Learn how to find latent finger prints on brass surfaces, such as fired cartridge cases. Called the Acidified Peroxide method, using only white distilled vinegar and hydrogen peroxide that you can find at your local drugstore, you can uncover fingerprints that is usually impossible to see using other methods. After mixing the vinegar and hydrogen peroxide the solution should start turning a greenish color around the brass object after 5 to 10 minutes. After you see the green color throw away ...
Elimination in mathematics is used to find the solution set of a system of equalities. This video tutorial shows how to use elimination to find the solution set of a given equation and offers several examples to illustrate the process. Before applying this method, the equation must be in the form “Ax +By=C.” When graphing a set of mathematical equations that intersect, the answer to the elimination is the point on the graph where the two lines cross.
Many times, the task bar and some of the desktop icons on your computer disappear. This being a common PC problem, the fun video has shown three different ways of solving the problem. The presenter has done a good job by enlarging the key images at most critical points in the presentation. He has also provided more than one way, in fact three ways of solving the problem. There are multiple solutions available with Windows but a very few presenters offer more than one solution. Each proposed s...
Tired of soldering? Well, there's a solder-less solution to joining pipes together. Check out this handy video tutorial on how to join copper pipe with "Just For Copper" pipe glue. Just For Copper is a solderless bonding solution for copper pipes and fittings. This is very useful in areas where a blowtorch cannot be used.
See how to turn a coin pyramid upside down in three moves. This ten coin trick is as easy as any other coin trick, with a simple solution. Show your friends and see if they can figure out the solution. It just takes three moves and that's it.
Lye can cause chemical burns and the fear of getting burned prevents arts enthusiasts from making homemade soap. Watch this video to learn how to safely make lye solution so you can go ahead and unleash the creative child in you.
This recipe for bubble solution will produce bigger-than-normal bubbles. It's simple and easy to double, triple, quadruple, or however many times you want to multply it.
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 ...
In this video, Do It Your Self Central demonstrates to viewers how to clean a dirty penny by using common household products, namely vinegar and iodized salt. He suggests to put 1/2 cup vinegar and 2 teaspoons of iodized salt into a cup. This solution will be used to clean the penny. He demonstrates the power of the solution by holding the penny into the mixture for a few seconds. After only a short time, he shows the dramatic change between the portion that was dipped in the solution and the...
This video shows you an alternative procedure to bismuth subnitrate, using Pepto-Bismol tablets. You'll learn how to test for alkaloids, similar to a toxicology report. Put on your goggles, for this great home science experiment.
In a previous video by NurdRage, he showed you how to make manganese sulfate ("How to make MnSO4 from MNO2 (two separate ways)"), but there can be situations where the iron in the precursor would carry over and contaminate the product. Recrystallization doesn't work for this high level of contamination, so a different approach is needed.
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.
The first video is an elementary explanation of triangular numbers and a Gauss demonstration for the sum of the first 100 natural numbers.
Kate Hemmings on The Crafts Channel shows that covering a cake isn't as tricky as you may think. You will need a type of icing that rolls out, such as fondant icing. Ideally, you will want to have fondant icing with glycerine, and so the Pettinice brand is excellent in this case. If you use this icing, you will not encounter problems with cracking of the icing when you try to shape it over the cake.
Hydrazine sulfate has many uses, but most notably, it's been used under the trade name of Sehydrin, a treatment for anorexia, cachexia and some even think cancer. But for we DIY chemists, it's useful for something entirely different— as a substitute for the more dangerous pure liquid hydrazine in chemical reactions. NurdRage shows you how to make it via some hypochlorite and the Ketazine process.
This video answers the question, how do you safely clean an LCD? Remember that LCD’s do not have glass so you have to be careful how much pressure you apply, as well as the kind of cloth you are using, or you can damage or scratch the screen.
Various electrochemical reactions requires that anodes do not degrade when used. Carbon is cheap, but degrades easily and platinum is extremely expensive. In a previous video, you learned "How to make cobalt and manganese nitrates", and you saw that titanium could be used as a cathode, but not as an anode due to an effect called passivation.
Aluminum nitrate nonahydrate is a crystalline hydrate - a salt of aluminum and nitric acid - Al(NO3)3·9H2O. It's used for a variety of things such as antiperspirants, corrosion inhibitors, and petroleum refining, or… glow-in-the-dark powder. Watch this science video tutorial from Nurd Rage on how to make aluminum nitrate nonahydrate with Dr. Lithium.
While the rest of the world is scrambling to figure out how to adopt augmented reality and VR tools for remote meetings, one company is building its war chest to serve the growing space of corporate clients who need this kind of immersive computing training.
This video in the Education category will show you how to make hot ice using Sodium Acetate Trihydrate. For this purpose you will need a pan, 100g of Sodium Acetate Trihydrate, 25ml of water, a wooden spoon and a glass. Take the Sodium Acetate Trihydrate and put 100g in the pan. Then place the pan on a stove and turn to medium heat. The Sodium Acetate Trihydrate will start to melt. In about five minutes when it has melted fully, add 25ml of water. Let the solution simmer for two minutes while...
From brute force hardware-based solutions like pointing a camcorder at your monitor to more elegant, software-based solutions like (the free and open source) Xvidcap, there are no shortage of ways to create a screencast while running Linux. In this how-to from Linux Journal Online, Shawn Powers offers a comparative look at many of the most popular techniques employed by Linux users.
