# Joue

Rube goldberg machine. Leslie's Artgallery : Digital Art - Voronoi Fractal. Voronoi Fractal Frederik Vanhoutte (2008) In mathematics, a Voronoi diagram, named after Georgy Voronoi, also called a Voronoi tessellation, a Voronoi decomposition, or a Dirichlet tessellation (after Lejeune Dirichlet), is a special kind of decomposition of a metric space determined by distances to a specified discrete set of objects in the space, e.g., by a discrete set of points (source Wikipedia).

More details about Voronoi diagrams have been published by Shubhendu Trivedi on his blog Onionesque Reality. Voronoi fractals are created by dressing a Voronoi diagram from some points. Next, more points are added and new Voronoi diagrams are created inside each original Voronoi region. Cloud9science @ Wiki - Sesame interrupteur à lames. Digital archive for vision science - Visiome Platform. Index. Over the years several mechanical drives have been proposed for various reasons, most importantly to reduce sidewise forces onto pistons or sliding parts with the objective to reduce friction and wear and satisfying constraints imposed by the thermodynamics of Stirling engines.

Literally, hundreds of different kinematic mechanisms have been invented over the past centruries, a nice collection of these can be found at Cornell University's Model collection. Follow the link to "Models" and click on any of the 3 collections offered to get a nice menu for all documented models. Look for Straight-line Mechanism ( in particular model S35, Peaucellier ) if you are interested in the conversion from straight-line to rotary motion and back. To first order, two properties of a drive mechanism influence the performance of Stirling engines, the volume amplitude ratio and the phase lag between expansion and compression space. Optical Illusions and Visual Phenomena. Digital archive for vision science - Visiome Platform.

Cube. What is the Cube?

The cube is a mathematical body formed by six equal squares. Other names are cubus or hexahedron. In the 1980's Rubik's cube was so popular that it was simply called "the cube". Catégorie:Animation.

### Homopolar roller

Fournisseur. Joue vid. "Sécurité enfant" science croissance Wow!expériences scientifiques de navigation. Expériences de cours. いろいろな光をみよう！｜「科学に強い子」を育てる ワオ！科学実験ナビ. わっか取りペン落としをしてみよう！｜「科学に強い子」を育てる ワオ！科学実験ナビ. 影の色を調べよう！｜「科学に強い子」を育てる ワオ！科学実験ナビ. "Sécurité enfant" science croissance Wow!expériences scientifiques de navigation. ブラックウォールを体験しよう！｜「科学に強い子」を育てる ワオ！科学実験ナビ. ブラックウォールを体験しよう！｜「科学に強い子」を育てる ワオ！科学実験ナビ. Gyroscope.com - gyroscopes, educational toys and gadgets. Historical Physics Teaching Apparatus. Instruments for Natural Philosophy Thomas B.

Greenslade, Jr.Professor Emeritus of PhysicsKenyon College, Gambier, Ohio 43022GREENSLADE@KENYON.EDU In February 1975, Deborah Jean Warner, a Curator of Physical Science at the National Museum of American History, called me to ask if Kenyon had any historical physics teaching apparatus. I looked around my office, and reeled off the names of four or five good pieces of apparatus that I was using in my lectures.

MOVE FORM" It's a transformer!! Chris Sangwin's Home Page. Cloud9science @ Wiki - compas solaire. Cloud9science @ Wiki - Boîte de 100 yen shop "light" Optical Illusions and Visual Phenomena. Gestalt in Isoluminance. Warn­ing: this is some­what sub­tle.

What to do & see On the right there is a sim­pli­fied ver­sion of the paint­ing “Nu bleu II” by Henri Ma­tisse. Lilac Chaser. Cube Soma. Top 10 Bizarre Accidents. Weird Stuff Strange accidents occur all over the world, every day. We see these accidents on the news and all over the internet, but some of the strangest accidents that have ever happened can be found in history books. Here are just a few of those strange accidents in history.

This list has a little overlap with our bizarre disasters, but the entries are all appropriate for this list and give more details, so they are included. Anaglyphes à Lyon Fourvière - Avril 2008 - David ROMEUF. Anaglyphe.

### Exceptionnel

Images Scientific Instruments - Science Projects, Electronic Kits, Robotic Kits and Accessories, Microcontroller Compilers and Programmers, Parts. Weird Stuff, magnets, Remote, Keychain & More Weird Stuffs on Sale - DealExtreme. （株）ハナヤマ. MARQUETERIES. Japan Kendama Association Official Home Page. Daruma korogashi. Kendama.fr : le blog du kendama. Build a magnetic ring launcher. This very simple toy keeps amazing me with new tricks.

My friend Jef Raskin first described it to me, and we have both been having fun with variations ever since. All it consists of is ten little magnetic beads on a carbon graphite composite rod. Science Toys.

