All organisms go through a life cycle that describes how they change from their origin to their ultimate end. Although the great majority of multicellular animals originate in the fertilization of an egg by sperm there are some exceptions, and the planarians are examples of this. Although new indivi......[Read More]

With so much to do at Christmastime -- buying gifts, baking treats, mailing cards, accommodating overnight guests -- buying a tree and stringing lights onto it might seem like too much to ask. A pre-lit Christmas tree is a lifesaving solution to the harried holiday decorator. Pre-lit trees are made ......[Read More]

Weather conditions dramatically affect a nitro RC car's performance. All nitro engines must maintain a proper engine temperature---typically between 220 to 240 degrees---in order to reach optimum performance. An engine requires maximum airflow around the cylinder head and a richer air/fuel mixture w......[Read More]

Aircrafts are made of the strongest aluminum alloys.buisness jet image by Andrew Breeden from Fotolia.comThe metal plating on aircraft and spacecraft contains aluminum, the most common metal on earth. When other metals are mixed with the aluminum, they form aluminum alloys. Only the.........[Read More]

A loofah is a coarse natural sponge that comes from the fruit of a loofah, or luffa, tropical plant. Because of its rough texture, loofah sponges are commonly used for skin exfoliation. The sponges are effective at removing dead skin and buffing rough areas of the body like the feet, elbows and knee......[Read More]

Self-made model cars rarely look as nice as store bought ones, but they allow children to be more creative.corner car image by easaab from Fotolia.comOne of the key phrases in the car industry at the moment is "environmentally friendly." Full-scale cars are being designed to have only a.........[Read More]

Lee Precision, Inc. is well known in the reloading community for great values in dies and bullet molds. Lee offers bullet molds for casting lead bullets in various calibers and bullet weights. The molds are interchangeable, so with one set of handles, a bullet caster can switch from one caliber or b......[Read More]

Kiln forming is a term used to encompass several types of glass forming which takes place at temperatures between 1,100 and 1,700 degrees Fahrenheit. Also called "warm glass," it doesn't seem merely warm, but glassblowers ordinarily form glass at 2,000 degrees. A kiln is an oven-type.........[Read More]

Rosenthal porcelain, made in Germany since the 1880s, is highly collectible. It is essential for collectors of Rosenthal vases to be informed before buying pieces. While forgeries are not commonplace, knowing how to identify a true Rosenthal vase will allow you to avoid purchasing a forgery. Luckily......[Read More]

Sealing ceramic vessels isn't very hard as long as you have the right equipment. Unfortunately for most of us, we don't have kilns in our homes nor ovens that reach high enough temperatures to completely seal a ceramic glaze. That's where commercial sealants come into play. Using a sealant purchased......[Read More]

Definition of enterococcusEnterococcus faecalis is a type of lactic acid bacteria, which means that it produces lactic acid as a byproduct of metabolism. It is a gram positive bacteria, which means that it has a rigid outer cell wall (gram positive means that it is stained by gram.........[Read More]

A homemade catapult can vault you into the good graces of your friends and family. Next time someone yells "Food fight!" in your backyard you can show them that you're ready to rock with a food catapult. Sizes can vary, but in general you'll want something big enough to hurl a small pumpkin or a mes......[Read More]

Flying radio controlled, or RC, airplanes is a classic recreational hobby. Whether you are an aviation enthusiast or a casual weekend flier, RC planes can teach you a lot about flying, and the basic mechanics of aircraft. Making sure your RC plane is properly balanced is critical for safe flying. An......[Read More]

As of 2010, Makita has been making portable power tools for almost 100 years. Makita makes conventional corded tools such as circular saws, drills and routers, but also makes a line a of cordless battery operated tools. The Makita rechargeable battery fits a variety of tools, including drills, saws ......[Read More]

Gardens can vary from a small backyard plot of land to a manicured flower garden fit for a king.Fountain in garden. Garden design image by L. Shat from Fotolia.comThe ecosystem of a garden can be generally defined as the sum total of all the living units found in the and around the.........[Read More]

Lanyards fall into two general types. One is made of thin plastic craft string that's woven together. These lanyards are often attached to key rings, zipper pulls or pieces of jewelry as decoration. The second type of lanyard is a thick string or a thin rope used to secure electronic devices, such ......[Read More]

After a long day's work, it's great to lean back in your easy chair or sink into your couch and relax. Why stop there when you can put up your feet? A wooden footstool may be expensive to buy, but one is an easy to make and it will add to your room's decor.......[Read More]

The Domain Name System (DNS) is a distributed data query service, used mainly on the Internet for translating host names into Internet addresses and vice versa. A DNS zone is a portion of adjacent, or contiguous, space within the global DNS namespace presided over by a domain name server, which is r......[Read More]

Topographic maps illustrate three-dimensional shapes in two dimensions, using contoured lines and symbols. For beginners, learning to read and create a topographical map requires the repetition of certain exercises to train the eye and mind. These exercises are designed to help you understand how to......[Read More]

Breezes are the result of differences in air temperature. Warm air rises, leaving behind low pressure near the ground. Cold air creates high pressure and sinks to compensate; wind then blows from areas of high pressure to areas of low pressure to try to equalize pressures. The strength of breezes va......[Read More]