Experiment Search Results

How To: Use gravimetric analysis to analyze sulfuric acid

This video is based on a chemistry experiment. This video is going to explain to us how to use gravimetric analysis in order to analyze sulfuric acid. This experiment should not be done for those who do not have a fundamental knowledge of chemical compounds, reactions and chemical safety. He explains first what he is about to do before he does it. Sulfuric acid is acidic and can be toxic if ingested or in contact with the eyes. Take extreme care with this experiment.

How To: Calculate circular velocity & acceleration

In this video the tutors explain about the concepts of Circular Velocity and Acceleration. She explains the concepts using a real world small experiments. She shows that the equation to calculate circular velocity is v = (2 * Pi * r) / T, where r is the radius of the circle the object moves in, and T being its time period. Now she takes the values from the experiment and calculates the velocity of the other tutor who is the object that runs around in the circle for the experiment. She even co...

How To: Blow open sealed containers using liquid nitrogen

In this video tutorial, viewers learn how to do a liquid nitrogen experiment. The materials required for this experiment are liquid nitrogen and film canisters. This task is very easy, fast and simple to do. Begin by pouring the liquid nitrogen into the film canisters. Then quickly place the film canister lids on. The liquid nitrogen will eventually become a boiling gas and expand about 700 times. Because of the expanding, the pressure will build in the canisters and result in popping lids. T...

How To: Apply depth of field to your photographs

Learn how to use depth of field with help from this photography tutorial. Although it may seem that depth of field is a confusing factor in photography, it's actually quite easy to understand & adjust once you've gotten the hang of it. Depth of field (or, DOF) is a great way to experiment with your photography & improve your skills as a beginner photographer. When taking your photograph using DOF, it is imperative to remember that the shutter speed and aperture (or F-stop) need to change at e...

How To: Ignite a Brillo pad

Check out this instructional science video to learn how to make a steel wool soap pad ignite. Using a 9v battery, touch the Brillo pad to make the steel wool ignite. This is a simple science experiment following step by step the instructions in this video tutorial, trying out for yourself. This is a great experiment to perform with the kids.

How To: Make gooey slime for kids

Make Slime! This one is easy. Just mix equal parts of glue and water and then add an equal part of liquid starch. Just like that you have gooey slime. The more you play with it the more fun it becomes. This acclivity causes the polymer chains in the glue to cross link with chemicals in the starch. The result is an awesome stretchy slime.

How To: Make a maglev motor

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

How To: Tell if an egg is raw or boiled with Krampf

You can easily tell if an egg is raw or hard boiled without breaking the shell, as long as you know a little science. This experiment uses physics to show how if you spin an egg you can tell if it's insides are viscous or solid! Thanks Happy Scientist Robert Krampf for this great tutorial on the science of eggs and physics of rotation.

How To: Light a '57 Chevy in the photo studio

Watch this instructional photography video with Jim Talkington and learn how to light a '57 Chevy in a photo studio. This is a beautiful car, but it prevents some challenges in photographing the shiny paint and chrome surface. In this tutorial, experiment how to set up the lighting. This video is great for car aficionados. Practice these tips and improve your photography skills.

How To: Calculate percent yield

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...

How To: Transfer sound over a laser light

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.

How To: Set up and use IDE / SATA to USB adapters

If you're a certified computer nerd along the lines of NASA scientist Howard from "The Big Bang Theory," then you know how frustrating it can be transferring large amounts of data between an external hard drive or other drive and your main computer, especially when you're in a rush to get experiment data in. Usually this requires mounting the drive into a system or external case first.

How To: Test for boron with curcumin

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.

How To: Make a wheel spin with angular momentum & inertia

In this video, we learn how to make a wheel spin with angular momentum & inertia. You will need: a bicycle wheel, a lighter, and a couple of strings attached to the top of a deck. Now, take the bicycle wheel and hang it on the strings on both sides of the wheel. When you turn the wheel it will fall off of the strings. Start the wheel spinning again, then light one of the strings on fire. When you do this, the string will fall off but the wheel will keep on spinning while rotating. Do this exp...

How To: Make a gooey quicksand-like non-Newtonian fluid with cornstarch

Oobleck, a word coined from the Dr. Seuss book "Bartholomew and the Oobleck," has contemporarily come to define the substance created from mixing cornstarch and water. This mixture is notable for its dilatant properties, and as an inexpensive and non-toxic Newtonian fluid. While seemingly liquid, under pressure, the substance reacts as a solid. Gentle treatment, however, will allow the material to remain in its fluid state. More simply put, this sh*t is crazy.

How To: Play 12-bar blues variations on guitar

In this video, we learn how to play 12-bar blues variations on guitar with Justin. You will simply be taking the regular pattern and adding in variations you can do. You will end up with the ability to improvise with different songs, which will make you have a unique sound to all your music. One of the things you can do is to start to play notes on a different string, or move the sound of the note up and down as you are playing it. Changing up the pattern can add a cool blues sound to your mu...

How To: Spice up your desktop with free Windows 7 themes

In this video, we learn how to spice up your desktop with free Windows 7 themes. These are provided on the Windows website, where you can search through the personalization gallery. You can choose from a number of different themes that best fit your personality and preferences. You can change not only what you see, but also the sounds that you hear! If you don't see a theme that you like now, check back often because there are always new themes being uploaded to the website. These are all fre...

How To: Grow bacteria with agar & petri dishes

In this tutorial, we learn how to grow bacteria with agar and petri dishes. First, prepare your agar by swirling it and then pouring it into an open petri dish. Next, close the cap to the petri dish and let it sit for an hour. Next, grab a q-tip and swab it on a surface you prefer. After this, swab it onto the petri dish and let it sit for around a week. When you come back to the dish, you will see all the bacteria that has grown! This is a great science experiment to do for children in schoo...

How To: Draw a woman's head

Learn how to sketch a realistic 3/4 profile of a female head and face. Begin by drawing a simple circle. Add a few more construction lines which outline the general shape of the drawing. The rough features of the face come next. Now you are ready for more artistic touches, such as shadows underneath the nose and lower lip. Experiment with different brushes and intensity of color until you like the result. Learn to play with lines and shadows to create a sketch of a female head.

How To: Draw and paint a female gypsy dancer

Impress others with your artistic skills by learning to paint a gypsy dancer on the computer. Construct a rough sketch line drawing of a girl dancing. Use a soft brush to airbrush some colors in. Use as few colors as possible. Don't worry about the value yet. This will be a basic map of what colors you want to use. Start adding darker colors in. Use a highlighter to add lighter colors. Use the soft edge brush to blend and a hard edge brush to define forms. Experiment to your liking. With this...