### Couleur ombre

Plasma Globe page! "like lightning in a bottle" Table Of Contents: The Plasma Globe, or Inert Gas Discharge Tube, as Nikola Tesla (it's inventor) first called it, is perhaps one of the most beautiful manifestations of plasma.

Also known as "Plasma Spheres", "Lightning Globes", "Thunder Domes", and others, these glass spheres with dancing streams of plasma inside them have been looked at, and admired, by people all over the world, in sci-fi movies, science museums, and even some shops. Skori Weblapja. Résultats Google Recherche d'images correspondant à. Stanhope (optical bijou) Stanhope ball. The viewing lens cylinder is located at the smaller diameter opening Stanhopes or Stanho-scopes are optical devices that enable the viewing of microphotographs without using a microscope.[1][2] They were invented by René Dagron in 1857.[1] Dagron bypassed the need for an expensive microscope to view the microscopic photographs by attaching the microphotograph at the end of a modified Stanhope lens.[1] He called the devices bijoux photo-microscopiques or microscopic photo-jewelry.[3] In 1862, Dagron displayed the devices at the Exhibition in London, where he got an "Honourable Mention" and presented them to Queen Victoria.[4] In 1864 Dagron became famous when he produced a stanhope optical viewer which enabled the viewing of a microphotograph 1 square millimetre (0.0016 sq in), (equivalent in size to the head of a pin),[5] that included the portraits of 450 people.[6][5]

Volume 04. Dropper Popper at Educational Innovations. Dropper Poppers are more than just half of a rubber ball. Made only in Australia, this incredible device seemingly defies the laws of physics by bouncing higher than where you dropped it from! Unlike some similar products, this one requires a small amount of 'activation energy' to work. It is molded into a very special shape that allows it to store elastic potential energy and then convert it to kinetic energy with a POP when dropped from a low height (i.e. a small amount of activation energy is applied.) The Giant Mirage® 3-D Instant Hologram maker, three-dimensional real image, holograms, parabolic mirror, Some Users of our Giant Mirage®: Giant Mirage® is a commercial product.

Our customers are Museums, Universities, Tradeshow Exhibitors, Corporate Displays and Architects. Call it a marvel. Call it impossible. Floating Globes - SimerLab. Television Stones - Ulexite at Educational Innovations. Ulexite - The Television StoneThese amazing mineral specimens of hydrated sodium calcium borate are composed of thousands of fibrous fragments which transmit light.

When the polished bottom surface is placed upon a printed page, the words can be read on the top surface, giving the appearance of a television screen. Ulexite is a naturally occurring fiber-optic material -- a fantastic addition for your science table! Each specimen is about 1/2-inch thick with a surface area of approximately 2 inches. All naturally occurring Ulexite contains some impurities. Smashing! Steel Sphere Demo Kit at Educational Innovations. When two 1-pound, 2-inch diameter, chrome steel spheres are smashed together, enough heat is generated at the point of contact to burn a hole in a piece of ordinary paper!

This amazing demonstration graphically illustrates the conversion of mechanical energy into heat energy. Although there are no flames, a charred hole appears along with the odor of burnt paper. The kit contains two steel spheres and instructions. Glass. Born in the village of Igelshieb, in the Rennsteig area of the Dukedom of Saxony-Meiningen, Geissler is a well known figure in the history of scientific instruments since the descendants of his inventions - the Geissler tube and the mercury vacuum pump are still in use today. Igelshieb is a suburb of Neuhaus am Rennweg in the state of Thuringia, Germany.

The house of birth of Geissler is still there and contains a nice collection of Geissler tubes and those of other plasma heroes. This is organized by the Förderverein Heimatmuseum Geissler - Haus e.V. with its president Rolf Schöler in Neuhaus, available at sylvia.schoeler@web.de . Geissler's father Georg was an innovative glass-blower and maker of instruments such as barometers and thermometers. Innovative science stuff, activities & incursions. How round is your circle? Mirage® 3-D Instant Hologram maker, three-dimensional real image, holograms, parabolic mirror, Woodpecker Potential Energy Demo Kit at Educational Innovations. South Pointing Things. Calcite Crystal - Iceland Spar at Educational Innovations.

Singing Rod at Educational Innovations. One Nanosecond: Speed of Light Bar at Educational Innovations. Level 3 Puzzle Page. Magic Sand Wand by Fascinations Unique Toys & Gifts. Tiling by Similar Triangles. Rattandeep Enterprise - Tin Toys. Floating Globes - SimerLab. Floating Yen Coins at Educational Innovations. 2 teeth gear set paradoxical and standard. Magnetic Field Viewer Film at Educational Innovations. Ice Melting Blocks, Thermal Energy Experiments at Educational Innovations. The Physics of LEVITRON. Mekonikuv blog. Solution to the "Missing Square Problem"