Given a equation of a line, you can graph the line. A system of equations is nothing but equations of more than one line. In a single equation all the points that lie on the line, satisfy the equation of the line. Similarly a solution of a system of equations is points that satisfy each and every equation of that system. A system of equations can have a single point as solution when the lines intersect at a common point, or have a unlimited points in solution when the lines overlap on each ot...
Watch this science video tutorial from Nurd Rage on how to make iodine from an alkali metal iodide, hydrochloric acid (HCI), and hydroxide peroxide (H2O2).
One of the most famous and repeated chemistry experiments involves money. Some would say this is more of a trick than an experiment, but you can be the judge of that. No one can just turn pennies into silver or gold coins, but someone with a few chemicals can. So, if you want to cooler cents in your pocket, try out this chemistry trick yourself. Nurd Rage (Dr. Lithium) shows you how to turn pennies into silver and gold coins using zinc.
Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.
Want to test whether the soil sample or a water sample contains boron, watch this video. As shown in the video, the first step is to create test specimens of various concentrations using a simple turmeric and ethanol solution as a base for comparison. The basis of this experiment is the fact that curumin present in turmeric reacts with boron to form a reddish compound and so the result of this reaction can easily be verified visually.
This two part video walks you through the steps of solving a strange chess problem. Don't fret, any question you may have, will be answered. Watching this video will make you help you to solve that ever so difficult chess problem.
In this video the instructor shows how to solve a system of equations by elimination method. First you need to know how many possible number of solutions you can get by solving a system of equations. There are three possibilities. In the first case there are two lines with different slopes, so they intersect at a point which is the solution to that system. In second case there can be two lines with same slope but are parallel to each other. In this case the system has no solution. In the thir...
A very simple recipe to make an excellent homemade bubble solution! With only three cheap, common household ingredients, make a LOT of this great solution! A good way to save some money. A little bit goes a long way. Thanks, and enjoy!
You can make saline (salt) or lye (NaOH) solutions. So first you will have to arrange these things to do it which are 2 500ml bottles, 1/2 LB table salt, measuring cup, kitchen scale (optional) and pan for heating. Now first heat the
Enterprise augmented reality developer Atheer is bringing its AR solution for enterprise businesses to the HoloLens by way of a joint venture with fellow AR developer Design Interactive.
In this video, we learn how to cook a delicious turkey with brine. A brine is a saline solution that will bring out the natural flavors of the turkey. The brine insulates all the moisture so the turkey comes out more moist than ever. For the brine, start out with peppercorn, thyme, rosemary, sugar, kosher salt, vegetable stock, and mix these inside of a pot on the stove. Then, place the turkey in a large pot and pour the brine over it. After this, put water over the turkey until to the top an...
Using the quadratic formula to solve equations may bring one, two, or no algebraic solutions. The quadratic formula is special to quadratic equations, which can have fractions, radicals, or neverending decimals. Learn how to solve quadratic equations using the quadratic formula with this free video algebra lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's ea...
In this video, Dr. Shawnboy gives a graphic demonstration of how to deep-fry a whole turkey in 100% bacon grease. The major problem that is encountered while doing so is that, unlike peanut oil, bacon grease starts foaming almost as soon as the turkey is dipped into it. A very simple solution to this is to keep stirring the grease continuously while bringing up the temperature to the prescribed 350 degree Fahrenheit. It takes about an hour of frying, and the turkey is perfectly done and ready...
Is your computer's LCD screen getting so dirty you can barely make out what you're typing. Use a few household ingredients to keep a clear, sharp image on your LCD screen without clouding or scratching it.
Sunny's baking muffins with bananas, berries and walnuts. Follow along and make some delicious multifruit and nut muffins for a sweet treat. This cooking how-to video is part of cooking for Real show hosted by Sunny Anderson. With an understanding of everyday life and that real people deserve down-to-earth delicious meals; Cooking for Real offers real food, for real life. Serving up solutions for easy to prepare, fantastic tasting menus, Sunny Anderson elevates the everyday meal by taking aff...
Sunny Anderson prepares tasty shrimp pot pie that's easy for anyone. Follow along for this easy to make real food shellfish recipe.
Sunny Anderson cooks up delectable New Orleans style French toast. Watch as she cooks with an understanding of everyday life and that real people deserve down-to-earth delicious meals; Cooking for Real offers real food, for real life. Serving up solutions for easy to prepare, fantastic tasting menus, Sunny Anderson elevates the everyday meal by taking affordable, easy to find, easy to use ingredients and infusing them with diverse influences and a taste for rich, rewarding flavor. Sunny's fre...
A clogged drain is not only an unpleasant but seems to happen at the most inconvenient time. Good thing there is a simple way to unclog most minor stoppages with a few household products. Be your own plumber and keep those drains free and flowing.
Who needs to watch the new "Iron Man" movie when you can solve linear equations? Brush up on your x's and y'x with this video, which teaches you how to solver a linear equation.
In this Autos, Motorcycles & Planes video tutorial you are going to learn how to clean your car windows so they are streak free. You will need ammonia solution and a mixing bottle. Mix one part ammonia with ten parts of water in the mixing bottle. Make sure you take sufficient quantity of ammonia. Then get a spray bottle and pour the solution into it. Get a piece of rag and a micro fiber towel. Spray the window liberally with the solution and wipe with the rag. Now wipe with the micro fiber t...
