background preloader

Best Illusion of the Year Contest

Best Illusion of the Year Contest
Related:  illusions d'optique

Ces 22 illusions d'optique vont vous couper le souffle ! La #20 est tout simplement géniale ! Quand l’image joue avec notre vision des formes, des couleurs et de l’espace, cela donne des illusions d’optique particulièrement bluffantes. Il est si simple de tromper notre perception ! Qu’elles soient naturelles ou bien créées par l’homme, les illusions nous ont toujours fasciné. Interprétation erronée, erreur d’appréciation, paradoxes, distorsions, les images jouent avec notre esprit pour notre plus grand plaisir et pour le votre. Dans cet article, nous vous proposons de découvrir une sélection d’illusions d’optique statiques ou en gif animés. Vous êtes prêt ? #1 Eh oui, les deux blocs se déplacent à la même vitesse. #2 Quelle est la tour la plus penchée ? #3 Impossible vous avez dit ? #4 Ca bouge, hein ? #5 Le rectangle du milieu est d’une teinte unie. #6 Les lignes rouges sont droites et toutes parallèles. #7 Si vous vous concentrez sur la croix au milieu, les visages vont rapidement devenir… effrayants ! #8 Ce n’est rien… Juste votre cerveau qui vous joue des tours. ;)

50 Fresh Free Fonts of 2010 Though there's a broad variety of fonts available for download online, designers keep on tracing the fresh ones to enhance their design copy, a website, brochure, or even an advertisement in a brand new an' awesome way. Still, the free stuff could not always boast of good quality – premium goodies always demand some kind of money investment. However, now it's possible to find the appropriate font that's free, clear, beautiful, and effective for design purposes. Many great designers are now offering professional quality fonts completely for free. Today's round-up actually goes outside the standard font variety. Geomancy Kilogram Tribbon Quadranta Adec Teardrop St Marie Dekar Code Cube Piron Glide Planer Paranoid Circled St Ryde Danger Pincoyablack New Garden Titillium Text Sylar Scriber Mentone Circula Sansation LT Oksana Font V4.0 Lintel Frgmnt Amsterdam Sol Pro Tenby Zag Real Origami Tenderness Vegur Cash Sertig Junction Blackout Railway League Ghothic Goudy Bookletter 1911 Oval About the Author Lilian Rigo

Optical Illusions and Visual Phenomena Popular Science | New Technology, Science News, The Future Now At the nuvera fuel cells lab in Cambridge, Massachusetts, 25-year-old chemical engineer Darryl Pollica stands in front of a prototype 5-kilowatt fuel cell -- a miniature powerplant that can make most of the electricity needed by a family of four. Its metal skin has been removed to reveal a cubical frame about 5 feet on each side, packed with tanks, valves, and electronics. Conspicuously taped to the outside of the frame is a Nokia cellphone. "That's our mascot," Pollica says. "We want to shrink this," he says, opening his arms as if to embrace the entire assembly, "to this," and he brings them together and points toward the tiny phone. Pollica's boss, Nuvera Chief Operating Officer Jeff Bentley, a 25-year veteran of the difficult effort to create cost-effective fuel cells that are relatively small, is a bit more cautious. "We're optimists," Pollica shoots back with a confident smile. They better be. Nothing happened. But before we get there, the matter of cost has to be resolved.

Welcome to the demo for the illusory temporal reversal Illusory temporal reversal: demo page General Instructions: In the next page you will access the actual demo. Before you start, please move your mouse cursor onto the rotating background composed of blue crosses, and click once to make sure that the Flash program is working properly. Your eyes should be at about arm's length (~50cm) from the screen. Task Instructions: Now, when the yellow ring disappears from your perception, press any key on the keyboard once, as soon as possible. Note: You may need to repeat the experiment several times (to get acquainted with Motion Induced Blindness, the keypress procedure and the ensuing flash) before actually experiencing the illusion. Ready? In order to try it in your web browser, please click here.

20 illusions d'optique qui vont vous faire littéralement halluciner ! Les illusions d’optique sont vraiment incroyables. On découvre que ces images animées trompent notre système visuel pour modifier la réalité et en donner une perception modifiée et déformée. Voici une série de 20 illusions qui vont vous retourner la tête, de l’œil jusqu’au cerveau ! #1 – La chaise voilée d’Ibride Un concept renversant qui met à mal votre vision d’une simple chaise… #2 – Le Rubik’s cube en fausse 3D Une belle mise en scène qui joue sur les lignes de fuite et la vision de la perspective. #3 – Ceci est une image inanimée ! Non non, elle ne bouge pas, c’est votre œil qui crée le mouvement :) #4 – Des feuilles qui bougent sous l’effet du vent Ou c’est peut-être simplement vos yeux qui vous jouent un tour. #5 – Un fond d’écran animé… Ou pas ! Là encore, le mouvement n’est créé que par votre cerveau. #6 – Des serpents qui tournent… SsSssssssans tourner sssSSSssss… #7 – Rollers Hey, ça tourne ici. #8 – Illusion de mouvement #9 – Un cube flottant Ah ben non, encore raté ! La question est posée.

