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How To: Create a PCB Etchant That Automatically Improves After Each Use

Etching your own circuit boards is tons of fun, but etching requires strong chemicals to dissolve the copper plating on blank circuit boards. The normal ferric chloride solution works well, but can be expensive and leaves permanent stains. Luckily, we can whip up our own etchant at home with everyday chemicals! Better yet, our new etchant will turn an eerie green color rather than the dull brown of ferric chloride.

Do Not Try This At Home: The Human Torch

PopSci's Gray Matter demonstrates again and again what the layman should absolutely Not Try at Home. Which is precisely what makes Gray's experiments so fun. Remember when the mad scientist fully submerged his hand in liquid nitrogen? Today's demonstration also plays with what is (quite reasonably) assumed to be extremely dangerous and painful: torching the human hand.

Master the Power: How to Make Fluorescent Tubes Glow with Your Bare Hands

I'm sure most everyone has some kind of fluorescent light source in their home; those long white tubes that emit a bright white light when turned on, or maybe a few of the CFL power-saver bulbs. These bulbs actually require very little "power" (i.e. a high voltage:almost no current ratio) to emit light. In fact, static electricity is enough to make them flicker. Inside these tubes is a gas, and when electricity flows through that gas, it gets "excited" and produces light.

How To: Teaching Nerds How NOT to Love with Silver Dollar Games

I am the sort of man whom game companies fall all over themselves to seduce. I'm sweaty, pale, awkward, and spend too much money on video games. There are many of us, especially among XBox 360 owners. We are the most stereotypically "gamer" group of console owners. The XBox 360 doesn't have motion control like the Wii or a blu-ray player like the Playstation 3. It just plays games really well. That's why hardcore gamers like me prefer it amongst all the consoles, and probably why Silver Dolla...

News: Bullet-Proof Silk Sheets

Enjoy rolling around at night in the sleek luster of silk? Also afraid of a mobster finding out you're rolling around with his cousin's wife? Solution: bullet-proof silk sheets. All you need is the strongest biomaterial ever found--Darwin's bark spider silk. So, grab a loom and start weaving.

News: Culver City Seido's Approach to Improving Your Fitness

The point of any workout is to stress your body and initiate an adaptive training response. Period. What are appropriate levels of stress necessary to achieve the adaptive response? In terms of the cardiovascular system, studies have shown that it usually takes about two minutes to get the heart rate into the training zone. Once there, the heart shows an adaptive response after five more minutes of training in the zone. Total minutes needed to get an adaptive response from your heart? Seven.

How To: Observe the Quadrantid Meteor Shower

Note: This shower is only visible in the Northern Hemisphere. The Quadrantid meteor shower is one of my personal favorites, mainly because of the amount of meteors it produces. You can sight more than 100 meteors per hour- that's more than 1 meter per minute. Even though that doesn't sound like much, it will make your observing experience much more exciting. The peak is short, typically lasting no more than an hour or so. It is more easily observed on the fourth, with its peak at 1:00 AM EST.

How To: How Much Advertising Can a Free Game Site Have and Still Be Considered Indie?

Mediocre free Flash game websites are all too common. Many of them thrive off peddling the same few popular games to fans who have slim cause to pick one over the other. They thrive off the indifference of casual gamers and an environment that does not have to stand out to survive, only appeal to the lowest common gaming denominator with tower defense clones and brightly colored Peggle knockoffs. In that context, what Nitrome is doing seems downright commendable.

TVs Are for Old People: A Guide to Handheld Consoles

Advancements in technology usually lead to the miniaturization of old technologies, and video games are no exception. Since at least 1990, game hardware manufacturers and enterprising DIY electronics enthusiasts have poured their efforts into making full-size video game consoles smaller, even handheld. And for good reason—who would have ever played a black and white Game Boy if they could have had an actual NES in their pocket?

News: So, Now What?

