Bar code scanners use lasers to interpret arrangements of parallel lines with varying widths.bar code image by Renato Francia from Fotolia.comWhile some perhaps think of lasers as tools of the future, many modern industries and scientists already use them in a variety of technological...

Clean and empty paint cans can provide the perfect structure to use to make Christmas crafts. Different sizes of paint cans can be used together or separately to make crafts, and they are an easy shape that can be made into Christmas crafts that stack, hang or stand among all the trimmings of the ho

An old-fashioned lathe is not electric powered.Woodman at work image by CJD from Fotolia.comLathes spin wood at high speeds are used in conjunction with carving tools to shave woods into different shapes. They are commonly used to build banisters, pens and even baseball bats. They date...

"XiLero" is an online role-playing game. As such, it involves the usual variety of mythical and magical beasts, player classes, magic and combat. Players choose a character class and embark on quests to save an imaginary fantasy world from evil. These quests award players with better weapons and mor

Hydroponics is an area of study that allows people to grow plants without any soil, using only nutrient solutions. The plants are grown in more sterile environments, ensuring survival of larger crop ratios. Mathematics is used in every part of hydroponics, from the way the plants grow, to the aqueou

Wood pallets are found around many industrial sites. Pallets are platforms made of two layers of wood slats used to help transfer heavy amounts of products and materials: a forklift inserts its two teeth through the pallet and lifts it and whatever else is on top of it up to bring it elsewhere. Pall

In a diploid organism like a human, each individual receives one copy of a given gene from their parents. Often there are multiple variants of a gene present in a population; each different variant or version is called an allele. In a Punnett square, each of the possible combinations of alleles you

"Alkaline" is a term used to describe substances that rate above 7 on the pH scale. As such, they are classified as bases, as opposed to acids. Alkaline substances increase the concentration in water of the OH- ion and lower the concentration of the H+ ion. Acids do the opposite.

Simple cube paper boxes are a wonderful choice to hold favors for a wedding, bridal shower or ladies luncheon. They are easy enough to be made in bulk and sophisticated enough to enhance any occasion's decorations. Prepare the basic template for this favor and partner it with patterned card stock.

Everybody needs one at some point; a simple wood box. It can be for toys or storage, a bin for produce, dry goods or firewood. It can be for tools, the back of a pickup or a strong box to ship china. Whatever the use, the box needs to be strong and durable. It's not for looks but can hold up to anyt

Panning for gold can be a fun and rewarding experience and, according to Harold Kirkemo, "there are few thrills comparable to finding gold." Although many of the most gold-rich areas in the U.S. are in the Western states, limited amounts of the precious metal have been found in the East, including i

Create a lighted firefly decoration in a jar to use outdoors for an after-dark party, barbeque or wedding reception. Recycle old jars to make the decoration, and let the real fireflies fly free. These creations in a jar have the appearance of little lighted fireflies, without having to actually capt

High school provides one of the first opportunities for students to dive into advanced scientific topics, such as physics, chemistry and biology. There are several directions and subdivisions of biology, each of which might be covered during high school biology. Although the topics are broad, there

Precision is perhaps the most important factor in determining the success of a science experiment. A volumetric flask is laboratory glassware with a bulb and a long neck that is used to prepare chemical solutions to known volumes. Calibration of volumetric flasks is one of the key preliminary tasks

Distillation is a separation technique that selectively separates a pure liquid substance from other compounds and impurities based on their boiling point. One of the most widely known example of this practice is used in steam distillation of water to provide clean pure water and distillation of eth

Welcome to their world...children image by Renata Osinska from Fotolia.comChildren quickly latch onto toys and games that seem to be passing fads, but sometimes these trends prove durable. The Pokemon franchise is a good example of this; founded in 1996, the computer game franchise has...

The National Weather Service run by the National Oceanic and Atmospheric administration (NOAA) is the main source of weather data and forecasts in the United States. The National Weather Service is also the official government body that issues warnings and alerts during life-threatening weather even

You can use any type of wallpaper to make a jigsaw puzzle out of wallpaper and cardboard. Choose a design that will work as a puzzle. Some designs, such as stripes or polka dots, are more difficult to adapt to jigsaw puzzles. Make the pieces any size you want. Include as many pieces as you want. The

We often take cans and storage containers for granted. Without them, how would we transport and store food, beverages, cleaners, chemicals or anything dangerous, liquid or perishable? Manufacturers choose the materials used to make containers based on expense, convenience, safety and other factors.