Practical Concept Search Results

How To: Stop Incoming Calls from Taking Over Your iPhone's Entire Screen

Incoming phone calls and FaceTimes, whether you want to answer them or not, will take over your entire iPhone's screen — no matter what you're in the middle of doing on the device at the moment. You could be browsing the web, playing a game, or chatting on social media. It doesn't matter, you'll get interrupted. But you don't have to put up with it anymore.

How To: An Extended Guide on Runtime Crypters

Hello again, folks! I'm back with another (final) guide on runtime crypters which is an extension on my previous runtime crypter guide. If you have not read it yet, I highly recommend that you do since the fundamental theory of the PE format. Again, this will be a Windows-specific guide, so I'll repeat this: If you're a hater and cringe at the slightest sound of Microsoft's grotesque baby, feel free to close this tab, delete your history, exit your browser, pour some oil onto your machine and...

How To: Attack on Stack [Part 2]; Smash the Stack Visualization: Ebp, Esp, RET and Stack Frames.

Hi everyone! After messing around a little bit with IDA and Hopper disassemblers and briefly introducing you to memory, registers and Assembly, we are going to understand what happens when a process is running, which variables join the play and especially what happens when a function is called and why is this procedure-logic so interesting and useful along with the concept of stack.

How To: Calculate and understand the concept of molar mass

Two college students; Kevin Martin and Joey Smokey introduce the concept of Molar Mass. They start of by explaining what molar mass is, which is the relationship of a mole and a gram, it totals up the weight(in g)of a molecule. An example: say you have this compound, Sodium phosphate (Na3PO4). You know you have three sodium atoms, one phosphorus atom, and four oxygen atoms. You basically find the weight of each atom, if you have three sodium atoms, you multiply it's atomic mass by 3 (the numb...

How To: Understand nth roots and operations on radicals

This video teaches us the concept of nth roots. The video starts with the square root of constants. We find the number which when multiplies by itself for two times results in the constant inside the square root. Then we find the square root of variables. Here again the same concept is used. We find the variable which when multiplied by itself for two times results in the given variable. Then we find the cube root. Here we find the number which when multiplied by itself for three times result...

How To: Perform a simple crochet

In this tutorial, we learn how to perform a simple crochet. Using the double crochet and single crochet opposite to each other gets rid of the same look when you are creating a pattern. The concept is simple and can make a big difference in your creation. First, take your size K hook, then wrap the yarn around your finger. Go back and forward, then push up and you will have knotted your hook with the yarn. Now, chain one and then two, then chain one and two again. Continue to do this until yo...

How To: Use "gustar" to express likes and dislikes in Spanish

In this video, we learn how to use "gustar" to express likes and dislikes in Spanish. By practicing examples, you will be able to learn this concept easily. In English, you would say that you like something. But, the equal to this in Spanish is "gustar". You will need to use the appropriate indirect object pronouns while you are saying this in your sentences. To say Me, you will say "a mi" and "to you" is "a ti". When you are speaking to someone about yourself or a group of people, etc your t...

How To: Rotoscope in Adobe After Effects CS4 or CS5

Heard about the word 'rotoscoping' but not sure what it's about or what to use it for? This clip explains the basic concepts on how and why to rotoscope in this Adobe After Effects CS4 tutorial. Whether you're new to Adobe's popular motion graphics and compositing software or a seasoned video professional just looking to better acquaint yourself with the program and its various features and filters, you're sure to be well served by this video tutorial. For more information, including detailed...

How To: Write a macro by hand in Excel for beginners

The speaker in this video introduces the concept of macros used in Excel, very simply and lucidly. Two sets of shortcut keys are used, one set to create the macro and the other set to run it. The first shortcut opens up the VBA window (Alt+F11), with a workbook along with the 3 default sheets. This video puts the macro in a module. The procedure starts with typing sub and a name which can be easily recalled. The rules for naming the macro are also covered briefly. After the macro code is writ...

How To: Make a stair step card using Cricut Storybook

Once you get started with the concept of "stair step" cards - it is hard to stop! It would be fun to try a double set of stairs, add another row for five letter words and cut letters into the bridging circles. Cut the extra panels for the front and emboss them with the Divine Swirls 'Cuttlebug' folder. Then use the Stardust 'Stickles' on the swirls to really make them pop! The extra letters from the name cutout were perfect for the envelope. Emboss the envelope with the Birthday Candle 'Cuttl...

