Calculating resistance and power isn't hard... and, as David explains, knowing Ohm's Law and the Power Triangle can be darn useful when you're designing a project, sorting out power supply issues, or want to keep from burning your car down.
The first video introduces the basic electrical quantities of charge, current, voltage, and resistance. The concept of quantities and units is explained. The units of Coulombs, Volts, Amperes, and Ohms are described. The three basic formulas of Ohm's Law (E=IR, I=E/R and R=E/I ...more
This video teaches the basics of Ohm's law, which is an important equation in electrical engineering. The three variables which are used in this equation are V, which stands for voltage, I for current, and R for resistance. The equation for the law itself is I=V/R. This law de ...more
The U.S. Circuit Court of Appeals for the District of Columbia has demanded that the TSA explain why it has ignored a now year old order to conduct a public comment process with regards to its use of so called naked body scanners. » Court Orders TSA To Explain Why It Continues ...more
If you didn't think you could make a high speed photography trigger or hack together some creepy googly eyeballs for Halloween, then you've got another think coming, because learning how to use Arduino just got easier thanks to Jody Culkin and her wonderful comic book introduc ...more
Mr.G in the episode 3 of "Summer snow fall" explain the experiment for eddy currents and lenz law by using general house hold items like copper tubes of different dia., 2-neo themium magnets attached together and a ball bearing magnet. At first he took the big diameter copper ...more
If you've ever rooted an Android device in the past or installed a custom recovery, you're surely familiar with the term "unlocked bootloader." But if all of this sounds like gibberish to you, some major changes in Android have made it to where you should definitely get famili ...more
There's a lot that goes into making a nice crystal radio set, so this is going to have to be broken down into two parts. The first part is the actual making of a functional radio, and the second part is making the whole arrangement look nice. In this part, I'm actually going t ...more
Math scares a lot of would-be electronics lovers away from the field, and if you really hate math this is probably the video in this series where you stop. It will teach you how to use Ohm's Law to calculate resistance and how that applies to a basic circuit.
Watch this educational how to video to review Ohm's Law. This math and physics concept is derived from electric motive forces, intensity of current flow and resistance values of conductor. Watch and learn more about Ohm's Law.
This video introduces the formulae for watts in an electric circuit, P=IxE, P=I^R, and P=E^/R. It also explains how P=I^R and P=E^/R are algebraically derived from P=IxE and Ohm's Law.
Want to know about Newton's three laws of motion and how they affect aircraft landings? NASA has answers. NASA, aka the National Aeronautics and Space Administration, tells how Newton's laws apply to landings. There's no better place to learn from than the juggernaut of space ...more
NASA -- the National Aeronautics and Space Administration, the United States government's most infamous agency, the powerhouse of space exploration -- teaches you the basics of Isaac Newton's Laws of Motion. Who better to learn motion theory from than NASA? This NASA video se ...more
Google is the biggest and best search engine on Earth, and if you are a webmaster and want your website to be a big success it would really behoove you to know as much about how it works as possible. The Google Webmasters series of videos and website were created to teach webm ...more
Learn what happens during an aircraft rollout from the National Aeronautics and Space Administration, more commonly known as NASA. They spill the goods on Newton's three laws of motion and how they affect the rollout phase of landing airplanes. Learn from the master of space e ...more
In this video, learn about aircraft flares from NASA. The National Aeronautics and Space Administration provides valuable information about Newton's three laws of motion and how they apply to aircraft landings and what happens when mistakes happen (flares). This NASA video se ...more
This video explains and provides examples for the law of tangents, a law occasionally used in trigonometry.
