High Lighter

The Stun-Gun In this article, I'll show you how to make a small, weaponized highlighter. Before I get into how to built this device, let me warn you. This device is harmful! When used, it can cause burns and/or serious muscle spasms. The voltage is potentially deadly! DO NOT ...more

In this article, I'll be showing you how to make a simple yet effective static electricity generator. Basically, this device allows you to carry a constant static charge on your body and discharge it on anything grounded or of opposite polarity. The electricity generated is ar ...more

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 "lig ...more

In this article, I'll show you how to make a simple touch-triggered switch. This is very useful for various electronic projects, from a simple bedside light to a flat panel touch keyboard. The circuit can vary in switching power depending on the transistors you use. For exampl ...more

Piezoelectric Energy In this article, I'll show you how to make a small, wallet-sized device that generates electricity from kinetic energy. The concept is simple: Piezoelectricity is the charge that is produced when certain solid materials (commonly ceramic and crystal) in r ...more

What Is Graphene? Graphene is a very thin layer of graphite. Graphite is made out of carbon (the mother of all elements), and is normally used in pencils. Graphite is also used for brake padding in larger vehicles, the batteries in laptops or portable gaming systems, and in t ...more

In this article, I'll show you how to make a portable prank stun-baton. Powered by static electricity, simply charge up the baton, and discharge it for a static surprise. The concept behind this device ties in with Leyden jars, and their tendencies to retain static electricity ...more

In this article, I'll show you how to create a simple yet effective way of scaring off intruders. Of course, there are methods around this approach, but it's great for office pranks and general fun. The project requires a little background knowledge in electronics and circuitr ...more

In this article, I'll show you how to build a coil gun. A coil gun is a device that fires magnetic projectiles at high velocities, using electricity. Coil guns require no explosive propellant, therefor can be fired an infinite amount of time, providing that there is ammunition ...more

Fire.  It’s everywhere— always has been.  From the Ordovician Period where the first fossil record of fire appears to the present day everyday uses of the Holocene.  Today, we abundantly create flames (intentionally or unintentionally) in power plants, extractive metallurgy, i ...more

I am writing this quick post in response to the recent earthquakes and tsunamis that are affecting Japan. As soon as the news broke, and we began to hear of tsunami warning for our area, I immediately realized how under prepared I was for a natural disaster. The thing that dro ...more

Someday, maybe not today, maybe not tomorrow, but someday, you'll find yourself on the road in your car, maybe on the highway, and you'll hear something. With your air conditioning on full blast and your stereo so loud your ears feel like they are bleeding, you normally would ...more

Whereas yesterday's segment of Making Art on Your iOS Device focused on the technical elements of drawing from life, today we enter the painterly realm of David Hockney and Jorge Colombo. The apps below can be categorized under "painting"—or more accurately, the digital creat ...more

RHYOLITE 64 points (14 points without the bingo) Definition: a volcanic rock [n] Rhyolite is an igneous rock, which is one of the three main rock types, aside from sedimentary and metamorphic rock. It's also an extrusive volcanic rock, which is formed on the surface through ...more

How about a laser? One that is strong enough to nudge debris out of earth orbit. That's what NASA contractor James Mason wants to do, and his lab simulations suggest that the idea is possible. Mason wants to use a 5kW ground-based laser and a ground-based 1.5 meter telescope t ...more

“Of a generation who remembers Tiananmen Square, 1989, I considered how some excuse – the lack of, or slow progress on, human rights in China because ‘times have changed’, or because other concerns, including making money, come first, or because rights, freedom, and democracy ...more

A practice amplifier can be just about anything, but by definition it’s probably not something you are going to gig with. Getting Started If the amp is for practice, you generally don’t need a big one. Up to 15-watts is pretty standard, with 30 to 50-watts being about as big ...more

Look on any bistro or pub menu in America and you'll likely find the term caramelized onions as an option for your burger. The word "caramel" may conjure up images of candy, which is somewhat correct. When high temperatures are applied to certain foods, the sugars within them ...more

Mystery is a tricky thing. Used correctly, it can give onlookers the impression that wondrous and perhaps valuable things are afoot. However, once the veil of suspension of disbelief is removed in any significant way, that same mystery can quickly turn into not just skepticism ...more

In the last couple of days there's been a lot of speculation about the powers of Microsoft's HoloLens 2, but few have had a chance to get their hands on one to see if the company's claims live up to what HoloLens inventor Alex Kipman showed off on stage. Nevertheless, amid th ...more

Digital imaging company OmniVision Technologies and the Hong Kong Applied Science and Technology Research Institute Company Limited (ASTRI) entered the CES fray this week with a new reference design for an augmented reality headset capable of 60 degrees field of view (FoV). T ...more

Whether you are vegan, lactose-intolerant, or cooking for someone who is, standing before the non-dairy milk shelf in the grocery store can be daunting. Instead of playing it safe with the two most common milk alternatives—soy and almond—perhaps you should explore a few other ...more

The most annoying thing about Christmas lights is when one bulb blows, the whole string stops working. There's no easy way to tell which one is out when it's a huge strand, so it can take forever to fix. Mehdi Sadaghdar figured out that zapping the Christmas lights with a pie ...more

As exciting as it can be to crack open a beer, there's nothing fun about wandering around a party and asking other partygoers for a bottle opener. Don't worry, we've got you covered: here are 10 crazy ways to get to drinking while impressing your friends with your ingenuity. ...more

As one of the leading makers of processors for smartphones, Qualcomm further bolstered its place in the market with the announcement of the Snapdragon 865 earlier this week. On Thursday, the company took yet another step towards the future of augmented reality headsets and sm ...more

