In this video Ken teaches you about the Pythagorean Theorem. The Pythagorean Theorem is used to find the missing length of a side of a right triangle. By watching this video, you will learn how to find any the length of any side by using a simple mathematical formula. Ken walks you through various examples changing the dimensions of the triangle you are solving as well as changing the side you are solving. Ken even includes a real world application to further your understanding of the Pythago...
Laura Bateman, of Extreme Fitness Now, demonstrates how to wrap your hands for boxing. Wrapping is important for protecting your wrists and knuckles from injury. Mexican hand wraps are longer than the typical hand wraps. Place the looped end of the wrap over your thumb. Be sure to position the wrap the right side down. Next, wrap it around your wrist three times. Feed the wrap under your thumb, under the palm and up to the knuckle of the index finger. Wrap the knuckle two times. Cross down to...
In this video the instructor talks about parallel and perpendicular lines. Parallel lines are lines whose slope is the same. Now take the equations of a couple of parallel lines. Graph those lines on a coordinate axes and you can see that the lines are parallel to each other and never intersect each other. Perpendicular lines are those whose product of slopes is negative one. Perpendicular lines intersect each other and they make a perfect 90 degrees with each other at the point of intersecti...
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 is then used for geometric statements. If two angles are complementary, they sum to 90 degrees. If two angles sum to 90 degrees, then they are acute. By the law taught, it can be said that if two angles are complementary...
This video discusses the number zero in division. When dividing numbers, there are ways to check your math, like multiplying the two numbers. When you multiply zero with any other number, it still is zero. The video goes on to discuss indeterminate answers. If you were to divide a zero by a zero, your calculator would come up with an error message. But there are real results to these odd equations and they are indeterminate. The indeterminate doesn’t really show up in everyday living, but in ...
This is a presentation of different types of immune responses in human body. There are two types of immune systems i.e., non specific and specific or adaptive immune system. Again, non specific immune system is sub- divided into barriers. It is the first line of defense. The second line of defense is the inflammatory response. They are phagocytes. These are all products of white blood cells. It is also called as leukocytes. Lymphocytes are another type of white blood cells which are carriers ...
Ever wonder how helicopters work? Gather a piece of paper, a ruler and a pair of scissors. Take the ruler and draw 3 lines of 10cms on a sheet of paper. Then place the ruler in the middle and draw 2 lines of 14cms in length. Then cut the lines with the scissors and fold the slides in the opposite direction. Get one paper clip and put it on the tail end of the helicopter. The flight of the helicopter depends upon the size of the wings. It will help you to learn the dynamics of a helicopter.
This video shows how to use the French expressions "das que..." and "ne...plus". The expression "das que..." means "as soon as".”ne..plus" means "no longer". You can use these expressions in sentences. " Je ne veux plus venir" means “I don’t want to come any longer". "Des que je me leve je prends un cafe" means " After I get up in the morning I have a coffee" These are regular sentences people use every day in the French language just as used in the English language.
In this video tutorial, viewers learn how to speak French. This video focuses on the phrase "il faut" and the French infinitive. This video is the third episode of a ten episode series. Viewers learn how to form sentences and the meaning of some French words. This video is very detailed and descriptive. It gives a great, easily understood explanation for viewers. This video will benefit those viewers who want to learn the French language or want to become more fluent in speaking French.
Pierre-Benoit Heriaud explains the various meanings of the French word bien. Firstly, there is one obvious meaning the common "good" or "acceptable". However, one can also use it in sentences such as "Il fait bien froid" to present the current status of the weather as being excessive in one way. In this case, it can easily be replaced with the adverb "vraiment", not losing any bit in meaning. Lastly, the word "embete" might also be a trap in that it usually means annoyed, but can be associate...
This energetic video shows what the Cambrian Explosion is and when it occurred in relation to a 24 hour clock that represents Earth's life. The Cambrian Explosion was a huge increase in multicellular life forms that occurred about 542 million years ago. The video then demonstrates how the Cambrian Explosion was only a small part of the history of life on Earth. It goes through the major developments of life on Earth and shows how it relates to a 24 hour period. This video is a tool in underst...
A video from Graham River Productions, presented by Shannon Smith, explains how to interpret Histograms on modern Digital Cameras. Just because a captured image looks nice on the camera screen does not mean that it is really good. One of the better checks for quality of a photograph is the histogram display that is available on many modern cameras. Histograms accurately tell whether the full potential of the the camera's optical sensor has been utilized or not; and are the tools of choice for...
In this video tutorial the instructor demonstrates resonant frequency. In this video the instructor shows the sound of resonance and how to generate it. Resonance is a forced vibration of energy into molecules of an object that makes those molecules vibrate at their resonant frequency. When these molecules vibrate naturally they produce a kind of noise that can be annoying some times. In this video the author makes a small object using a rubber band and a net that produces vibrations when rot...
