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Hobbies & Science : Society & Culture & Entertainment
DIY Analog Volt Meter
A voltmeter measures the difference in electrical potential between two points in a circuit. Commercial voltmeters are highly accurate and available from electronics stores. You can also construct a simple analog voltmeter at home from available materials. This type of voltmeter is a common school p
How Does a Photovoltaic Panel Work?
Photovoltaic PanelsSolar Panels on a roof, courtesy www.ecobob.coPhotovoltaic, or solar, panels are devices designed to harness the energy in light and change it into usable electrical current. Photovoltaic panels are mounted on roofs, the tops of cars or other areas where they receive...
Lipo Charging Instructions
LiPo batteries, or lithium polymer batteries, offer an extremely efficient and lightweight method for storing electricity. They can store 300 percent more energy than comparable nickel cadmium batteries, and are 10 to 20 percent lighter. For these reasons, they are very popular for use in remote con
5 Minute Epoxy Instructions
The uses for 5 minute epoxy are numerous. You can glue things together that conventional glues cannot begin to hold. It glues virtually anything together. Metal to rock, glass to leather, you can just about name the material and it will hold it there. Like all things, it has its limits, but for hold
Cottonwood Vs. Basswood
Basswood and cottonwood trees are very similar and wood from these two species is even used in the same applications. But aside from size (mature cottonwoods are 25 feet taller and twice the diameter of basswood) there are a few other subtle differences.
Radioactive Damage in Solar Cells
According to the National Aeronautics and Space Administration (NASA), three thousand artificial satellites orbit the earth. They get their power from solar cells, though the ones used in space are different from the kinds we normally see on rooftops. Radiation in space has proven damaging to solar
Will Vinegar Used to Kill Burr Clover Hurt a Big Oak Tree?
The same vinegar you use around the house for cooking and cleaning serves as an effective killer against weeds and pesky grass. Distilled white vinegar, apple cider vinegar and other types of vinegar have a high acidity level that drains water and moisture from plants and weeds, killing the pests sl
How to Build a Freestanding Wardrobe Closet
Storage space is at a premium in many homes and apartments. Learning how to build a freestanding wardrobe closet is an inexpensive way to add to your storage and preserve cherished clothing and possessions. The use of the cedar plywood paneling inside will also keep out pests.
How to Raise Black Swallowtail Butterflies
Swallowtail butterflies are the largest butterfly species in the States. These beautifully marked and colored butterflies range from southern Canada down to the northern parts of South America. The swallowtail butterfly emerges from its chrysalis during the months of April and May and is easy to spo
How to Build a Zwinky
A zwinky is an avatar-type character that you can create on the Zwinky website. You can select from a menu of options for your character's appearance and lifestyle, then use your character to play games and build points. Use these points to buy accessories and to play more games. If you're not havin
How to Build Your Own Photo Light Box Cube
A light box is used by artists to back light images, allowing the artist to trace the image. It is also used to look at negatives of photos. A light box can be purchased where artist supplies are sold, but building your own will be much less expensive. By building your own light box, you can make it
Instructions for Digital Multimeters
Digital multimeters are instruments commonly used to measure resistance, voltage and currents in electrical devices and circuits. They are preferred to analog ones because their digital display makes them easier to read; they are also more accurate. Multimeters are essential in circuit and component
How to Hang Model Airplanes
The painstaking process of building a model airplane is rewarded with a realistic result that can be a decor feature in any enthusiast's room. Hang your model airplanes from the ceiling to keep them safe and create an attractive conversation piece. You can make your own airplane "hangers"
How to Calculate Bankfull Discharge
Calculating bankfull discharge is one of the important methods engineers and scientists use to help plan and design stream channels near urban areas. Bankfull discharge is the maximum amount of water a specific channel can carry before water overflows the stream bank and causes flooding. Students
How to Paint Model Airplanes
Painting is an important part of completing each model airplane project. The complexity and detail of each project will vary with the maker's needs. Detailed painting and special techniques will develop with experience. Painting model airplanes is not difficult. It only requires patience, practice,
Solar Energy Basics
Solar energy is the practice of converting light and thermal energy from the sun into usable forms. This is generally broken up into methods of converting to electricity, called solar power, or converting it to heating applications, called solar thermal. Solar energy is used in residences, office bu
Endangered Animals in the 1950s
Unfortunately there are many species of animals that are endangered and at risk of becoming extinct. The list of endangered animals the 1950s is less than in the 21st century. Looking back, a trend becomes apparent in the causes of some animals' extinction or near extinction. Most were due to poac
DIY: How to Make Art From Reclaimed Wood
Reclaimed wood can be found at salvage yards or you can often purchase it directly from the owners of run down barns or homes slotted for demolition. Look for doors and cabinets at garage sales for reclaimed wood. Choose reclaimed wood in different colors and choose interior and exterior wood sectio
How to Measure Wind Speed & Central Pressure
Whether you're interested in meteorology or simply want to gauge the weather without a newscaster's help, you need two key pieces of information. The first is wind speed, which can tell you if there's a calm before a storm, gale winds blowing or light breezes coming your way. The second is central a
How to Create a Stained Glass Look
The translucent beauty of real stained glass is an expensive way to decorate windows and other glass in your home---not to mention the difficulty and precision involved with making stained glass works of art. It is possible to create a stained glass look on any glass surface with a simple painting t