In Monday's post, we created a sliceform model of a hyperbolic paraboloid. In today's post, we will create a similar model using skewers. The hyperbolic paraboloid is a ruled surface, which means that you can create it using only straight lines even though it is curved. In fact, the hyperbolic paraboloid is doubly ruled and is one of only three curved surfaces than can be created using two distinct lines passing through each point. The others are the hyperboloid and the flat plane.
This is for the parkour enthusiasts out there. There's a certain achievement, Spider Assassin, actually, which calls on the player to climb the entirety of the Hagia Sophia in under 25 seconds. Think you're up to it? The reward is 20G for Xbox 360 players, or a bronze trophy for PlayStation 3 players.
It's Monday, which means once again, it's time to highlight some of the recent community submissions posted to the Math Craft corkboard. I also thought that we'd try and create something known as an "Orderly Tangle" or "Polylink".
You're never going to see a project from me that involves straight pipe. You would have when I was a kid, but after too many years in the construction industry, I need to see a good finish. If the project doesn't look slick, I don't want to say I did it.
The order was given months ago: Build me a royal garden.
Scanner photography + sandwiches = Scanwiches (simply put: "scans of sandwiches for education and delight"). The web-famous Tumblr is the invention of Jon Chonko, a NYC-based designer at thehappycorp global.
Pinfish can be rigged many different ways depending on the location you are fishing and the type of presentation you want your bait to have.
The angle in which you shoot your subject can change everything. Sometimes when you take a picture at eye level looking straight at the object, things can appear flat and not as interesting. But instead of just snapping a picture, try getting down to the subjects level. For example, if you're taking a picture of a flower, get down close to the flower, and maybe angle your lense up, looking up at the flower, instead of looking down. Or angle your lense as if you're looking at the flower sidewa...
Budget Hack's cheap Wifi range extender works off of the age old concept of adding tin foil to your TV's rabbit ears. The materials are cheap, and the project is relatively easy (if you're willing to pick up some soldering skills).
CalTech's Kenneth Libbrecht reveals the sublime beauty of snow crystals when photographed with a specially designed snowflake photomicroscope. The physicist is author of the Field Guide to Snowflakes and The Secret Life of a Snowflake, and recently posted an instructional guide for growing your own snow crystals.
Alleviate your holiday shopping stress with this handy shipping deadline cheat sheet. It's all about organization (or the willingness to shell out extra for speedy delivery rates).
The clock is tickin'... Time to get those Jackass 3D Prank Contest entries in. And to remind you of what's at stake, here's an exclusive sneak preview from the upcoming Jackass 3D, straight from the source. Previously, Pssst. Win a Jackass Prank Day With Knoxville and Crew, Courtesy of WonderHowTo.
Sounds dirty, but this entry is straight up clean. According to the Art of Manliness, proper shaving has become a lost art and it's time to take a lesson in the old:
Let's face it. One day, you just might regret that tattoo you've been considering. If you're hesitant about making the commitment, try a less permanent solution. Craftzine posts a HowTo on creating your own temporary tattoos.
In this video, we learn how to do an elegant side bun. First, take your hair and brush it out. Next, tie your hair up on one side of the head, then ball your hair up with your hands. Use bobby pins to start to pin the hair on the head. Make the hair straight and without any lumps as you shape it with your hands. Stick it into place using bobby pins and use the pins to place any stray hairs as well. When finished, you can spray with hair spray for a stronger hold, then you are finished and rea...
Robert Xyster, submitter to Love.Earn, shares another military-grade HowTo. Yesterday's deadfall trap tutorial laid out how to catch and kill common Iraq rodents. Today's lesson demonstrates how to make a fire in the wild, and most importantly, how to conceal it behind enemy lines.
Tony Hawk may very well be the greatest skateboarder of all time. At age 42, the legendary Hawk can still pull off a 900. For those who don't know, a "900" refers to a 900 degree aerial spin off of a skateboard ramp. This is one of the most insane skateboarding tricks, and Hawk is one of only four (in the world) who have ever pulled it off.
Royal College of the Arts student Merel Karhof has come up with an innovative way to harness natural resources: a wind knitting factory. Merel's device is a mechanical wind-powered knitting machine that sustainably produces long tubes of knitted material. Nice. I'd let the wind knit my scarves.
This article from AOL's Games.com explains how a Farmville user can get access to exclusive gifts inside Zynga's Farmville store.
Introducing the Bagger 288, built by Krupps in Germany. Weighing in at 45,000 tons, this bad boy is the biggest moving machine on the planet.
"Hey all you hick chicks, dixie divas and you southern bells," you can learn the dance to Hick Chicks with this great how to video. In this tutorial from MTV, professional dancer Stacey Flood teaches you how to do the dance combo from the music video for the rap/rock "Hick Chicks" by Cowboy Troy. So if you "you're a straight up countrified female", check out this video and soon you can be dancing the "Hick Chick" dance. Do a the dance to "Hick Chick" by Cowboy Troy with MTV.
