The hydrogen fuel cell has great potential to replace carbon-based fuels in our vehicle fleets and stave off global warming. It's a difficult concept intellectually, so why not make this fun little science experiment to try it out for yourself? Yes, by following these simple instructions you can make a small hydrogen fuel cell at home that will even power some devices!
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 finish your homework or 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 unpack and solve word problems that require you to divide whole numbers.
This video illustrates how to do a "free fall" experiment to understand orbits. Here are the following steps:
This video is a science experiment for kids, which demonstrates how to make Invisible Ink at home. For this experiment, you will need the following: a knife, a spoon, a lemon, a cotton swab, a cup of water, paper, and a saucer.
This video shows you how to calculate the percentage yield in chemistry. To find the percentage yield, you will need to divide the actual yield by the theoretical yield. Then, multiply it by 100: i.e. % yield = actual yield/theoretical yield x 100. An actual yield is the amount of a substance produced in an actual laboratory experiment. It is based on an actual physical measurement of a quantity. The theoretical yield is the yield as is calculated on paper: i.e. through calculations. Therefor...
Want to learn how to harvest the sun? Just watch this science experiment video to see how to convert sunlight into hydrogen fuel. It's simple and environmentally friendly.
This science video explains the relationship between buoyancy and density using hot air balloons, fish and cruise ships as examples of objects using buoyant force. This video tutorial also includes instructions for calculating the density of a rectangular prism and a liquid. If you like science experiments, you can't miss this one.
Ever wondered how a tornado works? Well, wonder no longer and watch this video tutorial for teachers and students alike. You will see how to create tornado demonstrations for use in the classroom or for fun.
Check out this low cost project. This video will show you how to transfer sound over light! Yes, this is possible. You'll transfer a sound with a distance of 5 meters, but you may experiment on greater distances if you'd like. You'll need a laser (or an LED) for this audio project, one Opto transistor (or resistor), one 3-volt battery, two mono audio jacks, and some alligator clips. Just watch this cool electronic audio experiment and try it out yourself.
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 finish your homework or 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 unpack and solve word problems that require you to apply deductive reasoning.
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 finish your homework or 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 find answers to rational equation problems in algebra.
See how to apply exponent rules to simplify and solve equations with this free video math lesson from Internet pedagogical superstar Simon Khan. 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 finish your homework or study for that next big test).
How can a drug used to treat cancer be effective against viruses, too? The answer lies in the drug's shared target — specifically, cellular components that control the activity of genes. A new research study showed that one such type of drug, histone methyltransferase inhibitors used in cancer clinical trials, has activity against herpes simplex virus, too.
Equations involving square roots are difficult to solve because of the complexity involved in performing operations on the square root terms. But you can follow a series of steps to solve these problems easily. To solve these kind of problems first isolate the square root term on one side of the equation and the non square root terms on the other side of the equation. Now in the next step square both sides of the equation. This gets rid of the square root on the left hand side and the equatio...
In this video Dr. Carlson does several experiments to illustrate how a vacuum works. A vacuum is created when all the air is removed from an object.
This video shows the method to prove some trigonometric identities. This involves the use of algebra and knowledge of basic trigonometric identities. The video demonstrates three examples to illustrate this problem and its solution. The first problem shows a relatively simple problem involving sines and cosines. The video shows some basic algebra steps to simplify the problem and prove the identities. The second example involves a slightly complicated problem involving square of combination o...
If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 50th installment in his "Excel Statistics" series of free video lessons, you'll learn the basics of probability:
In this how-to video, you will learn how to stack liquids at home. This will make for a great experiment. You will need a tall, transparent container, molasses or honey, liquid soap, water, vegetable oil, and rubbing alcohol. You might want food coloring and items to float in the container. First, add the molasses to the container. Next, add the dish soap and water. You can add food coloring to this. Make sure to pour it on the side of the container. Add the vegetable oil on top of the water....
Reflexology is a form of alternative medicine (read: no drugs involved) that involves applying pressure to strategic points on the feet and hand without lotion or oil.
