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Hobbies & Science : Society & Culture & Entertainment
How to Calculate the Period of Rotation
The period of rotation is the length of time it takes for an astronomical body to complete a full revolution, in other words, to complete one full rotation about its axis. As an example, the Earth's period of rotation of approximately 24 hours, which is the reason that a day on Earth is 24 hours lon
How to Paint With Bronzing Powders
Using bronzing paints and powders can help create an old world-lustre for new objects, or help restore your favorite antiques to their former glory. Commercial bronzing paints can be found ready to use, made by combining bronzing powder and a clear base. They are easy to find
How to Build My Own Headboard to Mount on My Bed
If you want an upholstered headboard, but don't want to pay designer prices at a furniture outlet or boutique, building your own is an afternoon project that could save you hundreds of dollars. A DIY headboard gives you the benefit of total customization -- you can choose whatever pattern and fabric
How to Make a Laptop Using a Pizza Box
Children are obsessed by the adult world. They watch adults working on laptops, for example, and recreate their toys into these computers for pretend play. According to Scholastic, children learn by imagining and copying adult behavior. Children ages three to five are experimenting with social and t
How to Convert BTU to Kilocalories
When you heat water, you add energy to it, and the amount of energy you add determines the increase in temperature. A kilocalorie is amount of heat required to raise the temperature of 1 kg of water by one degree Celsius and a BTU is the amount of heat required to raise the temperature of 1 lb. of
How to Make a Wood Roman Shield
A Roman shield can be used as part of a theatrical costume, fancy dress party or school project. Making one out of cardboard is much easier, but will be less authentic and so wood is preferred. Roman shields can be either round or square and were normally coated in red leather. They also had a metal
How to Calculate the Heat Needed to Convert a Solid to a Liquid
The heat required to cause a solid to change phase and become liquid is the heat of fusion for the substance. Most people will recognize the phase shift that occurs when water in the solid form of ice gains heat from the environment and changes phases from solid to liquid. The amount of heat require
Crafts With Wooden Cigar Boxes
Wooden cigar boxes are a great way to keep craft supplies organized, but they make great crafting material too. Incorporating the box into an unexpected everyday item is an innovative way to turn heads and get noticed.
Decoupage Ideas for a Wooden Box
Use new or recycled wooden boxes to create a variety of decorative and functional display pieces for your home. Decorate an unfinished, stained or painted wood box using a decoupage medium to adhere and seal assorted papers. Turn the boxes into accents for a desk or table, or use them for storage an
How to Make a Simple Sun Catcher
Sun catchers sold at home decor and trinket shops feature stained glass panels in a variety of colors to "catch" the sunlight and illuminate the glass. Organize a classroom or rainy day activity for your children that allows the kids to design simple sun catchers to display in a classroom or kitchen
Alternative Processes to Photosynthesis
Photosynthesis is the process by which plants harness energy from the sun to create the ingredients necessary for survival. The three principal things needed are light, water, and carbon dioxide. Some plants, such as ones located in the lower parts of rain forests, are unable to collect the three in
How to Cut Limestone With a Chisel
Limestone is a sedimentary rock formed over millions of years and is predominantly composed of a crystalline form of calcium called calcite. Although it may have a similar appearance to marble, limestone is significantly softer and cheaper than marble and is therefore a preferred rock for beginner s
What Is a Raku Kiln?
Raku is a kind of pottery used mainly for decoration or holding dry materials, since the vessels are too porous to be used as water vases. Raku pottery is known for its distinctive cracking pattern in the glaze and its intriguing colors. A kiln that can be used to create raku pottery is a raku kiln.
How to Make a Spiral Pendant From Copper Wire
If you are a jewelry maker who has grown tired of beads, wire working and wire wrapping provide an alternative that allows you to create findings and focal elements that can shine on their own or be combined with "found" treasures. Mastering the techniques can be challenging at first, but the time s
How to Solder Copper Tape
Copper tape is a short name for copper foil tape. Copper tape is used in making stained-glass projects. The tape provides a copper line directly between glass pieces or beside glass leading. The tape oxidizes so the area needs to be cleaned with emery paper prior to soldering. The open copper foil t
LED Bulb Specs
The specification center beam candlepower measures intensity of light at the bulb's centerULTRA.F/Stockbyte/Getty ImagesLight-emitting diode (LED) lighting involves the use of a semiconductor diode. Upon the receipt of voltage, or electric current, the diode emits light. LEDs uses include...
Homemade Citronella
To keep mosquitoes, chiggers and other insect pests away from you when working or playing outdoors, you'll need to protect yourself. While you can buy a commercially produced spray full of any number of chemicals, a simple homemade citronella insect spray may be all you need. Once your homemade citr
How to Identify Fossils From a Rock
Fossils are beautiful pieces of Earth's history that allow scientists and students to understand the inner workings of our planet and the evolution of life. Finding and collecting fossils is a family fun activity that can teach children about organisms that are no longer living today. Many collector
How to Care for Luna Moth Cocoons
With velvety green wings that seem to shimmer, the luna moth is considered to be one of the most unique moth species in the United States. With a wingspan of up to 4.5 inches, they are also one of the largest. When in caterpillar form and ready for metamorphosis, it builds a cocoon using leaves and
How to Anneal a Brass Trigger Guard
Many pistols have a brass trigger guard attached to the pistol with screws. The brass guard itself gets brittle over time due to the warmth of the hands and the heat from firing the pistol. Anneal the trigger guard to add strength to the metal. The process to harden the metal is done with the anneal