Nosebleed or the official term is epistaxis is bleeding from the nasal cavity. Nose bleeds are very common and are often caused by dry air, illness, or trauma. Learn more about the causes, symptoms and treatments of nose bleeds in this medical how-to video.
A tutorial of how to use EKTS.
Aspiring engineers, your challenge, should you choose to accept it, has been issued by Jaguar Land Rover.
Some bacteria can already do it—generate electric current, that is—and those microbes are called "electrogenic." Now, thanks to the work of a research group from the University of California, Santa Barbara, we know how to easily turn non-electrogenic bacteria into electricity producers.
The new USB Type-C standard was supposed to revolutionize smartphone charging, but so far, it's done more harm than good. Many cable and charger manufacturers are struggling to keep their products in line with the proper USB-C specifications, so as a result, we now have to check to see if a cable is compliant before purchasing one.
Those of you who have been a part of the Null Byte community for even a short while know that I sincerely and firmly believe that hacking is the most important skill set of the future.
Welcome back, my hacker novitiates!
What's a penny worth these days? Not much. But could there be some free energy hidden inside your spare pennies? You'd be surprised! See how I hack together stacks of pennies into makeshift batteries that can drive small-current devices like LEDs and calculators.
What's the first thing you would do once you realized you were lost in, say, a desert? If you're like me, you would immediately pull out your cell phone and start dialing every number. But what if you have no service? What if your battery is dead?
Gary Clark shows you what it takes to hang a beautiful new chandelier in your home, and believe it or not, the installation is simple! No matter what kind of hanging light fixture you're installing in your ceiling, the process is generally the same, where you first need to cut a hole in the drywall and run some wire to the panel. Then make sure you have a junction box that can support the weight of the fixture.
This video illustrates how to make a vase out of old light bulbs. Materials:
You can get an expensive ticket for driving with a busted tail light. But that's not all. Driving with a faulty brake light can be dangerous. Replacing the bulb is a simple task that takes only a few minutes.
This video is about a particular pool or snooker game shot technique called "Shooting or Going around the Angles." The presenter, with a alias name of 'Forcefollow', first describes a particular 9-ball pool game situation that would require this technique, using a computer generated picture image to show an overhead view of the pool table, with the pool balls in question placed at certain locations within the table and showing the various angle trajectories paths of the desired ball to be str...
Everyone seems to be talking about Elon Musk's new futuristic Tesla Cybertruck, the vehicle that either looks like a cool moon rover or an outlandish video game replica, depending on your tastes.
Augmented reality headset and software maker Meta Company announced today board member Joe Mikhail will serve as the company's chief revenue officer.
The headsets of tomorrow offer some amazing possibilities in both gaming and work, but what we've seen so far only begins to scratch the surface. The US Navy saw the potential to use augmented reality in a helmet to provide divers with an incredible amount of information we have so far only seen in Hollywood movies.
Ant-Man isn't one of the most famous Marvel superheroes. In fact, with the news of his individual movie came great doubt that the comic book legends could succeed in telling the tiny story of an oddball hero on the big screen. Yet with its humor and unique story, Ant-Man has become a hit movie in its own right—and the hero will most certainly make a hit Halloween costume.
Staying cool in the summer heat sometimes feels like it takes all the energy in the world. But what about a fan using no-cost electrical energy? If you're looking to keep cool during a power outage, or if you don't want to break the bank by running your DIY air conditioner all day long, you can use candlelight to power a fan!
Well folks, the dream is coming to life. While we still may be a ways away from mind control, the team over at Thalmic Labs has created the Myo, and with it, the power of the Force comes to motion control, so long as you use it wisely.
Volume markings on large pots and mixing bowls make life so much easier. They cut out the step of measuring and save you the trouble of washing measuring cups. However, there aren't many containers out there that actually have volume markers in them.
I don't like paying for repairs, and I don't like purchasing extended warranties. When one of my gadgets break, I perform emergency surgery and try and fix it myself. It doesn't always go well, but I've managed to resuscitate a few iPhones, an HDTV, an Android tablet, multiple MacBook Pros, and other gadgets seemingly on their deathbeds.
A lot of my hacks use salvaged parts from an old microwave, with the microwave oven transformer (MOT) being the most useful component.
Unfortunately, there are plenty of situations where having a can of pepper spray could come in handy. Even worse, in most of those situations your state of mind isn't really conducive to remembering important details like the facial features of the person who's trying to mug you, which means the police will have a harder time catching the culprit.
