We highlighted a video by Bill Hammack earlier this year–How and LED-lit Monitor Works–and now we’re back to highlight another, how smoke detectors work. Watch the video above to see how radioactive material...
One element of lie detection, as carried out by lie detecting machines, is the measurement of galvanic skin response–how sweaty the questioned person becomes. This simple electronics project recreates that measure right in your workshop.
Xerox’s first commercially successful copy machine was introduced in 1959 and came with a feature you won’t find on many modern pieces of office equipment: a fire extinguisher to put it out when it–frequently–lit on fire.
It’s time to dig into the tips box and share this week’s reader tips. Today we’re looking at the iPad as a digital picture frame, recycling media spindles as cable caddies, and CTRL+Click to open links in MS applications.
If you’re freaked out by the revelation that your iPhone/iPad has been tracking every step you’ve taken since you updated to iOS 4, Untrackerd will put your mind at ease by actively deleting the tracking database.
If you’re rocking an iPhone, iPod Touch, or iPad–alas not iPad 2 yet–a new release from Redsn0w makes it dead simple to perform an untethered jailbreak.
Multiple monitors allow you to spread out your work, see more at once, and—ideally—help you get more done. This week we want to hear all about your multi-monitor setup and what tips, tricks, and tools you use to maximize its effectiveness.
The Gallery application on Android devices is a bit aggressive about scanning and adding directories. Have a directory you want to keep private? Use this simple trick to keep it out of the Gallery app.
Color blindness affects a significant portion of the population (5% of men and %.5 of women); game developers are finally noticing and tweaking games so success doesn’t hinge on whether or not you can tell red from green.
If you have an old web cam or two laying around you can convert them into a CCTV system that pushes email and growl notifications to you any time motion is detected in the area they are monitoring.
Craigslist is a great resource for scoring local deals but only if you’re adept at using it. Today we’re taking a look at tips and tools you can use to go from being a casual Craigslist user to a deal-scoring ninja.
YouTube user Photoinduction really loves playing with electricity and is always looking for new ways to put it to good use. In the video above he demonstrates how you can literally wipe the data layer right off a CD or DVD us...
Mobile apps are more popular than ever with individual apps boasting download counts in the millions and application sales breaking into the billions of dollars; take a peek at the phenomenon with this app-focused infographic.
Google Video is shutting down its hosting services as of the end of this month; users will be able to download their old videos until May 13, 2011.
You’ve got questions and we’ve got answers. This week we take a look at understanding allocation sizes, tweaking your right-click context menu, and changing the taskbar color.
Visit CraigsEasy, add the bookmarklet to your bookmark toolbar, and then any time you want to view a set of Craigslist search results in an easy to browse image-gallery format, you just click the bookmarklet. Watch the video ...
Smart Video Enlarger is a free Google Chrome Extension that automatically scales YouTube videos to the size of the browser window–or slightly smaller if you prefer to read the video comments along with the video.
Earlier this year Google launched the Data Viz Challenge–a five week competition that challenged developers to visualize how federal income tax is spent. Watch the video above for a sneak peek or follow the link below t...
You need to prop your laptop or tablet up at a comfortable angle but you’re not too excited about the idea of spending a lot of money on a stand. Fair enough, this study cardboard stand should do the trick.
Some people stack their networking gear on their desk, some people tuck it out of sight in the basement, and some people strip the cases off and frame it like art.
If the warm weather has you itching to open the garage door and get tinkering, this PVC didgeridoo–a 1,500 year old aboriginal instrument–is a fun (and noisy) way to kick off a summer of tinkering.
Every week we tip into our mail bag and share great tips from your fellow readers. This week we’re looking at an easy way to sync your bookmarks between IE and Firefox, using simple Windows toolbars, and a clever way to ID USB cables.