Communications Electrical Chemical Search Results

News: Everything You Need to Know About the New Samsung Galaxy S5

The Samsung Galaxy S5 was just officially announced at Mobile World Congress. The new flagship device will be available worldwide beginning April 11, 2014, including all major U.S. and international carriers. With over 200 million Galaxy devices sold to date, the S5 doesn't stray too far from the trend, at least not aesthetically. We've still got a high-grade plastic shell with perforated back covers, and four color choices at launch. Our highlights of the release event are as follows.

Hack Like a Pro: How to Create a Nearly Undetectable Backdoor with Cryptcat

Welcome back, my fledgling hackers! Awhile back, I demonstrated one of my favorite little tools, netcat, which enables us to create a connection between any two machines and transfer files or spawn a command shell for "owning" the system. Despite the beauty and elegance of this little tool, it has one major drawback—the transfers between the computers can be detected by security devices such as firewalls and an intrusion detection system (IDS).

How To: Use a corner sander

In this woodworking video series, our home improvement expert Jon Olsen tells you how to use the corner cat finish sander to smooth out the shop project you've been working on. He begins with an overview of workplace safety, covering work area safety as well as electrical and personal safety. Then he tells you how to identify individual parts and then how to selection the correct sanding pad for the job at hand. Don't know how to properly attach the dust bag?

How To: Use a chop saw

A chop (or miter) saw is a power tool used to make accurate cross cuts in wood, plastic, and light metals. It has a fixed blade, attached to a moving arm, that spins over a small worktable. The operator lines up the piece to be cut and drops the saw blade, allowing for quick, easy work. Watch this instructional video series, and decide if the chop saw is a tool you'd like to introduce into your workshop. Lessons include general safety tips, uses for the chop saw, replacing the cutting saw bla...

How To: Use a random orbit sander

In this series of instructional videos, expert Jon Olson demonstrates how to use a random orbit sander, including tips on how to create bevels, replace discs and brushes, empty the dust bag and general cleaning, care and basic maintenance of the tool. He also covers tool safety, including electrical safety, personal safety, such as wearing protective eye gear, tips for sanding paint and the importance of keeping your woodworking work space clean. Watch this free online tutorial and you'll att...

How To: Give a speech

Giving a speech in front of a large crowd doesn't need to be the nightmare everyone imagines it to be. We speak to many people every day and yet it is still very common for a person to be nervous when delivering information in front of several people. This fear can be overcome by practicing how to give a speech and being prepared.

How To: Give a funny speech

Would you like to be able to stand up at that next meeting or party and get your audience laughing? Learn how to give a funny speech from professional public speaker and communications instructor Tracy Goodwin in this free video series.

How To: Make Surface-Mount Electronics at Home for Smaller, Cheaper DIY Gadgets

Whenever we make a homemade circuit, we use what are called through-hole components. Any components with long metal leads is a through-hole component. They are great for soldering to, but it's tough to fit enough through-hole resistors and capacitors into a smartphone. To get those last microns, we have surface-mount components for SMDs (surface-mount devices). These are all of those teeny, tiny things you see when you crack open your digital camera or laptop case.

How To: This DIY Soft-Circuit Military Tech Lets You Power Electronics Using Your Clothes

It turns out that the popularity of soft circuit electronics has leaked out of the interwebs and into the hands of the U.S. military. Soft circuit electronics allow you to literally sew electronics circuits into fabric using flexible conductive thread instead of wire. Soft circuits can be used for all sorts of fun projects, like the TV-B-Gone Hoodie and the Heartbeat Headband.

How To: Clean Your Computer

I love my laptop. It goes wherever I go. Unfortunately, that means that it also gets pretty grubby after a while. The screen gets dusty. The frame gets smudgy. The spaces between the keys fill up with crumbs of questionable origins. And my desktop? That thing is a dust bunny magnet.

How To: Clean minerals and deposits from bathrooms

In this video series learn from Mark Williams a 6th year Registered Plumbers Apprentice with over 11,000 hours of experience as he discloses tips and techniques such as what chemicals to use to clean your bathroom; how mineral deposits build up; what causes certain stains to form; how to get rid of stains and deposits; how to prevent stains, deposits, and decreased functionality of your sink, toilet, and bathtub.

How To: Make a Homemade Sugaring Paste to Remove Hair

Unlike typical waxing, which strips your skin of vital moisture, causing inflamed, dry, and itchy skin as well as ingrown hairs, sugaring is a slightly gentler way of removing hair. Because it's all-natural, made generally of sugar, water, and lemon juice, it irritates the skin less because there are no artificial ingredients or harsh chemicals.

How To: A Hitchhiker's Guide to the Internet: Today and Now, How It All Connects

In the first part of this series, we took a factual and technical look at the history of the Internet. I explained how all of these wires and servers got here in the first place. Obviously, a firm did not just create and build the Internet around 1995! Now that we know how the Internet came to be, we can get into the really fun stuff—what the Internet looks like now! Well, that's not quite the network design I was talking about, but it does show what the Internet looked like back in 2007 befo...

How To: Install a ceiling fan

In these diy home improvement videos, learn how to install a ceiling fan in your home. Our expert will show you what to consider when choosing a fan, what tools you’ll need, how to turn the power off, electrical wiring tips, how to assemble the fan blades, how to add a light fixture, and other helpful hints you’ll need when installing a ceiling fan for the first time.