How To: Convert between fractions, decimals, and percents

In this tutorial the author explains of how to find out percentages of a given number. He explains that x percent of some number y is x multiplied by y and divided by 100. He goes on and explains this concept with numerous examples. He suggests a short cut to move the decimal point of a number two digits to the left to divide that number by 100. The author demonstrates many more similar tricks and short cuts using which one can easily solve percentage problems. So if you are looking for a goo...

How To: Convert mixed numbers to improper fractions

The author in this tutorial shows how to convert mixed numbers into improper fractions. A mixed number has a big number to its left, a numerator for the fraction part and a denominator too for the fraction part. Now to convert the mixed number to improper fraction we first have to multiply the denominator with the big number and add numerator to it which results in a new numerator. Now the improper fraction is the new numerator divided by the previous denominator. The author explains this con...

How To: Find the surface area of a rectangular prism

Have a 3 dimensional figure that you can not figure out the surface area? This video teaches the fundamental concepts and techniques of figuring out the surface area of a 3 dimension figure. In this video, the specific shape will be a rectangular prism. The video will assist its viewers in understanding and learning the process of how to find the surface area of this 3 dimensional figure. The method is simple and easy to learn. This is highly recommended to anyone with an interest in math.

How To: Solve temperature subtraction problems (integers)

An educational video from free math tutoring that shows an easy way to calculate differences of temperature. Many times people commit simple mistakes in subtracting temperatures that lead to illogical results. This video explains a very common pitfall and at the same time, clears up an important concept in temperature subtraction.

How To: Solve a two-step equation

This video is a detailed step by step explanation as how to solve a two step equation. The video provides an example of how to go about a two step equation problem and the steps necessary in order to solve for the value of one of the variables. This video uses very simple mathematical terminologies, therefore, most people should be able to understand and learn the concept easily. The video is very helpful and recommended to anyone who plans on taking algebra in the near future.

How To: Find the distance between two points

The user tries to explain to us how to find the distance between two points. It should be noted that we are not talking about using a ruler to measure the distance between two points. The video creator is talking about the math problem that involves finding distance between two points. He uses an electronic white board to explain to us how this is done. He goes step by step and uses a basic equation to help the viewer understand these concepts.

How To: Find a missing part of a triangle, similar to another

In this tutorial the author shows how to find out the missing part of a triangle that is similar to another triangle. He explains the concept of similar triangle diagrammatically by showing that similar triangles have similar angles and parallel sides. Now he labels sides of similar triangles and marks the value of unknown side as variable x. Now in similar triangles as the lengths of sides of proportionate he shows how to write a equation of proportion and solves it finding the missing part ...

How To: Add mixed numbers with uncommon denominators

How do you add mixed numbers with uncommon denominators? Well, this video provides a detailed step by step explanation as to how to go about such problems. It also provides an example and applies the required techniques to acquire the solution. The video is very precise in its instructions and does not skip any steps. Therefore, the viewer should have absolutely no problem understanding the concepts behind adding mixed numbers with uncommon denominators after viewing this simple and helpful v...

How To: Multiply algebraic fractions

This video offers some insight into a few more difficult concepts of mathematics by teaching you how to multiply algebraic fractions. Given polynomials in fraction form, you should first try to factor all your polynomials into their simplest form in the hopes that some factors will be able to cancel each other out. After performing these steps, you can then combine your factored polynomials together in order to get your final product. The various examples provided in this video will offer goo...

How To: Make copper sulfate and zinc batteries

Watch this science video tutorial from Nurd Rage on how to make copper sulfate and zinc batteries. They show you how to make the classic copper sulfate and zinc battery using the incredibly easy "gravity" battery design approach. Great for science fairs and similar projects this battery can be used to explore many basic concepts in batteries.

How To: Make decorative designs on your duct tape creations

Feel and see just what duct tape is capable of! You can practically do anything with duct tape! This video tutorial will show you how to make decorative designs on your duct tape creations. There are two concepts to decorating your duct tape designs with more duct tape, and that's using stripes and squares, and using stenciling. Make all of your duct tape wallets and checkbooks and whatever more beautiful with colors.