Writing secret notes with lemon juice was one of my favorite pastimes as a child. All it took was a small flame to lightly scorch the paper and reveal the hidden message. Now that I'm tall and pay bills, lemon ink just isn't exciting enough anymore. Luckily, we can use another kind of invisible ink to write in fire! By using the saltpeter, we can whip up invisible fire ink in no time.
Jet engines combine oxygen from the surrounding air with on-board fuel to burn at very high temperatures and create thrust in the direction of the flame. Rockets, which we will learn about in a later post, are similar but carry oxygen internally and can therefore function in space!
Have you ever wondered how credit card numbers work? I mean, how they really work? How do they come up with the numbers? Credit cards actually follow a very specific pattern. Let's take a look at how they're set up.
When it comes to social engineering, Null Byte is here to show you how it's done. Social engineering is the key fundamental to unlocking tons of possibilities and opportunities in your everyday life. So, what is social engineering? Social engineering can be called many things. It's taking nothing and turning it into something. It's taking the bad and making it good. Above everything else, it's the art of manipulating the world and people around you—coercing that salesman into giving you a low...
Just installed the new iOS 5 on your iPad, iPhone or iPod touch? There's a lot of great features to check out and play around with. After messing around with it on my iPhone 4 for a few minutes, these seven additions caught my attention. Check them out below—and tell us what your favorite new features are in the comments below.
Well suited for loft living, Studio Gorm's Flow Kitchen offers an extremely eco-friendly and efficient solution to all your daily actions in the kitchen. The Netherlands based design studio focuses on three major areas: Waste, Water and Energy. My favorite element? A cutting board that sits above a compost bin. Slide it forward, and sweep your scraps right into the (eco-friendly) trash.
What is the best way to level up? My answer to you is all about the calves! They're all over the feed, free to collect, and usually easy to get as there are 10 per post available. I've been collecting calves for a a long time now, because they have the best coin collect rate per day, but tonight I did some more math that proves their awesomeness!
What Hand Do I Read - And Why ?This is the first tumbling block for some budding palmists, so let me give you some real begginning tips.
What Am I Doing???? Last night, I was reminded on the negative impacts of striving for perfection. It's not possible to be perfect. We describe many things as being perfect. IE, an afghan, a hat, a tablecloth and more over, there is always something better... a different colour, a slightly different pattern, and so on. As time progesses, the colours we choose this fall might be the OUT colours of next fall.
Serious Eats' Burger Lab offers an extensive guide to making sliders at home. For those who have not sampled the beloved American classic, a slider is NOT just a mini hamburger. Nope, there's much more to it than that.
The PlayStation Phone is almost here, and the hybrid device from Sony Ericsson is rumored to have Android 2.3 (Gingerbread) as its mobile OS. YouTube user xxmajstor managed to get his hands on what is said to be the Sony Ericsson Zeus - Z1 PlayStation Phone. Below is the spy video of the device in action.
Ever wonder how to cast on with work in progress when knitting? Well, wonder no more with this knitting demonstration video!
To use an applique foot for a sewing machine, select zigzag stitch with very short stitch length 0.30 to 1, width of 1.5 - 4.0. Loosen tension to about 3. Transfer pattern to paper side of fusible backing. Mirror all letters or numbers. Iron fusible backing onto applique material, cut out designs and remove paper. Position applique pieces and iron onto base fabric. Place stabilizer under applique area. Over stitch all edges to prevent fraying. Use
They can be called wash rags, wash cloths or dish cloths. There are lots of different patterns for them. Here's an easy washcloth that incorporates the Stockinette Stitch with Seed Stitch edging.
These measurments should be taken and recorded before drawing up you clothing design pattern. Wear the bra and panties you will be wearing with the final garment. Another option, especially if you are going to be selling a series of the garments, is to follow a size chart. While sizing is not very standardized in the clothing industry, I like the charts on the Burdastyle website which are in both inches and centimeters. When measuring, the tape measure should be neither too tight nor too loos...
In this series of arts & crafts videos you’ll learn how to create beautiful glass mosaic art. Expert artist Kathleen Dalrymple shows you the artistic process in easy to follow, step-by-step instructions. She’ll show you all the tools, supplies and materials you’ll need to get started, how to methodically break glass into pieces you can use, and how to arrange the glass into patterns and designs that match your inspiration and imagination. Once you’ve got the basics down, you’ll want to develo...
Ever wonder how all of those tiny chips and components can fit inside your laptop or smartphone? If you tried to squeeze them in there yourself, your laptop would quickly become too heavy for your lap, and your mobile phone would need wheels to stay mobile.
Three-dimensional printing is one of the many wonders of modern technology. It's the first step towards real life Star Trek replicators and Timeline-esque teleportation chambers. While we aren't at the level of reconstructing strands of DNA, it's already possible to make tons of fun and useful designs on a 3D printer.