Start by lying on your side on the floor or mat with the legs extended. The elbow should be directly underneath the shoulder to support the body. As you contract your abdominals, use your torso to lift yourself off of the mat while your elbow and feet are touching the ground. Hold this for 10 to 15 seconds making sure that the spine and neck are in a neutral position. Repeat on the opposite side.
The Fireworks 8 pen tool lets you create straight or curved line segments by placing points. Pen tool creates object lines that can be altered by sub-selecting and modifying one or more control points. In this Fireworks 8 video tutorial you will learn how to use Vector Pen Tool, and adjust its parameters. Make sure to hit "play tutorial" in the top left corner of the video to start the video. There is no sound, so you'll need to watch the pop-up directions. Use the Vector Pen Tool in Firework...
This magic trick requires a coin, your ability to snap your fingers, and long sleeves. If you possess all of these then you too can become a world class magician. Learn to make a coin disappear out of the palm of your hand with just the snap of a finger. Although the video is super short, it's straight to the point — no illusion here! Make a coin disappear by snapping your fingers.
Virtual autopsies are the wave of the future in forensic medicine, using three-dimensional x-ray techniques instead of hacking through a mess of blood and guts. The Virtual Autopsy Table allows the cause of death to be determined quickly to aid in criminal investigations. Amazing - straight out of Bones or CSI.
Have you always wondered how to make a customizable and efficient TNT cannon in Minecraft? Are you looking to raid some bases on a PVP/factions/griefing server, but don't know where to start? Well, this tutorial will go over how to make a TNT cannon, and the different ways you can customize it to your liking.
Welcome to Minecraft World! Check out our advanced tutorials and come play on our free server. While mining is a basic aspect of Minecraft, it is often overlooked. Every adventure requires iron and diamonds and other ore and if you're playing in hardcore mode then you need all the help you can get.
Welcome to Minecraft World! Check out our advanced tutorials and come play on our free server. One of the newest features to be added to Minecraft is the hunger bar. Since the final 1.8 update, players go hungry over time if they don't replenish themselves. Hunger is also determined by the level of activity, meaning the more you run about or kill monsters, the hungrier your character becomes.
Welcome to Math Craft World! This community is dedicated to the exploration of mathematically inspired art and architecture through projects, community submissions, and inspirational posts related to the topic at hand. Every week, there will be approximately four posts according to the following schedule:
Minecart rides primarily serve two different functions—transportation or entertainment. We rarely see minecart-based transportation systems in Minecraft these days because most servers support warps or allow users to set multiple homes that they can simply teleport to. That leaves the primary purpose of entertainment.
If you're like me, you were always jealous of the kids with rich parents who got to ride around in their own Power Wheels cars. Now that I am tall enough to sell my body and time, I find myself attaining childhood dreams like buying my own Power Wheels car. I would not have chosen the Barbie Jeep given the choice, but 40 bucks on Craigslist is an amazing deal.
The Obama administration is moving to strengthen its ties with Persian Gulf nations whose geography and oil resources have already made them key players in U.S. defense and energy security.
So, when Christopher brought up Nikola Tesla in his very first post on Fear of Lightning, it got me interested in learning more about the man behind alternating current. There is plenty of info out there on the Internet, widely available for free, but sometimes it's just nice to have a book in your hands... or on your computer or mobile device.
I got hooked on origami sometime after Math Craft admin Cory Poole posted instructions for creating modular origami, but I had to take a break to finish a quilt I've been working on for a while now. It's my first quilt, and very simple in its construction (straight up squares, that's about it), but it got me thinking about the simple geometry and how far you could take the design to reflect complex geometries. Below are a few cool examples I found online.
Math Craft admin Cory Poole posted instructions on How to Make a Cube, Octahedron & Icosahedron from Sonobe Units, plus some great complex models in his article, How to Make a Truncated Icosahedron, Pentakis Dodecahedron & More. These models use the standard sonobe unit and a coloured variant.
Last week Math Craft admin Cory Poole demonstrated how to make three of the platonic solids from Sonobe units: the cube, the octahedron, and the icosohedron; but where was the dodecahedron? I was pushed to find out how to make a sonobe dodecahedron from this beautiful picture (below) that Rachel Mansur posted on the corkboard.
As many of you may have noticed, nearly every Google product (i.e. Gmail, Google search, etc.) has gone through a bit of a makeover since the release of Google+. Big blocky buttons and enormous font sizes are apparently the thing of the future, and with a cool JavaScript hack, you can have a goofy YouTube, too! Now, I'm actually just being a bit facetious, the new YouTube is really the only thing that I like out of all of Google's recent redesigns. It looks pretty sleek.
The hammer and dolly method is probably the easiest repair technique for dents, but it requires that you have access to both sides of the panel being repaired. However, newer cars have many areas that do not allow you to use the hammer and dolly method. There are two techniques when using hammer and dolly—hammer off dolly and hammer on dolly.
Binding off on double-pointed needles is the same as binding off on a straight needle. The difference is is that you have to be very careful as you work on each needle.
Adding color on circular needles is as easy, if not easier than adding color on a straight needle. You can use this method for knitting stripes or simply just changing from one color to another.
