Polyhedra by Jim McNeill: last updated 23 Apr 2013. Note: If you are having difficulty viewing the VRML files, then download the latest version of Cortona from here. HEDRON: Polyhedron generating software, now at V1.12, available here. Help text here. Hedron Tools (Release 2B). Brain Games for Adults Brain games are fun to play at gatherings, meetings, kitty parties or on outings. Most of the brain games usually include trick questions and brain teasers, or some very hard riddles. The following are some brain games that you can play in both small and large groups. These games test some of the capabilities of the brain like concentration, memorization and flexibility. The Stroop Test The Stroop test is a brilliant way to test a person's mental flexibility and concentration.

125 Great Science Videos: From Astronomy to Physics & Psychology Astronomy & Space Travel A Brief, Wondrous Tour of Earth (From Outer Space) – Video – Recorded from August to October, 2011 at the International Space Station, this HD footage offers a brilliant tour of our planet and stunning views of the aurora borealis.A Universe from Nothing – Video – In 53 minutes, theoretical physicist Lawrence Krauss answers some big enchilada questions, including how the universe came from nothing.A Year of the Moon in 2.5 Minutes – Video – The Lunar Reconnaissance Orbiter has been orbiting the moon for over a year. The footage gets compressed into 2 slick minutes.A Day on Earth (as Seen From Space) – Video – Astronaut Don Pettit trained his camera on planet Earth, took a photo once every 15 seconds, and then created a brilliant time-lapse film.Atlantis’s Final Landing at Kennedy Space Center – Video – After more than 30 years, the space shuttle era comes to a close.

Remember Names Game How to Play Remember the names of the people in the pictures as they introduce themselves.Type in their names when prompted. (case-insensitive, but spelling matters) Warning: The pictures used in this game were randomly collected and some of them may be odd, but that just adds to the fun. Cognitive Rehabilitation Word Game Quizzes Cognitive rehabilitation can be helped by performing regular cognitive exercises that force the brain to work a little. This simple word game quiz provides just such a workout, but can be done in the non-threatening environment of your home. Since you can download and print the quizzes, they can be used over and over again. Each quiz contains a tracking line if you want to use it to measure progress. For instance, you can take Quiz One as many times as you wish.

Quaternion group where 1 is the identity element and −1 commutes with the other elements of the group. Cayley graph[edit] The Q8 group has the same order as the Dihedral group, D4, but a different structure, as shown by their Cayley graphs: Brain Age Test 01 (Instantaneous Memory) How to Play This is a brain training game which enables you to strengthen your instantaneous memory and eyesight. Click [START]. After a countdown (wait for 3,2,1), you will see some numbers. Memorize the number's position on the screen quickly. The numbers will disappear for 0.7 seconds.

Free Math Textbooks Free textbooks (aka open textbooks) written by knowledgable scholars are a relatively new phenomenon. Below, find a meta list of Free Math Textbooks, part of our larger collection 200 Free Textbooks: A Meta Collection. Also see our online collection, 1200 Free Online Courses from Top Universities. The Brain—Information about the Brain 1 Introduction “I think, therefore I am.” —René Descartes, 17th-century philosopher A Physics Booklist [Physics FAQ] - [Copyright] Updated 2005. Updated 1994—1997 by SIC, PEG. Original by Vijay Fafat. This article is a compilation of books recommended by sci.physics participants as the "standard" or "classic" texts on a wide variety of topics of general interest to physicists and physics students.

Top 10 Brain Myths" At one time in history, decapitation was one of the preferred methods of execution, in part thanks to the guillotine. Although many countries that execute criminals have dispatched with the method, it's still performed by certain governments, terrorists and others. There's nothing more final than the severing of one's head. The guillotine came about because of the desire for a quick, relatively humane death. But how quick is it? If your head were cut off, would you still be able to see or otherwise move it, even for just a few seconds?

The Craig Web Experience Computer Graphics and Geometric Ornamental Design Craig S. Kaplan. PhD thesis, 2002 Inspired by the wonderful page Robert Glenn Scharein has dedicated to his PhD thesis Interactive Topological Drawing, I decided to give my own thesis a happy little home on the internet. Memory Learning Games For Kids Memory Games Memory Games Kids love playing memory games online.

Tilings On this page I will show some of my research into tiling patterns. Tiling Viewer Applet I have written a Java applet that allows you to see lots of different tilings. Click the link below to launch the applet in a new window. It is about 1.3 MB in size, so may take a moment to load. Launch the Tiling Viewer Applet

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