In the first video, you'll see how contact between different materials can result in attraction or repulsion. Experimental results are discussed that led to Ben Franklin's one fluid theory of electricity. It explains how clues were found from rubbing different materials togeth ...more
Learn the basics of airplane landings and how Newton's laws of motion apply. NASA -- the National Aeronautics and Space Administration, gives this quick, informative video on Newton's laws pertaining to aircraft landings, specifically the approach. The powerhouse of space expl ...more
Learn everything you need to know about Newton's third law of motion from none other than NASA. The National Aeronautics and Space Administration is the United States government's most infamous agency and powerhouse of space exploration. Why wouldn't you want to learn Newton's ...more
The second law of motion. Force equals mass times acceleration. F=MA. Learn the facts about Newton's second law of motion from the National Aeronautics and Space Administration, otherwise known as NASA. The United States government's most infamous agencyand the powerhouse of s ...more
Demystify Newton's first law of motion with none other than NASA -- the National Aeronautics and Space Administration. The United States government's most infamous agency and powerhouse of space exploration teaches you the law of inertia… Newton's first law of motion. This NA ...more
Daniel Martin, a magician and escape artist, explains his technique for getting out of thumbcuffs. Disclaimer: We're pretty sure it's not illegal to know HOW to escape from thumbcuffs... but we're 100% sure it's illegal to actually escape when detained by law enforcement (jus ...more
If all things go well, you'll only have to take your road test once. That's the goal: to ace your test on the first try and then start driving on your own. Granted, it's a nerve-racking experience, but keep in mind that the California Department of Motor Vehicles wants you to ...more
This video explains how to apply the 7th Law of Exponents. The principal rule explained here is that "To raise a quotient to a power, You can multiply each of its terms by the same power". This is a simple rule explained clearly with the help of a couple of examples, which is ...more
In this tutorial the author explains the concept of Newton's Second Law of motion which states that force is equal to mass times acceleration. So the equation to compute force F is F = m * a, where m is the mass of the body and a is the acceleration produced by the force on th ...more
Having trouble dividing exponents? Doug Simms from Free Math Tutoring provides an excellent tutorial on applying the 2nd Law of Exponents. If you need to know how to divide polynomials, watch this video covering easy to follow examples explaining and demonstrating the 2nd Law ...more
If you're an electrical engineer, you needn't worry about this educational video, but if you aren't... Watch this tutorial to see how to use an oscilloscope and function generator. Learn all about how to use one of these oscilloscopes with this brief introduction to its work ...more
Got a knack for speeding? Like running red lights? Believe or not, the police have better things to be doing than pulling you over, like catching real criminals. That's why more and more cameras are popping up at known speeding zones and on street corners—so the cops can clean ...more
Who says nothing productive ever came out of doodling? Certainly not the hacker responsible for this fun (and at least somewhat functional) paper-and-pencil touchpad, which takes advantage of the natural conductivity of graphite: There isn’t much to explain here. It just uses ...more
NLP Lie Detector Eye Accessing Cues Explained. This technique is used by the Federal Law Enforcement Training Center FLETC.
In this five-part video tutorial series, you'll learn the fundamentals of working with electronics. To follow along, you'll need a 28-280 Electronics kit from RadioShack. You can skip to lesson 1 if you (a) have experience with a bread board and caring for electronic chips, ( ...more
At a very early age, I would go on summer camping trips. I remember every night being handed a pack of sparklers that were my own, to swing around wildly, which gave me many valuable life lessons on cause and effect. My curiosity with fireworks grew continually throughout my ...more
In this video, Robert Ahdoot becomes "surfer dude" and shows us the ways of deductive reasoning, as relating to geometry. He begins with a simple example of a syllogism, taking two premises and using them to form a conclusion. This is called the Law of Syllogism. This concept ...more
In this video tutorial the author explains the concept of 1st Law of Exponents using an example. He shows that when we add polynomials the exponents does not change but when you multiply two polynomials their exponents change. He says that the new exponent is the sum of the fi ...more
In this video the tutor explains the 5th Law of Exponents. He reminds the viewer that when polynomials are multiplied, their exponents get added. Now he states that when a polynomial is raised to another power, the exponents are multiplied instead of adding. The 5th Law of Exp ...more
It may look like a modern take on Oliver Twist but, we assure you, this is for real. Before you get too alarmed, however, you should note that the headline reads "how to steal cars" and not simply "to steal cars." We are, after all, dealing with the fine people at Machine Pro ...more
Check out the full length Debate on Proposition 23, on October 21st at the UCLA campus. We have Dorothy Rothrock in favor for Proposition 23 and Terry Tamminen who stands against it. Both argue with great view points but the questions to keep in mind are as following: 1. Is i ...more
The adoption process can be long and taxing. Start off right by learning the basic procedure. Step 1: Learn the requirements Find out the qualifications to adopt. In the U.S., adoption laws vary from state to state. For international adoptions, check federal regulations and th ...more