Ever wondered how science could turn out to be fun? Here's how: take a piece of paper with a mixture of sodium nitrate and sugar. When heated, sodium nitrate releases oxygen and burns sugar. Sugar alone cannot burn fast. If you want faster results, then take sodium nitrate with sulphur and some reactive metals. Add some coal to it for a faster result. This will help you burn some useless pile in quick time.
The speaker starts out by peaking the viewer's interest in the importance of a neuron. Using a diagram, the speaker helps familiarize the viewer with the anatomy of a neuron. As he draws a diagram of the neuron, the instructor gives a detailed explanation of what the various parts of a neuron do and how each of the various parts interacts with other neurons. The speaker also explains how the neuron sends and receives signals throughout the body. The video is informative, very good quality and...
In this video tutorial the instructor talks about Hydrochloric acid (HCL) and how it reacts to a few metals. To try this out take 30 ml of concentrated hydrochloric acid in a beaker. You need to employ caution while handling acids, especially if you use strong ones. Now you can throw small pieces of different metals into it carefully to see how it reacts with different metals. For instance when this HCL comes in contact with metals various reaction take place depending up on the metal. Like i...
The Mean is the average number, the Median is the center of the group and the Mode is the number that shows most often.
Walt Ribeiro shows you how beats per minute work along with time signatures. This video takes you through the steps with a detailed explanation of how they work together and is executed using a drum along with a handy saying to help you keep your time signatures going steady to the beats per minute. Walt explains this using an electronic tempo clock while changing up the time signature. If you have ever had a music question with how these two things relate to each other then video is for you.
In this tutorial the author explains about the concept of X and Y intercepts in coordinate geometry. She uses a graph consisting of a line to explain the concept. She tells that Y intercept of a line is nothing but the value of Y coordinate where the line crosses the Y axis. Similarly she tells that X intercept is the x coordinate of the point where the line crosses the x axis. She demonstrates this example using a graph tool. In this video the tutor shows how to find the X intercept and Y in...
This is a comedic look at how body fat burning works according to our host Crazy Chris. This home video is edited together to give us some tips on how to burn fat in a pretty humorous way. Chris goes for a more goofing around and recreational approach to staying in shape rather than normal exercise. He recommends your favorite activity for 30 minutes twice a day. His happens to be swimming. Crazy Chris basically tells us to burn body fat you need to burn energy by playing sports and having fun!
In this tutorial the author shows how to work with dimensions in the Xara Xtreme tool. This is basically a complex concept. Now open the tool, go to window and open dimensions. Make a square. You can see the details of the square on the tool bar which shows the width height and X,Y dimensions of the image. Here the image is straight forward. Now you can add the borders to the square and see the changes in the dimensions of it. This video shows the different changes that are taken place and al...
This video is about understanding the basics of selling on eBay. Your feedback rating is very important. Buyers rate you on their purchase, the quality of the merchandise, how quickly it arrived, and the information you provided. Research prices on eBay. If the item is priced $2.99, and there are "0" bids, it's the starting price. If there are 8 bids, and the price is $12.99, the item was bid up to $12.99. Click on the item link below the picture, and it will bring up the bid history. You can...
In this segment of "That's What He Said," guys reveal their deepest secrets about the male perspective on dating and relationships. In a committed relationship, guys are still interested in keeping a slight air of mystery about their women. There are just a certain few things that they believe women should not do in front of men, such as going to the bathroom, doing makeup and giving each other some alone time. After watching this video, a viewer would gain some insight into the man's mind an...
Maybe you learn best by seeing things worked out in front of you and what you just saw in class today about Electronic action potential of neurons didn't quite sink in. Not to mention the test that you have coming up this week is going to be an in-depth analysis of your knowledge on this material. Let Khanacademy be your guide! For less than half the time it takes to sit through the Professors class, he explains the function of Neurons, how action potential works and sends you on your way to ...
This video is sponsored by My Poker Corner and introduces the novice into how the game "Texas Hold 'em" is played. The complete process of the game from the number of players and their positions such as the Dealer are explained. The Small Blind position and the Big Blind position in the game are forced to place blind bets before they view their cards. Different betting rounds of the game such as "The Flop," "The Turn" and "The River" are explained and how the betting works and the option the ...
One of the most fascinating figures in the 3 dimensional world is the cube. This video goes into details about the rotational symmetry of a cube. The video examines this property of cubes by rotating the figure on different axis and inspecting how this property of cubes change or react. This video is for anyone interested in 3 dimensional figures. After watching this, viewers should have a basic overview and understanding of this unique rotational symmetry property of a cube.
