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A film for a wide audience! Nine chapters, two hours of maths, that take you gradually up to the fourth dimension. Mathematical vertigo guaranteed! Background information on every chapter: see "Details". Click on the image on the left to watch the trailer ! (turn your speakers on please). Free download and you can watch the films online! The film can also be ordered as a DVD. This film is being distributed under a Creative Commons license. Now with even more languages for the commentary and subtitles: Commentary in Arabic, English, French, German, Italian, Japanese, Spanish and Russian. Film produced by: Jos Leys (Graphics and animations) Étienne Ghys (Scenario and mathematics) Aurélien Alvarez (Realisation and post-production)

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110+ Variations of the Second Law of Thermodynamics Questions about these second law variations? Know of other second law definitions? Copyright © Institute of Human Thermodynamics and IoHT Publishing Ltd. Flatland: A romance of many dimensions With Illustrations by the Author, A SQUARE (Edwin A. Abbott 1838-1926) To The Inhabitants of SPACE IN GENERAL And H. C. IN PARTICULAR This Work is Dedicated By a Humble Native of Flatland In the Hope that Even as he was Initiated into the Mysteries Of THREE Dimensions Having been previously conversant With ONLY TWO So the Citizens of that Celestial Region May aspire yet higher and higher To the Secrets of FOUR FIVE OR EVEN SIX Dimensions Thereby contributing To the Enlargement of THE IMAGINATION And the possible Development Of that most rare and excellent Gift of MODESTY Among the Superior Races Of SOLID HUMANITY The first objection is, that a Flatlander, seeing a Line, sees something that must be thick to the eye as well as long to the eye (otherwise it would not be visible, if it had not some thickness); and consequently he ought (it is argued) to acknowledge that his countrymen are not only long and broad, but also (though doubtless in a very slight degree) thick or high.

Articles on "Electricity" Why three prongs?Why do wall outlets have three holes? "Grounding" and safety. Right Angle CircuitryDo Lenz' Law and the Right Hand rule still work... after you've been turned INSIDE OUT by that greasy black Fog? Science & Environment Imagine if you could see time laid out in front of you, or surrounding your body. And you could physically point to specific dates in space. Important dates might stand out - birthdays, anniversaries. And you could scan a visible timeline - to check if you were available - whenever you made plans. No actual diary necessary. According to Julia Simner, a psychologist from the University of Edinburgh, there is a reasonable chance you can. Special Relativity Special Relativity These pages are ok as far as they go, but they are missing the planned highlight, to show you what things actually look like when you travel at near the speed of light. I hope to have the opportunity to develop these pages further as time permits. Here is my opinionated Guide to Special Relativistic Flight Simulator Sites.

What would Earth's skies look like with Saturn's rings? Posted By Jason Davis Topics: pretty pictures, art Illustrator and author Ron Miller specializes in, among other things, incredible visualizations of other worlds. He has rendered the surface of Titan, peered into black holes for Discover magazine, and designed a Pluto stamp that is currently hurtling toward the far reaches of our solar system aboard the New Horizons spacecraft. Usenet Physics FAQ Version Date: March 2013 This list of answers to frequently asked questions in physics was created by Scott Chase in 1992. Its purpose was to provide good answers to questions that had been discussed often in the sci.physics and related Internet news groups. The articles in this FAQ are based on those discussions and on information from good reference sources. They were later maintained and enlarged by Michael Weiss and Philip Gibbs.

Stanford researcher: Hallucinatory 'voices' shaped by local culture By Clifton B. Parker Steve Fyffe Tanya Luhrmann, professor of anthropology, studies how culture affects the experiences of people who experience auditory hallucinations, specifically in India, Ghana and the United States. People suffering from schizophrenia may hear "voices" – auditory hallucinations – differently depending on their cultural context, according to new Stanford research. In the United States, the voices are harsher, and in Africa and India, more benign, said Tanya Luhrmann, a Stanford professor of anthropology and first author of the article in the British Journal of Psychiatry.

HPS 0410 Einstein for Everyone Title page, Preface and Table of Contents for Einstein for Everyone Introduction: the Questions Special Relativity Special Relativity: the Principles Special Relativity: Clocks and Rods It’s Beginning to Smell a Lot Like Christmas: The Neuroscience of Our Nostalgia The views expressed are those of the author and are not necessarily those of Scientific American. Traditional cookies ever bring back your childhood memories? Science knows why (credit: Amanda Baker) Have you ever smelled something so familiar that it felt like you were transported back through time into one of your earlier memories? Have freshly baked cookies, your grandmother’s chili sauce, or a specific brand of sunscreen after a long winter actually affected the way you feel? It turns out that science can explain this link between important memories and the smells associated with them.

10 Strange Things About The Universe Space The universe can be a very strange place. While groundbreaking ideas such as quantum theory, relativity and even the Earth going around the Sun might be commonly accepted now, science still continues to show that the universe contains things you might find it difficult to believe, and even more difficult to get your head around.

Homosexuality Might Develop in the Womb Due to Epigenetic Changes Credit: Shutterstock/Anton Gvozdikov; University of California. According to a newly released hypothesis, homosexuality might not lie in DNA itself. Instead, as an embryo develops, sex-related genes are turned on and off in response to fluctuating levels of hormones in the womb, produced by both mother and child. Gravitational microlensing Gravitational microlensing is an astronomical phenomenon due to the gravitational lens effect. It can be used to detect objects ranging from the mass of a planet to the mass of a star, regardless of the light they emit. Typically, astronomers can only detect bright objects that emit lots of light (stars) or large objects that block background light (clouds of gas and dust). These objects make up only a tiny fraction of the mass of a galaxy. Microlensing allows the study of objects that emit little or no light. When a distant star or quasar gets sufficiently aligned with a massive compact foreground object, the bending of light due to its gravitational field, as discussed by Einstein in 1915, leads to two distorted unresolved images resulting in an observable magnification.

Gravitational lens A light source passes behind a gravitational lens (point mass placed in the center of the image). The aqua circle is the light source as it would be seen if there was no lens, white spots are the multiple images (or Einstein ring) of the source. A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and an observer, that is capable of bending the light from the source as the light travels towards the observer. This effect is known as gravitational lensing, and the amount of bending is one of the predictions of Albert Einstein's general theory of relativity.[1][2] (Classical physics also predicts the bending of light, but only half that predicted by general relativity.[3]) Although Einstein made unpublished calculations on the subject in 1912,[4] Orest Khvolson (1924)[5] and Frantisek Link (1936)[citation needed] are generally credited with being the first to discuss the effect in print. Description[edit]