Divide Large Numbers

In this first part of our tutorial series on making physical objects come to life on HoloLens, we are going to set up Vuforia in Unity. I would plan to keep a Vuforia tab open in your web browser throughout most of this tutorial, and when developing in general, since Vuforia ...more

Choosing which programming language to learn next can be a truly daunting task. That's the case regardless of whether you're a Null Byter just beginning a career in development and cybersecurity or you're a seasoned ethical hacking and penetration tester with years of extensiv ...more

Rational numbers can be written as a fraction or as a/b. The "b" in a/b cannot be zero because you can't divide by zero. an example is 1.5. 1.5 can be written as 3/2/ Irrational numbers are numbers that can't be written as a fraction. A famous irrational number is pi. You can ...more

Transmitted by a sandfly one-third the size of a mosquito, parasitic Leishmania protozoa are responsible for a flesh-destroying disease that kills an estimated 20,000 people per year. Two new studies offer understanding of how the parasite provides immunity through persistence ...more

Why can't I see who is stalking my Facebook profile? There are other social networks that do let you see who's viewed your profile, mainly LinkedIn and its "Who's Viewed Your Profile" feature. Regular users can see a recent list of who has been spying on you, along with some ...more

Recently, there have been some questions regarding networking popping up and we have decided to put together this series to try and cover this gap. In this guide, we will cover the basics of IP addresses, both internal and external, and begin to have a a look at how this wond ...more

In my last guide, I showed how you could crack the combination of any Master Lock combination padlock in 8 tries or less using my online calculator. Now, as promised, I'll be showing you how I devised the attack, which is based off the well-known technique that reduces the 64, ...more

Pasta is a ridiculously versatile food. You can have it with almost any kind of meat, vegetable, or sauce that you could imagine, and unless you throw in something totally bizarre, it usually tastes good. If you're really feeling fancy, you can even make dessert pasta. But wh ...more

On May 17, Apple announced that Lossless Audio playback for Apple Music was finally coming to subscribers in June. The long-awaited option will let users stream songs at a much higher quality than ever before. Still, in the fine print, Apple noted that you wouldn't be able to ...more

When we are building programs that communicate over a network, how can we keep our data private? The last thing we want is some other lousy hacker sniffing our packets, so how do we stop them? The easy answer: encryption. However, this is a very wide-ranging answer. Today we'r ...more

What Is Scale Factor? Scale factor is the ratio of the length of the scale drawing to the corresponding length of the original object. Solving Problems We are told to find the scale factor when we are given the original and new dimension of an object. The formula for questi ...more

If you have a taste for sweets, you have at least one thing in common with mosquitoes. While too much sugar is unhealthy for humans, a new product makes sweets deadly to mosquitoes. At a presentation at the 254th meeting of the American Chemical Society, in Washington DC, res ...more

Greetings, fellow NBers! Welcome to my sixth iteration of my sorting series. Today, we'll be discussing a personal favorite: Quicksort, or Quick Sort. Quick Sort: The Algorithm Under the Hood Quick Sort is what's called a "divide and conquer" sorting algorithm. It takes a p ...more

As practically the entire Steampunk world knows by now, IBM has predicted that Steampunk will be the big new trend from 2013 to 2015. They based this prediction on their computers, which sift through broad swathes of the internet in order to see patterns that may help commerci ...more

The year was 1947. Scientists had isolated a virus from a pyrexial rhesus monkey in Uganda and named it after the forest where the monkey lived — Zika. Then, a little more than a year ago, in the fall of 2015, health officials in Brazil reported a sharp increase in the number ...more

If you've been using Google's hidden App Ops to lock down and prevent some of your Android applications from exposing your privacy, then think twice before updating to the new Android 4.4.2 software. What Is App Ops? App Ops was Google's hidden gem that was built into the An ...more

Let's say you're using your iPhone's Calculator app, and you're knee-deep into a complicated calculation with many steps. You type in a large number, for example, "123,466,789," but mess up. You meant to type "5" midway through but accidentally typed "6" instead. The only thin ...more

When a photo or video is just too sensitive to leave laying around in your Photos app, you'll want to either delete it for good or hide it away in safe, secure location on your iPhone. As for the latter, Apple actually has a few tools available to make photos and videos hidden ...more

Crusty, itchy, red eyes? There is a decent chance you could have conjunctivitis, or pink eye, an infection of the thin lining around the eye and the eyelid, caused by bacteria, an allergen, virus, or even your contact lenses. Whatever the cause — you call up your doctor to get ...more

Voicemails are like chores for me. I have to listen to them, but never really feel like doing it. When I finally do, most of them get deleted right away, but every so often they'll be one I save and listen to over and over again, whether it's a cute birthday wish from grandma ...more

Phone numbers often contain clues to the owner's identity and can bring up a lot of data during an OSINT investigation. Starting with a phone number, we can search through a large number of online databases with only a few clicks to discover information about a phone number. I ...more

While the Apple Watch does have up to 18 hours of battery life each day on a full charge, your results will vary depending on how often you use it and what you're actually doing with it. If your Apple Watch isn't lasting all day long, we've got some battery-saving tips you ca ...more

Fast maths tricks! Video: .