In this video tutorial, viewers learn how to make "hot ice". Begin by adding water into a pan and heat it until it’s simmering, but not boiling. Add the sodium acetate to the water. Keep adding the sodium acetate until the water cannot dissolve it anymore. Stir constantly. Now pour the solution into a glass or container. Do not pour in any undissolved crystals. Place the solution into the refrigerator for 45 minutes. Now pour the solution into a container. The liquid will instantly turn into ...
artjewelrymag teaches you how to use a liver of sulfur solution to create a patina. First, be sure to wear protective gloves and eye gear. Be sure to perform this operation in a well-ventilated area because sulfur smells like rotten eggs. To get started, add a few small pieces of liver of sulfur to a small dish of warm water. Use a wooden stick or a small PVC pipe and stir. The temperature and the amount of time you leave the metal in the solution will affect the patina. You can dip the metal...
Learn how to make LED ice cubes with this tutorial! Steps:
Calculus can be a bit tricky, but don't worry, Watch Math is here to help you out. Watch this math video lesson to learn how to solve quadratic inequalities in calculus. There's no better way to learn mathematics than from an advanced mathematician, like this PhD.
Regular cleaning of your laptop computer is easy, and might save you tons of trouble in the long run. Learn how to clean your laptop with a homemade solution.
Ahead of the highly-anticipated iPhone unveiling and iOS 11 launch, augmented reality developer Scope AR has confirmed that the iOS version of Remote AR, their live support video calling app, will support iOS 11 and ARKit immediately.
Want to make boring old colorless water brighten up on command? Well, you can control the color of water with this little magic trick. Actually, it's not really magic, but a classic science experiment known commonly as the iodine clock reaction, which uses the reactions between water and chemicals to instantly colorize water, seemingly by command. You can use different colorless chemicals to produce different colors, and you can even make the color vanish to make the water clear again.
Find out how everything in a chemistry lab works, from pipettes to burners to recrystallization to storage. You'll get precise instructions on how to work and perform certain scientific duties in the chem lab, whether it's chemical or just ordinary high school science.
Watch this video tutorial to learn how to clean a toaster. The secret to good toast is keeping your toaster clean, and it only takes a few minutes of your time.
From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with radical equations containing invalid or "extraneous" solutions.
The guy first gives the definition of differential equations. He explains that a differential equation is an equation that contains the derivatives of an unknown function. He then gives some examples of differential equation and explains what the equation's order means. After that he gives an example on how to solve a simple equation. He calculates it and gives examples of graphs. Then he explains what a general solution is and how to narrow down the number of solutions using data from the pr...
In this Lynda video tutorial, learn how to use FileMaker Pro 10 software to create databases with pre-made templates. FileMaker offers these templates in a package called Starter Solutions. To access these options, click open FileMaker. Then, go to New Database under the File menu. Click the option "Create a database using a Starter Solution." The templates are grouped according to the nature of their use. Some are for the home, while some are for business. All you do is open the template you...
This was a three flip mobius strip with one surface that yields a loop with 8 twists. It takes 6 lines to flatten it which leads to 7 zones, one less than the number of resulting twists.
Less than a month after the worldwide launch of HoloLens 2, call center consultant BellSystem24 has already prepared an augmented reality solution for one of its clients.
This free video science lesson from the Home Scientist demonstrates a simple technique for creating a color-changing solution with sodium permanganate, sodium hydroxide and sugar. For all of the relevant details and detailed, step-by-step instructions, as well as to get started trying this experiment yourself, watch this home-science how-to.
This video tutorial is in the Education category which will show you how to make sodium bromate and potassium meta-periodate. This experiment uses toxic chemicals and releases harmful gases. First you have to make a saturated sodium bromide. To this solution then add a small amount of potassium dichromate. The solution now becomes concentrated. Then make the circuit as shown in the video. You need a 3 - 5 ohm resistor in order to reduce the current. Then let the cell run for around 6 hours. S...
In this tutorial, we learn how to use ninhydrin to reveal latent prints on paper. This will work out because you will be spraying a special liquid onto the porous area. After this, you will turn on a black light and then be able to see the fingerprints appear in purple! Be careful with the solution, because it's flammable! This will also stain your skin, so make sure you wear gloves and don't let it contact a surface you don't want stained. To mix the solution, you will combine both of the so...
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 webmasters, SEO professionals, and others how Google works by answering their questions and giving them insights into how they can best integrate and utilize Google's functionality to improve their business. This video will ...
Maria Cleaveland shows us how to clean a coffee maker in this tutorial. It's important to clean out your coffee maker because calcium and lime can build up throughout regular use. One option is to use a cleaner liquid that you brew just like coffee, but is cleaning solution. You will then run two water coffees after this to make sure all the solution is out. Vinegar and water also work to clean out the coffee maker in case you don't have the cleaning solution. If you do this regularly, your c...
Is your computer screen clouding up? Computer screens accumulate dirt and dust quickly causing screens to get foggy. Thanks to How To Make Anything, you can learn to do or fix pretty much anything! In this video, learn how to make a homemade solution to clean that dirty computer screen and make it look like new!