If there was a version of the Doomsday Clock for counting down the release of Microsoft's HoloLens 2, then the caretakers of that imaginary clock would move the minute hand to "one minute to midnight." On Monday, Alex Kipman, Microsoft's technical fellow in charge of the Holo ...more

Essay writing is the bane of most students' educational existence. Whether you're a college student tired of slaving away over 30-plus page research papers or a high school student just trying to get through AP Language, chances are you'd love to find a way to cut down on all ...more

Interesting reaction coke and milk The reaction of phosphoric acid (V) to proteins in the milk - they are cut and causes a precipitate The reaction of phosphoric acid with calcium contained in milk gives rise to a precipitate 3Ca + 2H3PO4 ///\\\ Ca3(PO4)2 + 3H2 It is a reacti ...more

One of my least favorite tasks is crouching in front of the kitchen oven or gas heater, and burning my fingers as I try to restart the pilot light with regular matches. I end up cursing the fact that I don't own extra-long matches or a stove lighter, but then I never go out an ...more

When you're on the go, it's important to keep your belongings organized and at an arm's distance so you're not fumbling in public for your keys, cards, or phone. The OtterBox Commuter Series Wallet is a protective smartphone case with discrete storage within the phone's case ...more

This week, the beginning of an epic legal battle was set to begin between augmented reality players Magic Leap and Nreal, the small China-based startup accused by the former of stealing trade secrets. However, a new wrinkle has emerged in the legal skirmish that could change ...more

In Guardians of the Galaxy Vol. 2, Mantis resides in the shadow of an Ego who considers himself the actual heart of the universe. But when it comes Halloween costumes? Mantis will be the center of attention every time. The internet sure has noticed Mantis, and it's abuzz with ...more

Apple caught a lot of flak for removing the headphone jack in their iPhone 7 models, but they definitely got the last laugh when preorders with a delivery date of September 16 sold out within minutes. Headphone jack or not, the iPhone 7 and 7 Plus are still highly desirable pr ...more

Taste is certainly relative. When you look at Central American architecture and notice all of the bright pastel colors, then move just a thousand or so miles to the north and see that buildings in the United States are mostly painted in earth tones, this becomes abundantly cle ...more

I love me some salad, but I'm also kind of a big baby when it comes to eating them. The greens have to be perfectly crisp and fresh, which is why I'm such a nut about storing them properly, including rethinking how I use my refrigerator, using a paper towel or dry cloth to wra ...more

Video: . Optimize your Marketing with a Mobile Website Most companies today have their own website. However, not all of them have a mobile-optimized website. Business owners who do not have a mobile website may have cause to be alarmed. This is because studies say that mobile ...more

Samsung just concluded their live unveiling of the Samsung Galaxy S4! A more in-depth look can be found here. Today's special live "Unpacked" event from Samsung Mobile is underway in New York City, where the much anticipated unveiling of the Samsung Galaxy S4 is happening. Yo ...more

TIFF 2012 Wrap-Up - Pounds Personally Gained: 4.5 For the first time ever, my favourite film was the same as the people's! The people, of course, chose Silver Linings Playbook as their favourite film of the festival, as did I. I was excited going into the fest about director ...more

For 2019, Sony is trying to shake its failures of the past and start fresh. Following the unsuccessful Xperia XZ series, Sony is changing the name of their flagship to a single number: Xperia 1. With the name change comes a few upgrades, one of which is its new look. Secondly, ...more

If waveguide display maker DigiLens has its way, enterprise businesses and consumers will soon be able to purchase smartglasses for less than $500 — as long as they can supply their own computing and battery power. On Monday, the company unveiled DigiLens Crystal, a reference ...more

Ever since the announcement of the Razer Phone, a wave of gaming smartphones started to hit the market. With ASUS being such a big name in gaming, it made sense for them to throw their hat in the ring. The result is the ROG Phone. And with this first try, ASUS has topped the r ...more

Connecting your devices with a cable is the fastest and most reliable way to transfer files between them. Now that most Android devices have either USB Type-C or a Micro-USB port that supports USB OTG, phones are capable of importing media files directly from a camera using a ...more

Winter—or any cold, gray day, for that matter—is the best time for a warm cup of something hot. For me, hot chocolate is my "warm cup" of choice: rich and milky, deliciously sweet, and oh-so-comforting. On super-cold days when I can't feel my face, a nice, large cup of hot ch ...more

Frosting, for many, is the best part of the cake. There's not much to dislike about it, after all—there's a type of frosting for every person. Whipped frostings for those who like it light, dense buttercream for indulgent sugar fans, cream cheese frosting for the tangy crowd.. ...more

Potato peels are largely misunderstood creatures. They're shucked away from every mashed potato dish like some icky rag that has no business in your kitchen. PS: Quit it. By ditching the peels, you're not only missing out on fiber and large amounts of potassium (even more than ...more

The season for outdoor activities and indoor heavy cleaning has arrived, and with that comes all the aches and pains of enjoying it. If you find yourself with sore muscles and no easy way to fix it, then a portable massager you can use whenever you're in pain is something that ...more

The OnePlus 7 Pro is definitely a beast on paper. With a specs page that ticks virtually every box and a price point that undercuts the competition by hundreds of dollars, it's hard to overlook this phone. But before you get too excited, know that OnePlus has repeatedly shown ...more

It's confession time. Through a couple of sources, I managed to get an early look at the HoloLens 2. But I was sworn to secrecy, and I take my tech oaths seriously (shame on you, leakers). But now that it's out in the wild, we can finally talk about how the HoloLens 2 looks c ...more