There are loads of reasons for somebody to want to recover a Windows password, and there are lots of different ways of doing it. My favorite of all of these ways is to use a piece of software called Ophcrack because: The free tables are suitable for almost all uses (I've neve ...more
Immigration Laws United States Citizenship Citizens of The United States are able to enjoy every benefit that the U.S. has to offer to the fullest. But if you are not a citizen then it is a different story. A person can become a U.S. citizen through birth or through a proce ...more
I'm back with the third part to my laser weapon series (see part one and two), and I'll be explaining the function, application, and potential of semiconductor lasers, aka laser diodes. Surely, most of you have used a laser pointer at some point. Whether purchased at a dollar ...more
In the first part we differentiated the two types of control, mental and physical. In part 2 we will dig deeper into Physical crowd control and analyze examples that are present today. Physical Crowd Control This is the easy one. Wikipedia says: Crowd control is the controll ...more
WonderHowTo is made up of niche communities called Worlds. If you've yet to join one (or create your own), get a taste below of what's going on in the community. Check in every Wednesday for a roundup of new activities and projects. Thanks to all of our active moderators and ...more
Amazingly, a lot of people I know haven't even heard of SOPA or PIPA. Now, every English-reading person with an internet connection will finally have those two four-letter acronyms emblazoned in their minds. For the entire day today, Wikipedia's English-language site will be i ...more
I want to write this article because in my childhood, I had experienced internet stalking which ultimately ended in physical stalking which then lead to several attempted abductions. I have now learned how to use the internet safely, who to communicate with and I've learned ho ...more
Warnings i cant be held responsible for any illegal act done by anyone but myself and there are copyrights so notise that taken the trademarks or copyrights are strigtly prohibeted by law and will be punshied by law and i or my partners cant be held responsible for sudo camma ...more
Gary explains the voltages present on the pitch bend pot and how to determine it is working correctly. Use of a volt ohm meter is explained in the process.
If you work for a company you are probably entitled to maternity leave. Gather as much info as possible and then have an honest conversation with your employers. With tact and civility should be able to have time to recover with your baby and keep your job too. Don’t wait unt ...more
In this video series Rafael Mayans explains how to offshore fish. He goes over everything from the types of bait to use, trolling, tying knots and the laws of offshore fishing you'll need to understand. Part 1 of 20 - How to Offshore fish. Offshore fish - Part 2 of 20. Click t ...more
People fundamentally distrust magicians. And they should. The illusions they proffer are just that, illusions meant to astound rather than tangible interactions and results that have weight and meaning in our real world. Our lizard brains know this, and, no matter what the out ...more
In this video tutorial I will be explaining how to work a tension problem. Usually these problems are found during a Newtons laws unit in physics. I am currently in physics and I thought I might share my strategy and work to help you guys succeed in the problems. Thank You. Th ...more
I obviously do a lot of Steampunk projects, but there are a ton of things out there that I haven't tried yet. So, in an effort to broaden my horizons, I recently taught myself how to use Arduinos, which I plan to incorporate into some of my future Steampunk builds. Since ther ...more
A former decorated undercover FBI agent, Mike German, explains how the national security state, in league with local law enforcement, is secretly targeting Americans for political views and activities perceived as a threat to the political establishment. » Former FBI Agent: Su ...more
Equifax reported on Sept. 7 that it discovered a breach on July 29 which affects roughly half of Americans, many of whom don't realize they have dealings with the company. Hackers got away with social security numbers, addresses, and driver's license numbers, foreshadowing a " ...more
In the aftermath of the unindicted police killings of Michael Brown and Eric Garner, we've been told that the system worked as intended. When our legal system's outcome is at conflict with what a majority of Americans believe is just, it's clear that some changes are needed. B ...more
Although it's impossible (at least for now) to travel back in time to see the Big Bang, The New York Times has provided its readers the closest simulation of the experience via its latest augmented reality feature. On Friday, the Times published "It's Intermission for the Lar ...more
My first ever post on here was 'Keeping your hacking identity secret' and it did very well, and its not something I see here on null byte. So read along. Disclaimer: I didnt introduce you this subject in my last post, but I while do that now. First, I want to clarify that t ...more
The rise and fall of Meta, the Silicon Valley-based augmented reality startup that looked to challenge the likes of Microsoft's HoloLens, and others, took just six years. Now, as the story of the company draws to a close, we finally have some deeper insight into what exactly ...more
While hackers know and love the Raspberry Pi, many don't know of its cheaper cousin, the microcontroller. Unlike a Pi, which can be used more or less like a regular computer, microcontrollers like the Wi-Fi connected ESP8266 require some necessary programming skill to master. ...more