Private Principles Search Results

How To: Make a cartesian diver

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.

How To: Avoid wrong answers on the SAT critical reading area

In this Education video tutorial you will learn how to avoid wrong answers on the SAT critical reading area. Five principles to keep in mind are rephrase the question and predict the answer, answer the question being asked, find evidence in the passage, extreme answers are suspicious and finally remember a little wrong is all wrong. To rephrase the question, read 2 lines before and after, ask the question in your own words and find the answer choice that best matches your prediction. Now comi...

How To: Derive the annual compound interest formula

In this video tutorial the instructor shows how to derive the formula to compute interest compounded annually. He starts with explaining the basic concepts like principle which is the amount you borrow and the rate of interest or annual percentage rate (APR), which is the rate at which you pay the interest up on the borrowed principle. He shows that the amount after the end of one year is amount A = P(1+APR),and he goes on and generalizes how to compute it for n years. This video shows how to...

How To: Experiment the law of inertia

Newtons proposed the concept of inertia. According to him an object at rest tends to stay at test and an object in motion tends to continue in motions unless acted up on by an external force. This is the principle of inertia. The tendency of the body to continue to stay as it was is called its inertia. You can demonstrate this principle with a simple experiment. As shown in the video when the hoop is pulled out the pen cap falls in to the bottle. Here the hoop is acted upon but the cap is not...

How To: Fold and fly a paper hang glider

Hang gliders are exciting, but if you can't fly in the sky, free as a bird, then try the next best thing-- making a paper version that you can make soar through the air. This four-part series from Science Toy Maker will show you exactly how to fold and fly an origami paper airplane hang glider, plus you'll get valuable information behind the principles that make it work. Also watch the last video for the principles that make it possible for life-sized hang gliders to move along the sky withou...

How To: Do the salsa tai chi flip

In this video you will learn a simple double-handed turn using the same principles as leading a right turn. Then you'll learn a slick little combo for switching hands as a starter for any other combos you might learn in your life!

How To: Maintain that centerline

This episode discusses the four causal aerodynamic factors leading to the overall left turning tendency that an aircraft experiences during flight. Join Scott Ludwig and Seth Hardley as they teach about Torque Effect, Spiraling Slipstream, Gyroscopic Precession and P-Factor and how these principles will affect your aircraft on your next training flight. During the takeoff roll, remember to maintain centerline at all times and don’t get lazy feet.

How To: Build a laser microphone

Listen to conversations over long distances with a homemade laser listening device. All you'll need is a laser pointer, tripod, old pair of headphones, photocell, a recording device, and the step-by-step instructions in this how-to video. The creator of this video tutorial does not mention the need for sophisticated software. But the principle is quite sound. If you can figure it out, you can eavesdrop and spy on whoever.

How To: Landscape the entrance area to a business

When customers come to your place of business, you want them to feel welcome and comfortable. In this video tutorial, Dave of Growing Wisdom discusses design principles to keep in mind when you're redoing the entryway to your business. For more and better information, and to get started redoing the entrance to your own business establishment, watch this landscaper's guide.

How To: Create a bouncing ball animation in Flash

The bouncing ball animation in Flash is usually the first assignment covered in an animation class because it demonstrates some of the most basic principles of a line across a stage. This trick is quite easy to learn and this tutorial will take you through all of it, step by step. Once you master this animation, you will find it much easier to create more complicated ones.

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