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Hobbies & Science : Society & Culture & Entertainment
How to Identify Old Tools
Old tools are really amazing when we consider the thousands of electronic gadgets available today. Most antique collectors and craftsmen derive great joy from seeing a tool that a blacksmith in a little rural town hand-forged a hundred years ago. A few tools carved from wood or hand-forged when our
How to Make Textured Walls With Drywall Compound
Standard drywall or plaster and lath walls in most homes are smooth. However, in some rooms you may want to give one or all of the walls a little more depth by creating a textured surface. A textured finish on a wall can also be used to hide imperfections in its surface. You can create a textured fi
How to Paint a Wood Sign
Wooden signs have been popular home decorations for many years. Create a indoor wood sign from new wood or by refurbishing an old sign. Clean and strip old wood before you stain or paint it with a new message. The end result will be more attractive and long lasting if you take the time to prepare t
How to Sharpen a 290 STIHL Chainsaw
The STIHL 290 chainsaw is used for light logging, brush clearing and firewood cutting. Though it is not a professional grade chainsaw, the chain still needs to be sharpened for proper use. If you're uncomfortable sharpening a chainsaw chain, consider having spare chainsaw chains with you on the job.
How to Grade the Condition of Antique Pocket Watches
Antique pocket watches are fun to collect and a joy to own. The older watches are especially beautiful and many people admire the excellent workmanship that was required to make these wonderful machines. If you are going to collect antique pocket watches you must know how to grade their condition
Definition of Nitrites in Drinking Water
All public water supplies must abide, by law, to standards and regulations known as the National Primary Drinking Water Regulations. Set by the EPA to protect against unsafe levels of chemicals in public water, these regulations control the acceptable levels of nitrates and nitrites in drinking wate
What Happens to H2O When Cooled?
Water molecules contain two atoms of hydrogen and one atom of oxygen, written as H2O. All matter exists as a solid, liquid or gas, depending on how fast its molecules are moving. The gas phase of H2O is steam; the solid phase is ice.
What Happens to Air Temp & Dewpoint Temp in a Descending Air Mass?
Descending air masses, known as areas of high pressure, have a significant impact on both temperatures and dewpoints. High pressure will lower dewpoints; the change in temperature will depend on the time of year, however. In the Northern Hemisphere, for example, summer highs will produce higher temp
How to Aim a Flat Antenna
Obstructions such as interior walls and other electrical devices can sometimes disrupt and weaken broadcast signals producing a blurred or static-filled picture. Tall outdoor structures and buildings can also interfere with your television by reflecting multiple signals to your set; this problem, kn
How to Add a Light to a Grandfather Clock
Grandfather clocks are powered by a spring and pendulum system that requires no source of power other than monthly winding. However, reading the clock requires having a light source shining on its face. If the light source is removed, the clock is impossible to read. This problem can be solved by in
How to Make a Launch Pad for a Rocket
Launching model rockets has been a favorite hobby for many spacecraft enthusiasts since their introduction to the public in the early 1950s. The rocket launching system includes a rocket, launch controller and a rocket launch pad. A launch pad is the platform used to launch the rocket. It consists o
Aircraft Propeller Wood Properties
Wood aircraft propellers must demonstrate strength and durability.propeller image by Tomasz Pawlowski from Fotolia.comAirworthy wood must withstand the effects of humidity and heat. So wood grain, growth rings, strength and stiffness are what the Commonwealth of Australia's Department of...
How a Oxygen Generator Works
What is an Oxygen Generator?Oxygen generators are also called oxygen concentrators. They come in many sizes and have several different functional properties. Oxygen generators are used in industrial conditions to meet environmental worker's conditions, on airplanes to provide passengers...
What Is the Method for Making a Woodcut?
According to Wendy Thomson, author of "The Printed Image in the West: Woodcut," woodcut art originated in eighth century Japan where it was used to print textiles before the process was applied to paper. The process involves inking a raised surface then pressing it manually or by a machine to produc
What Are the Effects of Acidity on Metals?
The effects of acidity on metals can be beneficial or detrimental, depending on the use intended. Acids are used to beneficial effect by jewellers on precious metals, such as gold, silver, platinum or palladium, to determine the appropriate karats, the metal type from the color change and the genuin
Coin Collecting Gifts
So, there's a coin collector on your gift list, and and you're stumped. Unless you happen to be a collector yourself, trying to find the right coin is probably not the best idea. You may, or may not know what this collector wants. And, unless you are a sharp bargainer, you will probably...
Tools Used by Astronauts
Tools like safety tethers keep astronauts from floating away during spacewalks.cosmonaute image by photlook from Fotolia.comBecause tools you would find at home-improvement or hardware stores aren't usable in the harsh environment and specialized work areas of space, the National...
A DIY Noise Suppressor
Making your own noise suppressor isn't difficult and can make your shooting experience much safer over the long term. Given that repeated exposure to the noise generated by gunshots can damage your hearing, the relatively small investment of time and energy in crafting your own noise suppressor may
How Does Physical Science Affect Our Lives?
The study of physical science, or studying the physical world around us, affects many aspects of our daily lives. You see these benefits in the ability to predict weather, the creation of maps, cars and our foods. As scientists continue to study physical science, your benefits will increase, as new