There are plenty of ways to create time-lapse photos and videos, but most of them are taken over the course of several hours. If you want to do a longer term shoot over several weeks or months, you'll need a battery that can last that long, and you probably don't want to leave your DSLR sitting somewhere for that amount of time anyway.
Inductive charging has been around since the days of Nikola Tesla, but it has yet to be integrated into a lot of popular devices. This is partially because it's slower and more expensive than methods that involve direct contact.
The cell phone may have replaced the pocket watch, but thanks to some clever mods and hacks, "old-fashioned" time telling is making a comeback. Smart watches that connect to your mobile device cannot only tell you what time it is, but also change the song you're listening to and let you know how many Facebook notifications are waiting for you. Frank Zhao, an electrical engineering student at the University of Waterloo, decided to do something a little different with his LED pocket watch. It h...
For his thesis at Design Academy Eindhoven, artist/designer Tuomas Markunpoika Tolvanen created this incredible chair using tubular steel cut into thin rings. How did he get them to stay that way? He burned them. His project is called Engineering Temporality, and the inspiration came from his grandmother whose Alzheimer's disease is deteriorating her health and memories. Once he cut the rings, he laid them over an existing chair, only partially covering it. The fire acted as a varnish, creati...
In the past few weeks, you've already learned how to make your bike light up at night with some DIY rim lights and handlebar lights. But how about something a little more functional? Instead of using those tedious hand signals (which drivers don't even understand), spruce up your ride with some do-it-yourself LED turn signals.
Riding your bicycle at night is dangerous on busy streets, especially if you've got no bike lights. In most states, it's illegal to ride your bike at night without any lights because drivers on the road won't be able to see you until it's too late. Plus, how is anybody going to notice your sweet ride without a little illumination?
If you ride your bike at night frequently, you've probably had at least one close call with a car, pedestrian, or some other moving obstacle because of reduced visibility. Not only is it dangerous to ride at night without lights, it's illegal in a lot of places. Make sure no one can miss you with these DIY handlebar lights from Becky Stern at Adafruit. What You'll Need
This is a complex process, but the guys at Graffiti Research Lab have armed you with detailed written instructions and this video on how to create a night writer. This is a more complicated version of their LED throwies that allows you to catch a tag in lights. You'll never need an airpline skywriter again!
One of the basics of electronics is knowing how an electrical current works. For this video, you will need a 1.2V battery, a lightbulb, and 2 copper wires. First, take the wires and attach one end of each wire to opposite sides of the battery. Have a friend hold the wires there, or tape the wires down. Then, take the unattached ends of the wires. Take one wire and touch it to the upper part of the base of the lightbulb. Take the other wire, and touch it to the bottom. The lightbulb should now...
Doing electrical work is one of the most intimidating tasks for a novice home repairman. But if you know what you're doing, the risk is pretty minimal. In this clip, Mark Donovan of HomeAdditionPlus.com shows us how wire a combo outlet with power.
With all those cables coming from your computer, printer and fax machine there is hardly any room to do your work. This how to video demonstrates how to install a cable tidy device to keep all those cords nicely organized.
Once again, Samsung has certified its flagship Note series with an IP68 rating. With this rating, the Galaxy Note 20 and 20 Ultra have some degree of dust and water resistance.
We're living in uncertain times. The sudden outbreak of the novel coronavirus and subsequent self-isolation of roughly half the world's population has led to a massive reorganization of the economy, countless layoffs, compromised security networks, and a variety of other significant disruptions that will forever alter the landscape of our daily lives.
The long guarded veil of mystery surrounding Magic Leap for years was finally lifted last year when the company revealed its Magic Leap One device.
A relay is an electrical component that works like a light switch, where it's turned on or off with an electrical signal. By connecting a relay to a Wi-Fi connected microcontroller like an ESP8266, you can build a connected switch that can be controlled from the web browser of any device connected to the same Wi-Fi network — all for just a couple of dollars.
You're minding your business when your Apple Watch taps you. To your surprise, the watch claims your heart rate dipped abnormally low. The news might come as a shock — especially if you have no history of a heart condition — but before you panic, you should take the time to fully understand what this alert is really saying and what you can and should do about it.
Cosmetics maker Coty is hanging an augmented reality Magic Mirror on the wall of its Bourjois boutique in Paris that will tell customers which shade of makeup will make them the fairest of them all.