Want a green, clean home but are wary of mass-manufactured cleaning products? In this tutorial, you'll learn to create a simple, green cleaner using a baking soda and vinegar solution, which, beyond being environmentally friendly, is a lot of fun.
Larry Jordan explains the advantages and trade-offs of various external drive solutions, compares data rates or FireWire drives vs. SATA drives, what solutions work the best and how to avoid clogging your Final Cut Pro workflow.
So.. you spent 200, 300 or even 600 bucks on your new iPhone and now you have no reception! It seems as though Apple was so busy developing cool new apps for it's latest creation that it forgot about the fact that its.. oh right.. also a PHONE. If your new iPhone 4 cuts out every time you hold it, check out this clip. This tutorial will offer some awesome tips and speedy solutions to this annoying problem. So, if you are about to run up to Cupertino and tell Steve Jobs where he can stuff his ...
Are you sick of spending a ton of money on not so great cleaning supplies? Well, if cleaning the screens around your home are the problem, check out this tutorial. In this video you will learn how to make a super effective cleaning solution for your TV, PC, laptop, iPod screens, etc for about a dollar! This couldn't be easier to do, and your screens will be clear and shiny in no time.
In this video tutorial, viewers learn how to make "hot ice". Users will need sodium acetate. Begin by putting the sodium acetate into a pan. Add a small amount water to the sodium acetate. Heat the mixture on a stove until the sodium acetate has dissolved. Pour the solution into a container. Do not pour in any undissolved crystals. Put the container into the freezer or refrigerator for a while. When the solution cools down to room temperature, take it out. Touch the sodium acetate and it will...
The man was requested to solve a short, basic chemistry exercise. He starts by explaining the meaning of the terms involved in the problem: molecular mass, empirical formula and molecular formula. He also explains the way the are connected, for a better understanding of the way the exercise is solved.
Ron Hazelton shows you an easy an effective way to wash windows. In a warm bucket of water you add one tablespoon of dishwashing solution, a scrubber with sleeve is used to apply the solution to the window, and dried with a professional quality squeegee. Each step is shown and explained in full detail to ensure the best possible completed outcome. After watching this video and walking yourself through the steps a few times you can wash a good sized window in about a minute.
Everyone has those watermarks when you forgot to use a coaster but the solution is easy!! Here is a little step by step guide and a little video that might help - let me know what you think!
For me, the worst thing about makeup has always been taking it off. It's always that one last thing you have to do before you go to bed, and if you don't, you instantly regret it when you wake up. When you're tired, makeup removing wipes are a godsend because they're so quick.
In this tutorial, we learn how to make polymer putty with household materials. You will need: borax, white glue, water, 3 plastic cups and spoons, and food coloring to color your putty. Now, dissolve 4 tbsp of Borax in 2 liters of warm water. Then, prepare equal parts of glue and water together. To make this, you will need 2 parts of the glue solution to 1 part of the Borax solution. Once you mix these together, you can add in some food coloring to it. Pour this into different cups to make di...
New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun and Mr. Excel, the 42nd installment in their joint series of digital spreadsheet magic tricks, you'll learn how to look up a picture in Excel. See a VBA solution and a formula Solution using the INDIRECT function and named ranges.
Khanacademy teaches us how to handle simple inequalities (less than or more than). In an equation, we usually have one solution. In problems involving inequalities, there is a whole set of answers. For instance, x minus five is less than 35. The answer for x is a whole series of numbers that when five is taken away from it, is less than 35. This equation is handled like any other equation involving an equal sign. We add five on both sides of the equation and the answer for x is any number tha...
Your mother used to remind you to wash behind your ears now make sure you keep your dog in tip top health and clean their ears too. Dogs depend a lot on their hearing but can build dirt and wax in and around their ears which can be irritating or lead to infection.
Do you like hamburgers, but feel that hamburgers at restaurants are too unhealthy and not a long term solution to your cravings? Well, this video is your solution. In just 10 minutes, viewers will be taught how to make their very own hamburger meatloaf. Using nothing but basic and simple techniques, the viewers could have tasty and healthy hamburgers in no time. Highly recommended to any person who likes to cook, enjoys a healthy lifestyle and most of all, likes hamburgers.
A chemical demonstration of the synthesis of nylon using different chemical solutions.
Smartglass maker ThirdEye Gen, Inc. has introduced an augmented reality solution for enterprises that includes their X1 Smartglass and a suite of software applications that enable completely hands-free computing.
When developing for the HoloLens, keeping a constant 60 fps (frames per second) while making things look beautiful is a challenge. Balancing the processing power to display complex models and keeping the frame rate where it needs is just a straight up painful process, but a solution seems to be on the horizon.
Though you may scrub every inch of your kitchen, there are plenty of trouble areas that are nearly impossible to get clean: gunked-up tile grout, rust in the sink, and caked-on burners and grates on the stove. As far as burners and grates go, you're in luck, because there's a simple solution to returning even the grossest ones back to their original shine. The Key Is Ammonia
I own two aprons—a cute one for company, and another for the hard-core cooking duties, like cutting up chicken and making stock. The sad truth is that I almost never remember to wear either of them. So, much of my clothing ends up spattered with grease, liquid, and bits of fruit and vegetable. While stain-removing sprays, sticks, and pens are all effective to a certain extent, they have two drawbacks—they're expensive and sometimes I need to use them in large quantity, like when a piece of eg...