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...
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...
In this video the instructor shows how to solve systems of linear equation by graphing. A system of linear equation is equations of two lines that are to be graphed on the same coordinate axes. Now take the first equation and write it to form y = mx + b. Now extract the value of slope m and graph the line as shown in the video. Similarly graph the equation of the second line as shown in the video. Now if the two lines intersect at a point, that point is the solution to the system of that line...
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 ...
The war on dehydration is a commercially burgeoning marketplace. An increasingly sophisticated consumer population hoping to conquer everything from 26-mile marathons to vodka shots is deconstructing every functional remedy in the fight to quell the effects of severe dehydration.
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.
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...
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.
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.
We've shown you how to make water change color on command, but how about just half of it? What if I told you that you can split a solution right down the middle and make the color disappear from one side, just by shining light on it?
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.
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.
System of equations is nothing but a system which contains more than one linear equations. This system of equations can be solved to arrive at the solution of the system. A simple system of the linear equations can be a pair of equations. To solve this kind of system you can employ the substitution method. So take the two equation of the system. Solve for the value of y in the first equation in terms of x. Now take this value of y and substitute in the second equation y value. Now the second ...
In this how-to video, you will learn how to make potassium trichromate. You will need potassium chromate and dichromate. It is easy to go between the two. You can add a base to the dichromate to make the chromate. It will go from orange to yellow. The trichromate can be produced. You will need nitric acid, potassium dichromate, and sodium disulphate. First, make a solution of sodium sulphate. Take a long test tube and the potassium dichromate to it. Add double the volume of concentrated nitri...
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...
Modern milking parlors use machines, but milking a cow by hand is an ancient art. Here’s the "udderly" perfect way to do it.
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.
Are you sick and tired of staring at that water damage on your ceiling? There’s no need to sleep staring at that annoying water spot on the ceiling when it's so easy to get rid of! Loose the spots with the easy steps listed in this video.
If you're struggling a bit with algebra, check out this video to learn how to isolate a variable. Isolating a variable is a matter of separating and simplifying.
Nothing is worse than having a contact slide under your eyelid. Okay, there are worse things. But this is one you easily can avoid. Check out this Howcast video tutorial on how to put in and remove contact lenses.
This housekeeping how-to video offers five tips for cleaning up your dog's accidents. Follow along and clean up dog accidents properly with help from the Dog Channel's five tips. Learn to clean up urine or soil, keep your home smelling fresh and prevent future accidents.
If you are looking for a data storage solution that's portable, but also durable, you should watch this video to learn how to build a USB hard drive. Take apart your external hard drive to find out what kind it is and then build a new one.
This is a great science project! For this, you will be able to make an air battery using zinc. You will also need a paper towel, some steel wool, and an electrolyte solution. An air battery can keep for decades as long as it's dry.
Christmas cards are wonderful and beautiful to display around the house during the holiday season, but what happens after Christmas and the New Year has passed? Most of us either stuff them in a drawer somewhere or simply throw them away.
If you've been letting your snail mail pile up for days on end, there's an easy solution that won't cost you anything. Just rummage around your house and find some wall hooks or binder clips, and start sorting away. You'll be surprised at how much more organized this method is!
If your mountain bike chain keeps falling off, there may be numerous problems that are going on. In this next video tutorial, you'll find out one solution for making sure that your gears are fine tuned and that your chain won't keep falling off. It's not too hard to perform and makes your bike ride more enjoyable. Good luck and enjoy!
If you're looking for a great way to help add extra nutrients to your plants, this tutorial has a possible solution. It's called compost tea and it can be made using only about three different ingredients.
In this tutorial, talk show host Jenny Jones shows you how to make a totally edible cleaning solution that is great around the house. The best part is that this is totally safe for kids and pets and can be used for so many different things. Jenny will also show you how to make a dispenser so that it is easier to keep this cleaner around the house and use it. Check it out!
Ian uses round magnets, pencil, clay and glass slide to work his magic science experiment. Magentic levitation is said to be a solution for energy costs of trains because it cuts down friction and creates what is mythically regarded as a perpetual energy motor. This is an interesting toy model of how the maglev trains and large scale generators work
Interlacing is not evil. In fact, it's a brilliant solution to some really thorny technological problems. This segment explains exactly how interlacing works, why it's important, when you want to use it and how to get rid of it when you don't. Watch this video tutorial and learn how to understand interlacing.
Red, itchy, scaly, and cracking feet can only mean one thing, athlete's foot. Watch this how to video and learn how to treat athlete's with a simple home remedy from Pharmacologist Joe Graedon. He shows you over the counter products that you can buy and how to use a solution of vinegar, Listerine and Vick's Vapor Rub to help the foot fungus go away.
After a silly opening with some amazing levitation we learn how to do a much simpler levitation. This video is hilarious and you can learn a thing or two from it. This is not the Balducci levitation. It is an ingenious bootleg solution that involves taking off one shoe, and a blanket that disguises some of the method.
Say you're interested in using Photoshop for your photography, but you don't want to spend the money on Photoshop Elements or CS3. What to do? Well, Adobe has a solution for you! It's called Photoshop Express, and it's free. Check out our interview with Tom Hogarty of Adobe, as well as a preview of what you can do today with Photoshop Express.
This video gives you a creative solution for handling those annoying telemarketers by giving them a taste of their own medicine. You don't even have to be mean!
A 20$ bill is dipped into a solution of water and isopropyl alcohol. It is then ignited and the bill bursts into flames but the bill does not actually burn.....well most of it anyway.
Make a bubble solution out of highlighter markers that'll let you blow bubbles that glow under blacklight.
A lot of vegetarians say that the only thing they miss about meat is bacon. There is a great solution by making shiitake mushroom "bacon".
