Mathematics  SunSITE's Vatican Exhibit; Library of Congress
Math history: math and astronomy in the ancient world. Greek Mathematics, Ptolemy's Geography, Greek Astronomy. Scholarship supported science in this world where faith and science were not yet seen as two irreconcilable cultures. Euclid (Elements, Optics);
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 Arizona Center for Mathematical Sciences (ACMS)  University of Arizona, Tucson
An interdisciplinary research group that enjoys close ties with the Departments of Physics and Optical Sciences. The main goal of ACMS research is to understand nonlinear processes in natural phenomena. Research topics include nonlinear optics, fluids,
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 Cabri en Physique  Yves Cortial
Cabri en Physique propose près de 140 figures créées avec le logiciel de géométrie dynamique Cabri Géomètre dont une centaine d'animations en version CabriJava: d'illustrations de phénomènes
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 CabriJava  JeanMarie Laugier; L'Université de Provence (AixMarseille I)
Optique, électicité, mécanique. CabriHop: Une série de constructions d'optique géométrique et physique, niveau lycée et un peu +, à visiter en premier pour les paramétrages de votre navigateur,
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 The Coffeecup Caustic  Roy Williams
You are drinking from a cylindrical cup in the sunshine. Sometimes, when the sun shines into the cup, you can see a crescent of light as the sunshine reflects from the inside of the cup onto the surface of the drink. This Java applet illustrates the optics
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 Compasswallah
Hoping to "exhume the analog geometry of ancient discoveries for a confrontation with the digital age," Compasswallah analyzes and looks at the history of astronomy, surveying, geodesy, cartography, geomagnetism, geometry, scientific instruments, analog
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 Doug's Home Page  Douglas J. Ingalls
Includes mathematical interests such as images of fractal applications of Newton's Method and Gibb's Phenomena, with related programs in FORTRAN and BASIC, a discussion of the apparent depth problem in optics, and how multiple decisions can be reduced
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 Example Problems.com  Todd Smith
This site is an opencommunity collection of math problems and full solutions for every area of math from Algebra through graduate level partial differential equations, optics, and special functions. The code used on the site's wiki is the same as TeX.
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 FroZenLight  Zoltan Palmer
Interrelating line arts, mathematics, and cryptography, this free Java application simulates experiments in classic optics. Use FroZenLight to see how beaming a light ray onto circular mirrors would produce reflection patterns ranging from the symmetric
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 Geometry Turned On: Dynamic Software in Learning, Teaching, and Research  J. King and D. Schattschneider, Editors
This book contains twentysix papers about aspects of dynamic software for geometry. The book does not contain software itself, but this site includes downloadable files for many of the papers in the book. For a discussion of what the book is about, see
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 Greek Mathematics and its Modern Heirs  SunSITE's Vatican Exhibit; Library of Congress
Classical roots of the scientific revolution. An essay on the history of Greek Math, with sample math problems. Covers Euclid's Elements and Optics, Archimedes' Works, Piero della Francesca's De quinque corporibus regularibus, and links to Ptolemy's Geography
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 In the Footsteps of Newton  Nancy Rodgers and Elizabeth Winters, Hanover College
This documentary of, and by, Hanover College students follows their quest to retrace the life of Sir Isaac Newton, begining with his early life on the farm at Woolsthorpe Manor, to his student days in Grantham and academic life at Trinity College in Cambridge
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 Learning Epipolar Geometry  Sylvain Bougnoux
A discussion of camera angles, using demonstration applets that allow the user to manipulate lines of sight and planes of vision. With two views, things become interesting: if we know m and the projection of a point M onto a camera, its corresponding
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 Light Mixer  Cary and Michael Huang
Type "c" for cyan, "m" for magenta, or "y" for yellow, then click and drag in the grey box to draw a path of pigment in that color. Toggling the switch lets you "draw" in light on a black background: "b" for blue, "r" for red, or "g" for green. Regions
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 Living Graphs  Living Graphs Inc.
Makers of ChaosLab, an interactive math package for visualizing and understanding fractal geometry and chaos theory. This PC software title covers bifurcation diagrams, the chaos game, coin tosses, diffusion limited aggregation, Levy flight, Pascal's
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 Newton, Sir Isaac (Funk & Wagnalls Multimedia Encyclopedia)  Lycos Zone: Mathematics
A short biography of Sir Isaac Newton (16431727), focusing on The Fluxional Method, Optics, and The Principia.
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 Optique & Cabri  Charrier et Cortial
A collection of classic diagrams created using Cabri Géometre, reworked in Paint Shop Pro, and some have animated GIFs. Optique Géométrique (reflections and mirrors, refractions and diopters, thin lenses, optical instruments); Optique
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 Shedding Light on the Subject: Function Models of Light Decay (iMath Investigations)  Illuminations; National Council of Teachers of Mathematics (NCTM)
An online, interactive, multimedia math investigation in which students develop and analyze exponential models for the behavior of light passing through water. Accompanying video clips show the iMath in action in real classrooms.
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 SIMMS IM LEVEL I  Research Project Help  T. DeBuff
High School freshmanlevel integrated mathematics research projects, to be used with the Systemic Initiative for Montana Mathematics and Science Integrated Math (SIMMS IM), curriculum Level I. View project descriptions and find links to sites that will
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 Sir William Rowan Hamilton  D.R. Wilkins; School of Mathematics, Trinity College, Dublin
Material relating to Sir William Rowan Hamilton, including his letters and papers describing mathematical optics and conical refraction, dynamics, the theory of algebraic couples (complex numbers), the theory of equations, and quaternions; a memorial
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 Soap Bubbles  Ron Hipschman; The Exploratorium
Why does a bubble form a sphere? Why not a cube, tetrahedron, or other geometrical figure? This site from San Francisco's Exploratorium provides information on the shape of bubbles and what happens when bubbles meet, with formulas for longlife bubble
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 TotiPM  Jordi Lagares Roset, Prof. of Mathematics, Girona
Una página basicamente en Catalán, pero con referencias también en castellano e inglés. Páginas didácticas, problemas, software. A page primarily in Catalan but with Spanish and English language references. Lessons,
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 Toys from Trash  Arvind Gupta
Stepbystep photographic instructions for building elegantly simple, colorful "Math Magic" doityourself manipulatives: Abacus, Flexagon, Triangle Grid, Flat Flexagon, Slipper Insets, Folding Pentagon, Tangram, Paper Octagon, Cylinder and Cone, Area
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 Who was Marin Mersenne?  Luther Welsh
It was not until the mid 20th century that Mersenne became known primarily for his Prime Number Conjecture. Historically, he was much better known for his correspondence with leading scientists of the day. Interested in optics, he also been called the
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