Fads, Fiascos and Good Stuff in FrontierVille This WeekThis is the first of what should, with luck, be a series of weekly columns.Fads firstIt’s St. Patrick’s Day in FrontierVille and it looks like staying that way for the foreseeable future, which will probably be about ten days. If you’ve ever lived in England you know about jackdaws, but I’ll explain for the rest of you. They’re small black birds who are notoriously fascinated by shiny things, and they love to peck the foil caps off milk b...

Making Electromagnetic Weapons: EMP Generator, Part One

In this series, I'll be exploring electromagnetic weapons, how to build them, their function and application to the future, and the amazing possibilities electromagnetism has to offer. First, the electromagnetic pulse generator, or EMP. You've probably heard of these before, and their devastating effects on electronics. A simple EMP consists of a capacitor, transformer, trigger, and coil of copper wire. This, when triggered, would produce an intense magnetic field for a brief period, similar ...

News: The aresnal of street art and grafitti (pt.1)

The very basic building block of street art is the tag. Although most people find them ugly, i just think that every artist needs to start somewhere, for street artists, its the tag. Firstly the tag is basicly writing your name, or whatever name you use for your art on a wall in a simple style. (although some tags can be quite complicated) The first step of a good tag is the marker that you will use to write it with. Tags can be sharp and clean, drippy and messy, thick, thin, simple or very e...

News: Richie Hayward Benefit in San Jose, August 13, 2010

DRUM! Magazine — the leading magazine for drummers and percussionists worldwide — has announced the biggest drumming event ever to take place in Northern California. On Friday, August 13, drummers will descend on the San Jose Repertory Theatre in the heart of Silicon Valley to witness three of the world’s most exciting drummers — extreme drumming sensation Marco Minnemann, Tower Of Power funk master David Garibaldi, and former Mars Volta wunderkind Thomas Pridgen — for an evening of mind-blow...

News: Gassho and Kokoro

At the beginning of every class, or almost every class, we do a series of exercises. The Japanese word for this sort of calisthenic exercise isundo. These exercises derive from the Goju style of karate created by Miyagi Sensei in Okinawa in the early part of the 20th Century. In devising these exercises Miyagi no doubt borrowed liberally from the Chinese, whose influence on the southernmost island of the Japanese archipelago was immense.

News: Millenium Challenge

In 2000, the U.S. Joint Command Forces, a sort of think tank within the military, began planning a war game named Millennium Challenge. The scenario of the game was as follows: a rogue military commander had broken away from his government somewhere in the Persian Gulf and was threatening to engulf the entire region in war. He had a considerable power base from strong religious and ethnic loyalties, and he was harboring and sponsoring four different terrorist organizations. He was virulently ...

News: Basic Math Operations

It was brought up a while back in a Community Call to Arms that *math* is handy for encryption (and let's face it, everything) so let us go over things you just have to know. "In its simplest meaning in mathematics and logic, an operation is an action or procedure which produces a new value from one or more input values."[source]

Dungeon Defenders: Heaven for Hardcore Gamers

Dungeon Defenders is the most exciting craft game on the Fall 2011 release schedule. I got a chance to play it at PAX in August and interviewed developers Trendy Entertainment last month. After more than a year of publishing difficulty and delay, the game finally came out on PSN, XBLA and Steam. I put about 20 hours into the XBLA version over the past weekend, beating all the campaign maps and racking up a huge pile of in-game money. It is not a perfect game. But it is a huge, challenging, an...

How To: Light Up Your Whole House with This DIY 'Nuclear Explosion' Chandelier

If you're the kind of person who misses the bright, sunny days of summer during the colder months, Michail has the perfect addition to your home. He built this "Nuclear Explosion" Chandelier that's as bright as daylight, so you can recreate the feeling of summer, no matter what time of year it is. It puts out 99,400 lumen (a typical 60W light bulb only produces 800 lm), so it takes quite a bit of electricity to run. Michail used 7 metal-halide lamps, which are much brighter and more energy ef...

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