How to Identify a William Rodgers Sheffield England Fighting Knife

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A William Rodgers Sheffield England fighting knife is a design of the Fairbairn-Sykes fighting knife. The Fairbairn-Sykes knife was designed just before World War II and became famous for its use by British commandos. The knife was so effective that it remains in use today. William Rodgers Sheffield

Woodturning: Rotation of Bowl

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Information About Triglycerides

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Triglycerides are fatty acid molecules that circulate in the blood. Triglycerides are carried to adipose tissue where they are stored and later returned to cells where they are used for energy. Triglycerides are found in the fats and oils in your diet. They are comprised of an alcohol group and bond

Lock Picking Levels in WoW

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In "World of Warcraft," rogues, blacksmiths and engineers have the ability to open certain locked containers found throughout the environment to obtain gold, basic crafting materials or even unique and hard-to-find goods. Players who play as rogues will have the ability to do this inherently after t

Materials and Instructions for Etching Glass

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Glass etching is a crafty way to add a subtle and inexpensive decorative touch to wine glasses, windows or vases. You can even use the glass etching technique to add a border to a mirror's corner or a design to a glass block to create a night light. Glass etching may seem like an intimidating projec

Making a Reflecting Telescope

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Main Tube of the TelescopeTo build a reflecting telescope, you will need a concave mirror which has some magnification like those found in bathrooms. Determine the focal length of the mirror. This can be done by taking the mirror outside and finding an area where the sun is in front of...

How to Wire Up Headlights Directly to a Battery

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Automobile headlights can be used to illuminate work areas, crawl spaces, and many other areas where AC power may not be available. In order to use headlights for these applications, they must be wired directly to a car battery or some other source of DC power. The headlight and battery combination

How to Measure the Density of Water

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Density is the measure of mass per unit volume. It is present in a large portion of our lives, whether in buoyancy or salad dressing. When two substances of different densities are combined, the less dense substance will float on top of the more dense substance. The density of pure water is, by defi

Butterflies of the Mojave Desert

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The Mojave Desert is the smallest desert in North America, but it is the home of a number of different species, including 250 types of ephemeral plant, as well as tortoises, lizards, snakes and insects. Butterflies come to the Mojave because of the many types of flowering plants.

Tips for Making a Loft Bed

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Making the baseOne of the main benefits of making a loft bed is that it can help free up space on the floor by raising the bed up so that the space under it can be made usable. Of course, this requires a solid and sturdy base. Many loft beds can be purchased via kits which can be...

Gem Cutting & Polishing Tools

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Gemstones in the rough give hints of what they look like when cut and polished. Crystalline stones are faceted into jewels, whereas petrified wood, obsidian and other semi-precious rocks are shaped into cabochons. It all begins with saws and ends with polishing.

How to Read a Doppler RADAR Screen

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Doppler radar is capable of detecting shifts in outgoing and incoming signals. The radar unit can then decide if the object is moving toward or away from the unit, and how quickly. In the case of weather, these objects are rain droplets or snow flakes. Doppler radar can also measure wind velocities.

Handheld Tools for Woodworking

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Handheld woodworking tools are a woodworker's most intimate friends.planing a table top image by leemarusa from Fotolia.comA comprehensive list of handheld woodworking tools would span hundreds or perhaps thousands of pages. Luckily, Christopher Schwarz--woodworking pro at Popular...

How to Assemble the Smith & Wesson 40VE

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The Smith & Wesson 40VE is a .40-caliber handgun designed for use as a primary sidearm for police and military forces worldwide, as well as for civilian owners. It features a 14-round magazine, and comes from the "Sigma" line of S&W handguns. As with all handguns, you need to know how to disassemble

Physics Activities for Middle School

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Middle school is a time to build students' physical intuition, before they can learn physics through algebraic equations and calculus. Newton's car, liquid barometers, and lasers pointed through jars of water help introduce students to forces and light properties in ways that may...

How to Find Prices on Old Stamps

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The stamp collection you inherited from your grandfather may have more than just sentimental value. Old postage stamps are a big business. For example, the world's most expensive stamp-the 1855 Swedish "Treskilling Yellow" with a misprint-sold for about $2.3 million in 1996. It sold again in 2010 fo

Exotic Hardwood Environmental Facts

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Harvested from forests in South America, Asia, and Africa, exotic hardwoods are prized for their rich hues and durability. Exotic species include walnut, cherry, mahogany, ipe, rosewood, and teak, which are commonly used in hardwood floor and furniture construction. Despite their luxury appeal, use

How to Make 3D Glasses

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With the new technology TV shows can now be watched in 3D. These will work great for the 3D Super Bowl commercial at half time. Instead of buying glasses it is easy to just make your own.

Induction Furnace Technology

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An induction furnace is used to heat or melt metals with electromagnetic forces that generate heat directly in metal, rather than using pure heat created from burning gas. These furnaces are generally faster, more dependable and much more accurate than traditional furnaces, but their application is

How to Make a pH 3 Nitric Acid Solution

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Chemists use the pH scale to describe the acidity of a solution. Mathematically, the pH of a solution is equal to the negative base ten logarithm of the hydrogen ion (H+) concentration, in moles per liter. Based on this, you can calculate the amount of concentrated nitric acid (HNO3) required to mak