We all learn a simple description of photosynthesis in grade school but there are a lot more complicated process going on. Plants can utilize carbon at night and this description will explain a very advanced understanding of how CAM works.
Learn to solve a Rubik's Cube in no time flat with these easy algorithms to fix those puzzling problems. Whether you have a color that just needs to move a few spots or the proper placement is just a few places off, you can follow these step by step turns of the cube done slowly enough to follow along. The algorithm is even displayed on the bottom of the screen for people savvy in Rubik's Cube terminology. He explains several issues and scenarios that most people encounter when trying to solv...
Central limit theorum is easily one of the most fundamental and profound concepts in statistics and perhaps in mathematics as a whole. In probability theory, the central limit theorum (CLT) states conditions under which the mean of a suffiently large number of independent random large variables (each with finite means and variance) will be normally distributed, approximately. Huh? If you are having trouble understanding central limit theorum and need help trying to solve it, check out this tu...
In this video the author shows how to solve a Rubik's Cube using Peter's method. He says that he is not going to give any algorithm or step by step procedure but that he intends to give an over view of how to solve a Rubik's Cube. He starts with the basics of Peter's method. He starts with explaining few pointers like the tiles in the middle of each faces of cube never really move and he tells the basics of how to hold the cube. He goes on and explains how to solve the cube by starting from a...
In this video the author talks about the basic concepts in propositional logic, explaining how important this concept is to understanding the basic concept of logic. He says that propositional logic is also called "sentential logic" or "statement logic". He states that a proposition is synonymous to claim, statement or insertion. He states that propositional logic deals with logical relationships between propositions taken as wholes. He states that in proposition logic the proposition is deal...
Google SketchUp is a complicated architectural software that is very innovative, but it often requires maintenance and troubleshooting for complex tasks. Before venturing onto these harder tasks, lets take a look at the basics. By watching this short and helpful video, you'll soon know your way around Google SketchUp! Be sure to download the software from Google first. Don't worry; it will download quickly because it's a small file! Try to draw a few things and get use to SketchUp. Within in ...
This video is a discourse about saltatory conduction in the neurons. According to the author, it begins with the opening of a gate on the membrane of one of the dendrites of a neuron, and positive charge enters through this gate. The positive charge spreads throughout the cell, and gets dissipated as it spreads, so that, by the time it reaches the Axon hillock of the neuron, it is left with very little potential. However, the potential which results from the simultaneous excitement of many de...
Have you ever wondered if someone was being dishonest with you, but you weren't for sure? Watch this video and you will gain some great pointers of what to look for when trying to detect a dishonest answer. There are certain things a person might do when they are not telling the truth. Things like changing their posture, hesitating or not answering your questions, and repeating the question that you asked. These are a few of the non- verbal actions you will learn about in this video.
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 that body. He explains that even our weight is our mass times the gravity. So now he explains that mass of a body is constant and only our weight changes depending up on the situation we are in. If you want a clear underst...
A conservative vector field is defined as being the gradient of a function, or as a scaler potential. Conservative vector fields are not dependent on the path; they are path independent. Conversely, the path independence of the vector field is measured by how conservative it is. These fields are also characterized as being ir-rotational, which means they have vanishing curls. Actually, ir-rotational vector fields are conservative as long as a certain condition on the geometry of the domain is...
This video is about solving the Rubik's Cube in 5 easy steps. It gives an overview of the Rubik's Cube which may even be considered as surplus information for some people. It also describes common mistakes; for instance, trying to solve one face at a time. It goes on to give a recommendation that it is better to solve three layers at a time.
This is a wonderful instructional video on how to play Texas Hold 'em cards game. This video demonstrates the rules very clearly and hence any one who watches this video will quickly learn how to play the Texas Hold 'em game. You can start the game with bet, deal and then you can play. You will need poker chips, dealer chips and deck of cards. You can go for blind bets. You can go for big blind or small blind. You can then flop. You can turn or river. You can win according to the combination ...
What is the difference between a F1.8 lens and a F5.6 lens? It's really very simple! F8.1 has a much larger lens, and therefore it allows more light to pass through. There are several benefits in having a larger lens. Number one: The quality of the background is improved. Number two: Your focus speed is faster. Number three: Low light ability is better. F1.8 lens are a professional level. F5.6 lens are the commercial kind. For a higher quality photo, you might consider using a larger size lens.
A short video dedicated to the DNA Phantom Effect and how it might be related to human emotion. The DNA Phantom Effect is a questionable discovery by Russian scientist and "father of Wave Genetics", Peter P. Gariaev. In 1985 the very first evidential proofs of DNA being able to maintain wave/field type memory were found. That same year, the "DNA Phantom Effect" was given its name after observations made by Gariaev stated that physical DNA somehow attracted and manipulated light in a vacuum ch...
