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"Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution." Albert Einstein (discuss)

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Wikiversity is a Wikimedia Foundation project devoted to learning resources, learning projects, and research for use in all levels, types, and styles of education from pre-school to university, including professional training and informal learning. We invite teachers, students, and researchers to join us in creating open educational resources and collaborative learning communities. To learn more about Wikiversity, try a guided tour, learn about adding content, or start editing now.

Today's Featured Project
Introduction to Computers is a very gentle introduction to computers for complete beginners. The course was originally taught to a real-world class and largely consists of the reworked contributions of individual students. The 12 lessons are each framed around concepts and terms used in a particular area of computing. The terms are explained simply and clearly, with the use of plenty of images. The students have also linked the course into many of their podcasts where they explain things in their own words. The value of this course lies particularly in its orientation towards complete beginners and its comprehensiveness.

The Formation of a Rainbow
1. Spherical droplet
2. Places where internal reflection of the light occurs
3. Primary rainbow
4. Places where refraction of the light occurs
5. Secondary rainbow
6. Incoming beams of white light
7. Path of light contributing to primary rainbow
8. Path of light contributing to secondary rainbow
9. Observer
10. Region forming the primary rainbow
11. Region forming the secondary rainbow
12. Zone in the atmosphere holding countless tiny spherical droplets.
Diagram showing how primary and secondary rainbows are formed. Click on the image for a full size version which you can freely re-use and modify. Print it and use it for your lessons, integrate it into your pages on Wikiversity, or use it in other learning resources and websites. Use the links below to find more images like this one.

Guide to rainbow media - Prism images - Light images
Mechanics images - Electromagnetism images - Optics images - Atomic physics images
Images relating to physics in general


This image is a part of the
Educational Media Awareness Campaign, raising awareness among educators about the availability and usage of millions of free internet media in education.
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2019

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