E-cards by Jacquie Lawson: Birthday Cards, Holiday Greetings & More Visual salience Visual salience (or visual saliency) is the distinct subjective perceptual quality which makes some items in the world stand out from their neighbors and immediately grab our attention. Definitions Our attention is attracted to visually salient stimuli. Visual attention may be a solution to the inability to fully process all locations in parallel. The core of visual salience is a bottom-up, stimulus-driven signal that announces “this location is sufficiently different from its surroundings to be worthy of your attention”. Visual salience is sometimes carelessly described as a physical property of a visual stimulus. Experiencing visual salience Below are simple examples of so-called search arrays stimuli, which contain many items, one of which should appear to the reader as highly visually salient. Neural and computational mechanisms Simple computational framework The essence of salience: competing for representation Neural and behavioral correlates Top-down modulation by task demands References

No More Thumbprints Researchers have made materials that repel oil and are able to clean themselves without the help of soap and water. What’s more, the researchers describe exactly how the materials work, which could help others design similar materials. This could lead to a range of applications, including fingerprint-shedding cell-phone displays. The researchers, from MIT and the Air Force Research Laboratory at Edwards Air Force Base, in CA, describe their results in the current issue of Science. Making super oil-repellant materials has been one of the great challenges in materials science, says Jeffery Youngblood, a professor of materials engineering at Purdue University, who was not involved in the research. “Before now, superoleophobic materials have been a pipe dream,” Youngblood says. The MIT and Air Force Research Laboratory researchers overcame the obstacles to super oil-repellant materials by combining two advances. But the chemistry of the material isn’t enough to make it super oil repellant.

Отмеченые поля A и B одинакового цвета (зрительная иллюзия)психо Комната Эймса — это помещение, сконструированное определенным образом, для того, чтобы вызывать оптическую иллюзию. Cоздана офтальмологом и психологом Адельбертом Эймсом в 1946 году, по оригинальной идее Гельмгольца. Комната воспринимается как обычная прямоугольная, хотя на самом деле таковой не является.Дальняя стена расположена под острым углом к одной стене и, соответственно, под тупым углом к другой. Схема комнаты Эймса. Ложная перспектива усугубляется клетчатым полом, и рисунками на полу и потолке. В результате оптической иллюзии, человек, стоящий в ближнем (к наблюдателю) углу такой комнаты, выглядит великаном, а находящийся в дальнем углу — карликом. При передвижении человека из одного угла в другой, создается ощущение, что он увеличивается в размерах или уменьшается.Видео: Комментариев: 10

LEGO Optical Illusion Mosaic This is what you get when you combine LEGO and optical illusions. Main effect – the circle made of the studs, produces the appearance of curved pieces. However, the design can appear very different depending on the angle it’s viewed from. 10 Blogs Entrepreneurs Need to Be Reading See the 2012 edition: 10 Must Read Blogs for Entrepreneurs (2012 Edition) #1. The Toilet Paper Entrepreneur Site: What it is: Mike Michalowicz provides entrepreneurs and small businesses with tips on everything from starting a business to networking to marketing and health care. Why you should read it: Mike not only provides great tips but he provides great tips from REAL people. #2. Site: What it is: Written by a panel of small business owners, the site offers tips and advice on everything business related. Small business trends really covers EVERYTHING! #3. Site: Run by two brothers, Matthew and Adam Toren, Young Entrepreneur is exactly what it sounds like; a site dedicated to young entrepreneurs. Between blog posts, forums, polls and interviews with other small business owners, the site offers fantastic content. #4. Site: Why you should read it: #5. #6. #7. #8.

Eye intensity response, contrast sensitivity telescopeѲptics.net ▪ ▪ ▪ ▪ ▪▪▪▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ CONTENTS ◄ 13.7. Combined eye aberrations, diffraction ▐ 13.9. Eye spectral response ► Eye light-intensity response Human eye is capable of responding to an enormous range of light intensity, exceeding 10 units on logarithmic scale (i.e. minimum-to-maximum intensity variation of over 10-billion-fold). In general, there is a minimum required change in signal intensity needed to produce change in sensation, and the latter is not necessarily proportional to the former. In 1834, German physiologist Ernst H. ΔI/I=constant (161) FIGURE 237: If Weber law strictly holds, brightness increment threshold, either alone or as a ratio vs. intensity, always changes linearly with the change in intensity. Gustav T. S=2.3klog10I+C (162) which is the general form of Fechner's law or, alternately, Weber-Fechner law. Fechner was aware that empirical data does not support this simple concept as a general law. S=kIa (163)

Related:  vision