Neodymium

Apple AirTags are super helpful for keeping track of your keys, backpack, and other frequently misplaced items, but there are some pretty clever things you can do with them beyond finding regularly used stuff. Apple sells its smart trackers — small, circular white discs 1.26 ...more

SentrySafe puts all sorts of measures in place to protect your valuables and important documents. This particular SentrySafe has an electronic lock, four 1-inch bolts to keep the door firmly in place, pry-resistant hinges, and it's able to withstand drops of up to 15 feet. Tha ...more

Back in 2007, YouTube user HouseholdHacker posted a parody video on how to make a high-def speaker for under a buck. MythBusters took on the challenge and busted it. Although that particular method doesn't seem to work, that doesn't mean you can't make your own speaker for le ...more

In my second article of the laser weapon series (see the first part here on CO2 lasers), I'll be expanding on the potential of pulsed lasers. I'm sure most everyone has seen those green and red laser pulses on Star Wars. Theoretically, those lasers could be built using a conc ...more

In a previous project, I showed how to build an electrical Jacob's ladder using an old microwave oven transformer (MOT). In this project, I modified the secondary coil on the MOT, which converts it from a high voltage/low current device into a low voltage/high current metal me ...more

It's best known as a children's toy, but kids aren't the only ones who can appreciate the unique and marvelous properties of Silly Putty. It's an incredibly fun silicone polymer that almost seems like a scientific anomaly, thanks to its viscoelastic non-Newtonian flow. This am ...more

Valentine's Day is almost here, and if you're like me, you're scurrying to do something special for your mate. The standard chocolates and flowers just isn't cutting it anymore, and you can only make so many homemade cards before it becomes banal and meaningless. So, what can ...more

Scenario: it's late at night, the roads are completely empty and you are stuck at the longest light ever. Solution: don't run a red- change it to green yourself. Avoid a ticket, save yourself some time (and perhaps a little gas). Many of you may have already seen Kipkay's ins ...more

Homopolar motors tend to be typecast as simplistic in nature, and that's true for the most part. The bare minimum requirements are a battery, conductor, and magnetic field, but when it comes to Valentine's Day, they're nothing short of complex. At least, when it comes to the ...more

With the explosion of food blogs in the last couple of years, there are more recipes available at the tip of your fingers than ever before. Craving chocolate chip cookies or Sriracha-flavored anything? You're guaranteed to have several thousand versions to choose from. So that ...more

Maglev trains. Why are they so cool? Well, for starters, they float. The idea of levitating trains have been around since the '60's.  The first commercially available levitator was introduce in 1984, Birmingham, England. The fastest known floating train is Japan's JR-Maglev, ...more

In 4.74 seconds, I can barely bend over to tie my shoes, and somehow this guy managed to crush the human world record for solving the Rubik's Cube in that time exactly. Update: Rubik's Cube World Record Gets Beaten... Again. New Record Is 4.737 Seconds! Video: . Mats Valk, a ...more

With 2015's generation of flagship smartphones fast approaching, LG is turning to virtual reality to clear its G3 inventory. VR for G3 is a Google Cardboard-inspired virtual reality headset that was custom fit to encase the phone and uses a pair of lenses to create stereoscopi ...more

Phone in one pocket, wallet in the other? It's the classic combo guaranteed to give you more pocket bulge. But it's 2024. Half that stuff in your wallet is practically antique. It's time to finally ditch all the dead weight and get a MagSafe wallet for iPhone — and we've got t ...more

When you're listening to music, there shouldn't be anything distracting you from total immersion. That means the only cords you should be dealing with are the crystal clear chords of your favorite song. You should be able to listen to high-quality music without the distraction ...more

What's worse than trying to hear your music over the sound of someone else panting at the gym? Or maybe you're getting really into a movie, and it's finally at the moment everything has been building up to when a car alarm in your parking lot suddenly goes off, and the moment ...more