This new and way more extreme form of BASE jumping involves a modified jumpsuit that makes you into a human airfoil. Called a squirrel suit or bird suit, this new sport is as close as man has got to flying. The barrel roll is a sweet stunt that involves a huge level of control and skill. Reach terminal velocity pretty easily in a jump.
A fire snake, also referred to as a black snake or sugar snake, is a classic science experiment you can do right in your own kitchen using a baking soda and sugar mixture and a fuel to ignite the reaction.
Sure, buying a quilt is fun, but making your own is much cooler! Learn how to design and sew your own quilt by watching this informative video.
Do you think it's easy to place a coin on top of a lemon that is floating in a glass of water? If you said yes, you're probably right.
If you enjoy dice games like Yahtzee that involve rolling dice in a cup, you have to learn this trick. It's called dice stacking, if you're not familiar with it, and it involves picking the dice up off the table with the cup and rolling them in such a way that they come out stacked. It makes you look like a pro.
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 finish your homework or 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 solve word problems involving direct variation.
See how to find the domain and range of a function implied by a word problem with this free video math 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 easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutor...
This video walks you through the steps of solving exponent properties involving products. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
Many of the coolest freestyle soccer tricks involve passing one leg over the ball while it's in the air. This trick, the Toe Bounce or TB, is in that vein, but with a twist. This video will show you how to do the trick, which involves swinging one leg over the ball while the ball bounces off the other foot on the ground before being caught by your swinging foot as it comes back down. Beautiful.
Vasectomy is birth control option for men which involves a surgical procedure that will prevent sperm from passing through the vas deferens. Watch this instructional video to learn more about vasectomy and see demonstrations of two occlusion techniques that involve thermal cautery of the ductus deferens.
You want whales? Ok, you'll get whales! That seems to be the unspoken message from Magic Leap via its latest update in the form of several new experiments posted inside its Helio app.
Even in augmented reality, Wile E. Coyote still can't catch the Road Runner. The latest AR experiment from developer Abhishek Singh brings the classic Looney Tunes duo into the real world.
Love the look of the new Discovery Channel cubic animation? The Greyscale Gorilla is here to help! After several months of experimenting, you can now benefit from his hard earned wisdom! Using Cinema 4D, you can make your own copy of this effect.
Fashion a bikini absolutely no one else at the beach this summer will have by watching this sewing tutorial by GiannyL. Using only an old T-shirt, you'll learn how to cut the T-shirt into pieces and refashion it into a two-piece bikini.
Check out this video for advice on how to build a brand new wallet out of duct tape. These aren't just ordinary wallets, either, they have slots for credit cards and everything! These are complete billfolds and can be made into plenty of different style depending on your preference. So, follow along and once you get the hang of it, why not experiment and create your own design?
In this two-part science tutorial, learn how to make a cartesian diver, easily & inexpensively. A Cartesian diver, sometimes known as a Cartesian devil is a classic science experiment, named for René Descartes, which demonstrates the principle of buoyancy (Archimedes’ principle) and the ideal gas law.
Want a fruit smoothie? While we can't recommend asparagus or cheddar-flavored drinks, we encourage you to experiment, using this road map to the ultimate healthy blended beverage. Remember to be creative -- mix a variety of fruity flavors.
This science video tutorial includes step-by-step instructions for extracting DNA from wheat germ, the embryonic plant attached to the wheat seed. Individual wheat seeds, or kernels, separate readily from the plant. This kernels have a tough outer coating called bran. If you want to know more, just watch this science experiment.
This video tutorial demonstrates how to make a flying tea bag. You only need is a cheap tea bag and a match to set it off. The tea bag remains are so light that the hot air produced from the ashes is enough to make them lift into the air. This experiment is slightly dangerous, so be careful!
The fly stitch can be worked both horizontally and vertically. In this video tutorial from Needle 'n Thread, you'll see the fly stitch worked vertically.Besides working fly stitches in horizontal rows or vertical columns, the stitch can also be isolated, to create "filled" (loosely filled) background areas, or to create small accent-like stitches across a "canvas." Experiment with it! It's a fun and quick stitch!
Need some help figuring out how to tackle application problems involving volume? 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. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve application problems involving units of volume.
