Browsing Category
Hobbies & Science : Society & Culture & Entertainment
Buying & Pricing Gold Coins in Texas
Buying and selling gold coins is a great hobby that can produce significant rewards. Many people pursue the activity as a business venture, buying and selling gold coins for profit in a retail location or at trade shows. Whether you enjoy collecting coins for the beauty and history, or for financial
PCB Layout Tips
Try and keep each integrated circuit oriented the same way.circuit board image by dwags from Fotolia.comWhen it's time to move your circuit off the breadboard and into a practical application, you will have to design a printed circuit board, or PCB. PCB layout can be daunting for the...
Difference Between Astrology & Astronomy
Though the two are historically related, astronomy and astrology are quite different by today's standards. Astronomy is a science that studies the matter of outer space and the evolution of it. Astrology studies the positions of celestial bodies and the ways this can affect people's everyday lives.
How to Use Your Yu-gi-oh! 5D Zombie Deck
The Yu-Gi-Oh! card game involves strategically building your deck using monster, spell and trap cards to defeat your opponents. A Zombie deck is a deck that uses Zombie monsters, traps and spells. Effect cards in a Zombie deck allow you to revive monsters from your graveyard and inflict damage on yo
How to Build a Styrofoam Sailboat
Build a model Styrofoam sailboat with children as a summer-themed arts and crafts project. Because Styrofoam floats above water, children can play with the sailboat after construction inside a bathtub or swimming pool. You can build homemade Styrofoam boats at a children's pool party and hold sailbo
How to Calculate Column Volume
If you want to construct a column and want to know how much material to buy, or if you are curious as to the displacement of an existing column, you will need to measure the exterior dimensions. A column can be thought of as a large cylinder, and by applying the formula for cylindrical volume, you c
How to Use a Wire Measuring Gauge to Determine Wire Size
There are different types of wire measuring gauges depending on where you live in the world. In the United States the accepted wire measuring gauge is the Brown & Sharpe or the American Standard wire gauge. It is round and has slots numbered from 0 to 30. The wire gauge measures wire thickness as w
How to Engrave Metal Stamps
Metal stamps are a great way to leave a custom mark -- whether it be your signature, a logo or other recognizable icon -- on just about anything. While rubber stamps serve the same function, they are not as durable as those made from metal. To create your own custom stamp, you must engrave your desi
What Are Hinged Stamps?
There are multiple ways to display postage stamps in an album. A common and inexpensive method is using hinges. A hinged stamp is one that has been mounted in an album with a hinge.
How to Convert From a Quill Stem to a Threadless
The bicycle stem is the part connecting the handlebar to the fork. Older bikes use a quill stem, which extends into the fork. Most new bikes have threadless stems. A threadless stem can be fitted to a conventional, threaded fork with an adapter and a few common hand tools. The hard part of the job m
How to Use an Infrared Spectrometer
An infrared (IR) spectrometer is a device used in chemistry labs to determine the identity of a molecule. A beam of infrared light scans the sample and detects differences in the vibrational frequencies between the bonded atoms. A computer is attached and used to display the data, and the data the
Definition of IC Voltage Regulator
AC voltages are subject to spikes and dips from occurrences such as lightning. Power supplies that use them as input will also have these surges. The role of an IC (or integrated circuit) voltage regulator is to help control these variations in the voltage.
Instructions for Easy Science Projects
Many schools require students to complete one science project each year to be displayed at the science fair. These science projects don't have to be complicated to win awards. Sometimes the best projects are easy. It is important that any student who attempts to do an easy science project is careful
How to Use Wood Lathe Tools
A lathe wood turning kit requires an accurate set of tools. Learning to use these tools is essential in the proper operation of a wood lathe. The tool kit includes gouges, skews, parting tools, spear points, calipers, dividers, and rulers. Each tool has a certain function for different projects. Whe
Air Hog Troubleshooting
Air Hog makes a variety of remote control vehicles, but may be best known for their helicopters. All of the helicopters come in different sizes, equipped with a variety of features. The helicopters are designed for individuals 12 years and older. Air Hog also makes the smallest RC helicopter on the
The Difference Between Clear Epoxy Resin & Clear Epoxy Glue
The epoxy adhesives are a group of high-performance bonding agents that includes cyanoacrylate, polyurethane and acrylic, among others. The differences among the various types of epoxy adhesives mostly depend on what purposed they are used for. The variations are made with the help of hardeners, whi
How to Price Coins
In order to be a well-informed coin collector or a successful coin dealer, you need to know how to accurately price your coins. Pricing coins--specifically, grading them correctly--takes a great deal of practice, but for any serious numismatist, this is a must-have skill. Because the market value of
How to Verify the Age of a Colt Revolver
It can often be difficult to determine the exact age of a Colt revolver by simply looking at it. Many models and styles were carried over from year to year. By identifying your gun's model and serial number, you can determine the exact year in which your revolver was manufactured. Knowing the year o
How to Find the South Celestial Pole
The Southern Celestial Pole may be defined as the point around which all stars in the sky---including the Sun---rotate in the view of a Southern observer. Astronomers locate it by measuring angles between stars and calculating the pole's position with the latitude of the surrounding area. For the la