Principle Characteristic Search Results

How To: Make a Self-Watering Greenhouse

I've been hell-bent on complete self sufficiency for a long time now. There was a point where I was living in a self-sustaining community in the mountains in Colorado, and we had a very large greenhouse there. Dragging the hose around to water plants was a real pain, and that stuck in the back of my mind even after I left the place. It would have been much easier to integrate watering into the frame at construction time than doing that hose dance every day.

Receipt Racer: A Paper and Laser Tangible Video Game

Video games have been a purely digital medium for some decades now. They exist in the electronic nether, embedded on discs and projected on screens. Since digital distribution has gained popularity, even the physical manifestation of the game disc is going away, leaving games (especially digitally distributed indie games) more ethereal than ever before. It is unclear whether this slightly unsettling fact was on the minds of the three people who made Receipt Racer, but regardless, it stands as...

How To: Make Your Own Roman Sahdes

Making Your Own Roman Shades Are you an everyday Martha Stuart? You know, one of those do it yourself creative people who can make better household items than you can find at the store. It so, I found a great (quick to the point) video that will help you design and make your very own set of Roman Shades.

News: Möbius Pasta + Jell-O Jigglin' at 6200 FPS

Food is the meeting place of left and right brainers: Culinary arts call for creativity, but is also deeply rooted in the What, Why and How of basic science—baking powder vs. baking soda, the rising of dough, the falling of a cake, etc. Below, two plays on left brain principles—the Möbius strip and the law of gravity—both executed with right brain flair.

News: Zoetrope + Bicycle Wheel = Cyclotrope

Kudos to student Tim Wheatley, who came up with this incredibly nifty DIY animation using a bicycle wheel, cardboard cut-outs, and wire to create a magical reinvention of the classic zoetrope, Earth's earliest form of animation (it first surfaced in China around 180 AD!). Simply give it a spin, and the animation comes to life. Inspired to make your own? First, learn the basic principles of the zoetrope here or here. Next, take a little advice from Tim to add the "cyclo" element:

News: Building a Bonafide Solar Death Ray Sounds Too Easy

Eric Jacqmain is one smart cookie. Borrowing from the same principles of Archimedes’ mythological death ray, the Indiana teenager used an ordinary fiberglass satellite dish and about 5,800 3/8" mirror tiles to create a solar weapon with the intensity of 5000x normal daylight. The powerful weapon can "melt steel, vaporize aluminum, boil concrete, turn dirt into lava, and obliterate any organic material in an instant."

News: Metal Isn't Flammable... Right?

Theo Gray of Gray Matter explains the principle behind sending steel up in flames- as long as it's steel wool, of course. The process is beyond simple. Spend 2 bucks and 2 minutes: purchase a steel wool pad, hold in pliers, light with a match. But the question is, why is steel wool flammable, while other forms of metal are not? Explanation below the video. Theo says:

How To: Handle and restrain a mouse for injections

This Animal Welfare Foundation two-part video tutorial is from expert veterinary staff demonstrating the correct procedures for handling small mammals for clinical examination and medication. Its aim is to show that the primary consideration should be for the the welfare of the animal. This video guide will show you practical animal handling for a mouse.

How To: Learn why cereals go snap, crackle and pop

Food scientists have discovered why Rice Krispies make their characteristic sound when soaked in milk. The cereal contains sugar and is cooked at high temperature, which makes the sugar form crystals and creates air-filled cavities. When a Krispie absorbs milk, the capillary forces push the air to shatter the cavities' walls -- and make a noise. Learn why cereals go snap, crackle and pop.

How To: A/C Broke? Keep Your Car Cool with This DIY Solar-Powered Air Conditioner

If a solar-powered air conditioner that requires no electricity or moving parts sounds to good to be true, well, then you're not as ambitious as this clever high school student. Instructables user Fozzy13 put together an awesome DIY tutorial on how he built his own air conditioning unit in his car that works using the principles of evaporation, convection, and capillary action. This air conditioner works by using sunlight to heat air at the bottom of the unit. The hot air rises, allowing the ...

How To: Use a plunge wood router

If you're looking to rout, or hollow, out a length of wood as part of a DIY project, you'll need a wood router. In this handy tutorial, Darren Baensch reviews the three basic principles while walking you through a cut. Watch this video and learn the basics of plunge routing. Use a plunge wood router.

How To: Do Well on Your First Job Interview (For Students)

I know there are many students going for their first job that are new to the whole interview process. This is why I’m writing this article—to provide some tips on making your first interview experience simpler and hopefully successful. I’m currently in a university, but I had my first job when I was in ninth grade. I’ve held a few jobs and have undergone interviews many times. Sometimes they didn’t go so well, but I did learn from my mistakes. As I learned, I became better at interviews and s...

How to Make a Jacob's Ladder: Chained Lightning

In this article, I'll show you how to create a simple yet accurate demonstration of the "rising ionized gas" principle. In other words, a transformer, two metal prongs and lots of evil laughter. Remember those large "towers" in the background of Frankenstein movies with a "lightning bolt" rising upwards every few seconds? That's called a Jacob's Ladder; one of the coolest awe-inspiring demonstrations of high voltage. Here's a video of the final product: Materials and Tools

How To: Create Google+ RSS Feeds

Earlier last month, I wrote on how to subscribe to Google+ users using PlusFeed. I used it, and then I realized that I wasn't getting my own feed anymore. I discovered that the free service had been disabled due to cost issues, as detailed by the creator +Russell Beattie. The code is open source, and you can roll your own service, if you have the know-how and the time. If you don't, but still want to create RSS feeds for your own public posts, or just to track your favorite Google+ users, the...

News: Creepy Theremin Utensils Howl the Pain of Slaughtered Ghost Chickens

One of the creepiest musical instruments ever is undoubtedly the theremin, a device originating from the early 20s that emits eerie sounds with a just a wave of the hand. If you've seen the original movie The Day the Earth Stood Still, you know what I mean—freakishly creepy. Playing the theremin can be off-putting for some, since it's a relatively pricy gizmo, but a new geek gadget called the EaTheremin aims to make all of us professional, dinnertime theremists.

News: If the World Were Made of Pixels...

Texas based artist Shawn Smith brings the digital world to reality with his woodcut pixelated sculptures. The combination of a traditional material (wood) with a contemporary concept results in surprisingly fresh work. Plus, the craftsmanship appears to be impeccable. Check out his artist statement below.

How To: Use the GasBuddy Mobile App to Find the Cheapest Prices in Town

Gas prices across the United States have skyrocketed, with today's national average for regular unleaded gas at $3.51 a gallon, with California leading the pack at $3.90 a gallon. AAA reports that last week's national average was just $3.37. That's a $0.14 increase in just one week! Just one month ago, the average was $3.12. A year ago—$2.75 a gallon. Actually, the U.S. Energy Information Administration (EIA) states the price of gas hasn't been this high since since 2008 when it hit $3.57 in ...