Sign in
Recover your password.
A password will be e-mailed to you.
Browsing Category
Hobbies & Science : Society & Culture & Entertainment
How to Use Levers & Pulleys
Levers and pulleys are prime examples of simple but effective machines. Each has been designed to utilize efficient energy displacement to work against gravity to move objects. The greatest thing about these pieces of equipment is that -- at their most basic -- they do not require electricity. They
Glass Grinding Tutorial
Some stained glass artists do a lot of grinding, while others barely grind glass at all. It depends on your cutting proficiency, the intricacy of your pattern and how you were taught. Leaded work requires less grinding because the pieces are usually larger and lead came hides many irregularities of
PH Meter Training
PH meters detect the concentration of hydrogen ions in a matrix (usually a liquid, like water) and yield a value ranging between zero and 14. Most pH meters are easy to use and require very little training. However, many institutions are required to document expertise so must offer official training
Great Plains of North America Animals & Plants
The Great Plains stretch from northern Canada to southern Texas, and are host to a great diversity of life. Despite the limited rainfall and harsh winter and summer seasons, plant and animal life thrives. These difficult conditions have sparked adaptations in the way plants and animals survive. Only
How to Make a Dart Gun Without Straws
Dart guns have the advantage of an S aerodynamic shape that allows for greater precision when a dart is flying at a target. Dart guns that rely on breath to power them are noisy and can betray your presence. You can make a dart gun that is powered by a rubber band instead by using a few common house
How to Reload Rifle Ammo
Knowing how to reload your own rifle ammunition will help reduce the cost of bought ammunition but most hand-loaders learn the technique to improve their accuracy. They also fine-tune loads according to their preferences and hunting style. With the right equipment, you can easily load a few rounds o
How to Process Water to a Gas
Water can exist in one of three states of matter: solid, liquid or gas. Most of the water you encounter in daily life is in liquid form, such as lakes, oceans and drinking water. When frozen, water becomes a solid, which you will recognize as ice. When heated to the correct temperature, water will b
How to Build a Wooden Filing Cabinet
Wooden filing cabinets are both functional and beautiful pieces of furniture in the office. They should not only serve to maintain office organization but also enhance the aesthetics of the space. Building a wooden filing cabinet to match the overall style of the other office furniture is a good opt
How to Get Tons of Caps on "Fallout 3"
Caps are the only usable currency found in "Fallout 3" and are needed to purchase weapons, ammunition, Stimpacks and food. While Caps are an absolute necessity, they can be frustrating to obtain. Completing tasks and selling items are the fastest ways to earn Caps in the game. If you are trying to e
How to Measure Yeast Respiration
In the beginning of your biology laboratory career it is inevitable that you will run into the yeast respiration experiment. This simple experiment is a starting point many instructors use to introduce their students into the world of biological reactions. In this experiment the yeast, a living or
How to Calculate Footcandles
Considering that light is so fundamental to human activity, you might think that the measurement of light would be straightforward, maybe even simple. Almost the opposite is true. To begin with, there are two completely different ways of measuring light. Radiometry measures optical power, while phot
How to Use Ball Bearing Swivels
Every time your fishing line gets a twist in it between the rod and the lure or the rod and the fish you are catching, it weakens. If the twists are few, the weakening is negligible, but as the number of twists in the line increase, the weakening becomes increasingly substantial. Eventually the line
How to Beat Escape From Chem Lab
In the online adventure game "Chemistry Lab Escape," you only have one goal: find a way to unlock the door in the lab and get out. The game provides you with three lab tables with supplies, as well as a periodic table of elements. You can click on any area of the lab and collect items into your inve
Glass Engraving Techniques
Some of the many techniques that can be used to engrave glass include point, drill, copper wheel, laser and sand engraving. The technique is to carve, cut or mark the glass to change how the light shines through it, creating a pattern that can have texture, depth and shading.
How to Calculate Frequency of a Photon of Light
Light is electromagnetic waves, and the frequency is one of the wave characteristics. While the period is the duration (in seconds) of one full wave, the frequency is the number of periods per second and is measured in Hertz (Hz). The frequency of light photons can be calculated either from the phot
Formula for Calculating the Earnings Available for Common Stockholders
Provided that you have access to the appropriate financial data, calculating the earnings available for common stockholders is relatively simple. The calculation involves first finding the amount of dividends paid, and then finding the amount paid per share. Using the number of common shares outstan
Advantages & Disadvantages of Altitude
As your altitude above sea level increases, numerous atmospheric conditions change. Humans are not used to living too far above or below sea level, so many of these changes are disadvantageous. However, with the right adaptation, the atmospheric effects of high altitude can be an advantage once you
How to Load Plywood
Plywood is manufactured in 4-foot-by-8-foot sheets. If you are buying large quantities of plywood, forklifts are used to load and unload it. If you're hauling single sheets or even multiple sheets to your shop or home from the home improvement store, use a pickup truck. Almost all pickup trucks, eve