3528 SMD Bulb Waterproof 300 LEDs RGB Light Strip 5M. Home. SMD 1210 Flexible LED Lights Strips 60 LEDs 1m Red. Flexible LED Lights Strips.Since blushing or showcase your company name! Can be cut every 3 pcs for with the LED flexible red SMD Flexible LED lights Strips on a flex strip, which may reduce it to just the right length, you do illustrate very specifically the things that matter. 3M pastern in back ,easy to be installed and used.Cheap Led Strips.
SMD Flexible LED Lights strips with a length of 5 meter at a reel . Flexible LED lights strips operating on DC12V (11-13V) you can easily create decor lighting for any place. The high-quality LED strip has a double-sided adhesive tape at the back. You can stick on him therefore comfortably at the desired application place. On 5 cm of stipe are 3 high power SMD LEDs. That means, you have on 1 meter SMD flex strip 60 LEDs. LED center » How many LEDs can I drive in series? It depends on your supply voltage. You have to be able to overcome the cumulative forward voltage of the series combination in order to get them lit.
As an example, with a 12 VDC supply, you could drive up to five red LEDs (2.1V @ 20 mA) in series. The current isn’t used in the calculation: 5 * 2.1V = 10.5, which is less than 12, but 6 * 2.1V = 12.6 which is over 12, so five is the maximum series combination for that type of LED at that supply voltage. When you need more, you can build arrays by combining multiple series strings in parallel. In that case, your load current needs to be calculated and kept lower than the rated supply current. [prev: How do I drive LEDs from alternating current?] Drill press. The Rising Table. Coup de coeur pour cette très belle table basse, conçue en bois et imaginée par le designer Robert van Embricqs en provenance des Pays-Bas. Une réalisation qui permet de compacter et de plier la table à plat.
Plus d’images dans la suite de l’article. Feature Column from the AMS. The inflated tiling is itself a tiling by thick and thinrhombs and, as such, it has an inflated tiling as well. This creates,from a single tiling, an infinite hierarchy of tilings in which eachtiling is the inflated tiling of its predecessor. Introduction: Tilings Tilings, like the one below, show up in many places in the world around us, from the tiles on our kitchen floors to the bees' honeycombs. They generally have a pleasing, even fascinating, quality, their regularity often expressing some natural harmony. Most of us are aware that tiling the plane with a single type of regular polygonal tile is possible only with triangles, squares and hexagons. Johannes Kepler, in his 1619 work Harmonice Mundi, created the first list of all the Archimedean tilings, tilings that can be created from sets of regular polygons.
These tilings possess many symmetries. Another way to express this fact is to say that there are translational symmetries of the tiling. Matching Rules Constructing tilings J.V. Penrose Tilings. Penrose Tilings Kyle Schultz This webpage provides an introduction to Penrose Tilings and their properties. Discovered by Roger Penrose (1931- ), a British physicist and cosmologist, these tilings are non-periodic and incorporate properties of the Golden Ratio. Tilings A tiling is created when a collection of plane figures (tiles) fills a plane such that no gaps occur between the tiles and no two tiles overlap each other. Tilings can be either periodic or non-periodic. Periodic Tilings A periodic tiling repeats itself at regular intervals. Image Source: Wikipedia and many of patterns featured in the art of M.C. Martin Gardner (1989) provides an insightful way to think of periodic tilings: "Think of the plane as being covered with transparent paper on which each tile is outlined.
Non-Periodic Tilings Any tiling that is not periodic is called non-periodic. In most cases, the tiles used in these tilings could also be used to create a periodic tiling. Penrose Tilings - Kites and Darts Resources. Penrose Tiling. Assig6Alexel.gif (399×284) My pentagonal coffee table. The pentagonal coffee table that was mentioned in Dissections: Plane & Fancy, by Greg N. Frederickson: Dick Ruth (at Shippensburg University, Shippensburg, Pennsylvania) asked to see some pictures of the pentagonal coffee table that I had designed and which was mentioned in my biography. Here are two photos that I made before I installed the glass top. The table consists of a pentagonal frame that holds a bronze casting of a surface consisting of identical rhombuses. It is about a meter across, and the cross braces for the legs form a pentagram. The second photo gives a fairly good idea how the bronze surface is based on Penrose tiles: Viewed from above, a projection of the surface onto a plane appears to be tiled with two types of rhombuses, those with angles of 36 and 144 degrees, and those with angles of 72 and 108 degrees.
The lost wax technique was used to form the bronze casting. I talked a German baptist cabinetmaker into building the wooden frame. Copyright 1997-2005, Greg N. Ancient Islamic Penrose Tiles. Architecture Unit 5. Polygons, Tilings, & Sacred Geometry Slide 5-1: Pompeii pavement Calter photo In the last unit, Number Symbolism, we saw that in the ancient world certain numbers had symbolic meaning, aside from their ordinary use for counting or calculating. In this unit we'll show that the plane figures, the polygons, triangles, squares, hexagons, and so forth, were related to the numbers (three and the triangle, for example), were thought of in a similar way, and in fact, carried even more emotional baggage than the numbers themselves, because they were visual.