The top five apps of the 2010s were all social media apps of some kind, and the fact that's not surprising to you says a lot. We may use them for other reasons here and there, but our phones are social media machines at their cores. The thing is, some make better machines than ...more

Hello there! This will probably be the final tutorial on functions where we will be looking over a method called pass by reference. This technique allows us to modify large amounts of data without the overhead and return multiple values. Let's go! Passing by Value Until now, ...more

Imagine you're in Paris and you need to get to Versailles. Looking around for directions, you come to a cold realization—you do not speak a lick of French! How are you going to get to Versailles and what happens if there is a detour? It will be a difficult struggle, and you'd ...more

No matter how many camera improvements a phone adds, you're always better off using manual mode. Known as "Pro Mode" on the Galaxy S20, this feature can remove Samsung's pre- and post-processing from photos, putting you in total control. At first glance, manual mode is intimi ...more

The International Space Station is a habitable man-made satellite currently in orbit around the Earth. Launched in 1998, the ISS is used mainly as a microgravity and space environment research laboratory where astronauts perform experiments in large variety of fields, includin ...more

I know it seems a little redundant to post this when I've already posted a video, but it is kind of hard to get more than a vague idea from the video alone. I hope this sheds a little more light on the subject. I'm sure it also seems like I'm beating this idea to death, but th ...more

How much do the producers of Lonely Girl make? How much do the producers of American Idol make? How much does COPS cost to make? I decided to share what I have learned for the CES audience in Vegas. I (Stephen Chao, boss of Wonderhowto)  gave a speech at CES yesterday.  The q ...more

The reasons for donating surpass much more than the direct and obvious benefits (ahem...taxes). Charitable donations are a direct reflection of your values and perspectives, not only improving your self worth, but can bring about unintended advantages. While at times it may n ...more

Shopping at a thrift store can be a fun adventure, a daunting task, a way to save money, or a combination of any or all of those. There's no question that buying secondhand is almost always cheaper and buying at a thrift store undoubtedly so. But it can also be a lot of work. ...more

Most packages sent to you via delivery services include a tracking number that allows you to track it from the creation of the shipping label all the way to your doorstep. The U.S. Postal Service includes tracking information with many of its mailing services, but not for firs ...more

The developer community has already made some incredibly quick progress on implementing assemblers, interpreters, and emulators for the proposed virtual computer in 0x10c, Notch's latest game. But the truth is that the majority of programmers out there couldn't be bothered wit ...more

The airline is not your friend. It will do anything it can to gouge your dignity, time, and most of all, money. One of the biggest scams to get a few extra bucks out of you are those dreaded baggage fees. If the lines, security, "random" screenings, and unwanted fondling aren' ...more

While some researchers look for drugs to treat HIV, other scientists delve deep into the virus itself for answers on how it causes infections. Using two supercomputers, University of Illinois research scientist Juan R. Perilla and late physics professor Klaus Schulten simulat ...more

There's a little-known secret in the world of microwave ovens that even the manufacturers don't care to tell you in their manuals. And once you know it, you'll never go back to using your microwave as you used to. Some microwave owners have figured this "hack" out on their ow ...more

A lot of people still trust their web browsers to remember every online account password for them. If you're one of those users, you need to adopt a more secure way of managing passwords, because browser-stored passwords are hacker gold mines. With a USB Rubber Ducky and physi ...more

Whether it's for health reasons or just to look better, many of us want to get in shape. It's a long process that starts with nutrition, and dieting is never easy. Fortunately, there are some great food-tracking apps that will make it a lot easier to become a healthier version ...more

Are you interested in selling your products at the local Farmers Markets? Many small mom and pop food crafters get started selling their artisan breads, homemade cakes, cookies, pies, biscotti, candy, seasoning mixes or regional barbecue sauces direct to customers who visit lo ...more

On its quest for online domination, Amazon.com continues to expand past its basic web marketplace to fulfill the needs of everyone and anyone with a little cash to spend. First, they battled the likes of Barnes & Noble and Borders Books with their online Kindle eBook shop. Ne ...more

Eating fire is a guaranteed method of not only impressing an entire room, but also instantly settling any questions as to whether or not you're a complete and total stone cold BAD ASS. When you can casually whip this trick out in a bar, you're not only going to get your drinks ...more

This coming Friday, November 11th, 2011 is Veterans Day and everybody's celebrating! But only veterans and active military personnel can get the great deals being offered at restaurants and retail outlets across the country. If you need help locating some of those deals, below ...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

Most of the time, when I’m bored during math class, I play with my calculator to satisfy my boredom. Recently, I've discovered that when multiplying any number by 11, 111, or any number similar to it, that it has a pattern (though I guess everything in math has a pattern). I d ...more

This method is easy, intuitive and requires very little math. You will need: Any flat flexible sheet material (ex. paper plates for this how-to) Pencil or pen Scissors Stapler, tape, glue or fasteners Ruler or straight edge Protractor Flatten Plates Flatten the paper plate ...more

You've had a massive hard disk failure.. ...in your PC or laptop and like a large number of people who think it will never happen to them...you did not have a backup of those 2000+ family pictures, those hundred of important Word documents, those family videos that you downlo ...more