Last time we took a look at some of the creatures of the pond, including the dragonfly nymph. Today, we examine the all-grown-up dragonflies in the field you are used to seeing on summer days! Dragonflies are not dangerous, but the extra large ones can bite you something fierce if you handle them wrong.
Welcome to Minecraft World! Check out our tutorials, post to the community corkboard, and come play on our free server!
This morning, I received a message from a friend who was reading a hack log, and she had some questions about the commands used. This got me thinking, as Linux has a ton of commands and some can be archaic, yet useful. We are going to go over everything you need to know to read a hack log and hopefully implant the steps in your head for future use.
With the mass arrests of 25 anons in Europe and South America, and the rumors of an FBI sweep on the east coast of America floating around, times look dicey for hackers. Over the past few days, a lot of questions have been posed to me about removing sensitive data from hard drives. Ideas seem to range from magnets to microwaves and a lot of things in-between. So, I'd like to explain a little bit about data forensics, how it works, and the steps you can take to be safe.
Welcome to Minecraft World! Check out our advanced tutorials and come play on our free server. Real time redstone clocks are a marvel of redstone technology. Not only can they keep track of time, they are capable of powering other more complicated redstone machines. Regardless of whether a redstone clock runs a ten second or twenty-four hour time span, they operate on the same principles, which can be easy and straightforward to understand.
Last Thursday's post demonstrated how to Make Yin-Yang Pillow boxes, which were based on equilateral triangles and squares. The units for making these boxes were created by Phillip Chapman-Bell, who runs an amazing origami blog and has a spectacular flickr photostream. Using these units, you can make also make 4 of the 5 platonic solids. I made an additional template based on the regular pentagon so that the dodecahedron can be built completing the set.
It's once again Monday, which means it's time to highlight some of the most recent community submissions posted to the Math Craft corkboard. Since two of these posts were on polyhedral versions of M.C. Escher's tessellations, I thought we'd take a look at building a simple tessellated cube based off of imitations of his imagery.
It's Monday, which means once again, it's time to highlight some of the most recent community submissions posted to the Math Craft corkboard. I also thought we'd take a look at building a sliceform model of a hyperbolic paraboloid.
Welcome to Minecraft World! Check out our advanced tutorials and come play with us on our free server.
Last post, the Sonobe unit was introduced as a way to use multiple copies of a simply folded piece of paper to make geometric objects. In this post, we are going to explore that concept further by making two more geometric models. The first is the truncated icosahedron, which is a common stitching pattern for a soccer ball. The second was supposed to be the pentakis dodecahedron, but through systematic errors last night, I actually built a different model based off of the rhombic triacontahed...
Welcome to Minecraft World! Check out our advanced tutorials and come play with us on our free server.
It's another Monday, which means once again, it's time to highlight some of the recent community submissions posted to the Math Craft corkboard. Additionally, I thought we'd take a look at the Mobius Strip.
Nearly every game takes strategy to win, but when it comes to games like Scrabble and Words with Friends, you've also got to have a lexically inclined mind full of wonderful and weird words. Most start out by learning all of the two-letter words in the Scrabble dictionary, then work their way up to three-letter words. But where do you go from there?
No matter what word game you're playing, whether it's Scrabble or one of its near-homogeneous counterparts like Lexulous, Wordfeud or Words with Friends, one of the easiest ways to stay on top of your opponent is knowing all of the legal two-letter words you can play. You're not going to win by only playing two-letter words, but there are definitely occasions when the game could slip from your hands by not playing them.
The order was given months ago: Build me a royal garden.
Banksy, Cope2, Invader, Retna, Mr.cartoon, They all have a few things in common. Firstly, they are all extremely talented and well known urban artists. Secondly, they all have very memorable and very, very cool names.
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The holiday season is here, and if you didn't already pick up a SCRABBLE set during Black Friday or Cyber Monday, then you still have time to buy the perfect gift for your lexical-minded friend. There's sure to be deals out there over the next couple of weeks, you just need to browse the web and search store shelves for the best deal.
The worst can always happen. Even if you think you're absolutely prepared, you can somehow find yourself stranded in the middle of nowhere by yourself. It can happen. Without a map, without a compass, without a cell phone... without food and water.
The DIY industry is booming, despite the desperate blackmailing of society by finance capitalists. Companies like Adafruit and Makerbot are grossing well over a million dollars a year, and Evil Mad Science Laboratories just recently dedicated themselves to running a full-time kit business. Making kits is fun, but starting a business can be scary. If you already enjoy making gadgets and want to take the plunge into selling your own kits online, this article is for you.
Homemade circuits are amazing. You can build any kind of circuit on a simple perfboard, as we have seen in previous projects. However, some projects require very tiny circuit boards. We could special order some boards from a printed circuit board (PCB) factory, but that will most likely involve a high price per board and a few thousand miles of delivery service to pay for.
Welcome to Minecraft World! Check out our tutorials, post to the community corkboard, and come play on our free server!