This takes us into the realm of Sacred Geometry. For now we'll do the polygons directly related to the Pythagoreans; the equilateral triangle (Sacred tetractys), hexagon, triangular numbers, and pentagram. We'll also introduce tilings, the art of covering a plane surface with polygons. Polygons Slide 5-23: Design at Pompeii Calter photo A polygon is a plane figure bounded by straight lines, called the sides of the polygon.
Regular Polygons Tilings. Physics I: Classical Mechanics - Download free content from MIT. Your source of daily updated funny pictures and gifs. Ten Most Extreme Substances Known to Man | Ten Most. Read These Seven Books, and You’ll be a Better Writer. Donald Miller I used to play golf but I wasn’t very good. I rented a DVD, though, that taught me a better way to swing, and after watching it a few times and spending an hour or so practicing, I knocked ten strokes off my game.
I can’t believe how much time I wasted when a simple DVD saved me years of frustration. I’d say something similar is true in my writing career. If you read these books, your writing will improve to the point people who read your work will begin to comment on how well you write. . • The War of Art by Steven Pressfield: This book is aimed at writers, but it’s also applicable to anybody who does creative work. Pressfield leaves out all the mushy romantic talk about the writing life, talk I don’t find helpful. . • On Writing Well by William Zinsser: Zinsser may be the best practical writing coach out there.
. • Bird by Bird by Anne Lamott: Before becoming a literary superstar, Anne Lamott taught writing, and Bird by Bird is the best of her advice, broken up into chapters. Universal robotic gripper. Robert Barker/University Photography The human hand is an amazing machine that can pick up, move and place objects easily, but for a robot, this "gripping" mechanism is a vexing challenge. Opting for simple elegance, researchers from Cornell, the University of Chicago and iRobot Corp. have created a versatile gripper using everyday ground coffee and a latex party balloon, bypassing traditional designs based on the human hand and fingers. They call it a universal gripper, as it conforms to the object it's grabbing, rather than being designed for particular objects, said Hod Lipson, Cornell associate professor of mechanical engineering and computer science.
The research is a collaboration between the groups of Lipson, Heinrich Jaeger at the University of Chicago, and Chris Jones at iRobot. It is published online Oct. 25 in Proceedings of the National Academy of Sciences. John Amend The robotic gripper conforms to the shape of the item it is lifting. Is the Universe a Holographic Reality? The Universe as a Hologram by Michael Talbot Does Objective Reality Exist, or is the Universe a Phantasm? In 1982 a remarkable event took place. At the University of Paris a research team led by physicist Alain Aspect performed what may turn out to be one of the most important experiments of the 20th century. You did not hear about it on the evening news.
Aspect and his team discovered that under certain circumstances subatomic particles such as electrons are able to instantaneously communicate with each other regardless of the distance separating them. University of London physicist David Bohm, for example, believes Aspect's findings imply that objective reality does not exist, that despite its apparent solidity the universe is at heart a phantasm, a gigantic and splendidly detailed hologram. To understand why Bohm makes this startling assertion, one must first understand a little about holograms. This insight suggested to Bohm another way of understanding Aspect's discovery. Crystal Egg Geodes - Martha Stewart Easter.
Geodes can be grown without using egg dye. The resulting crystals are clear to milky white, like quartz. While large chicken eggshells are suggested in this process, larger eggshells can be used. Simply increase the size of the plastic or glass container and double or triple the amounts of dye (1 packet), alum (3/4 part), and water (2 parts) used to create the growing solution.
This Easter craft from Jim "Figgy" Noonan doubles as a science project, offering an opportunity to show kids the crystallization process at work. Resources: If you don't want to blow your own egg or would like to try a larger eggshell, pre-blown shells are available from The Eggery Place. Us Now. A film project about the power of mass collaboration, government and the Internet. In his student flat in Colchester, Jack Howe is staring intently into his computer screen. He is picking the team for Ebbsfleet United's FA Trophy Semi-Final match against Aldershot. Around the world 35,000 other fans are doing the same thing, because together, they own and manage the football club. If distributed networks of people can run complex organisations such as football clubs, what else can they do? Us Now takes a look at how this type of participation could transform the way that countries are governed. It tells the stories of the online networks whose radical self-organising structures threaten to change the fabric of government forever.
Us Now follows the fate of Ebbsfleet United, a football club owned and run by its fans; Zopa, a bank in which everyone is the manager; and Couch Surfing, a vast online network whose members share their homes with strangers. Watch the full documentary now. Blowing fishes | Find Wall Art Canvas Prints | YayArt. How To Make A Used Thrift Store Painting MOAR AWESOME.