Hobbies & Science : Society & Culture & Entertainment
A laser pointer is a single colored, unified wavelength beam of light -- where individual beams come together as one -- that focuses on one small spot. The term "laser" is actually an acronym meaning "light amplification by stimulated emission of radiation." Laser pens come in red, orange, green and
Batteries have been around since the early 1800s and are now used to power many different devices, from television controllers to cars. They are able to convert chemical energy into potential electrical energy, and they use that electricity to power the device they are hooked up to. They are so impo
Jet fuel tanker operators transport fuel from distribution plants to airport and other aviation facilities for use in private, commercial and military aviation. The role requires a Class A commercial driver's license and extensive experience in tractor-trailer driving. The Bureau of Labor Statistics
An awl is a long, thin hand tool with a pointed end. Bone awls were first created and used in the prehistoric period. They are used for poking holes through leather and tough materials. Bone awls were also believed to be used for basket weaving and sewing. Today, awls are usually made of metal, and
Cuckoo clocks are carved wooden clocks that feature a mechanical cuckoo. A set of weights supplies power to the clock's inner workings. As the weights descend, they turn the gears that move the clock's hands. The weights are attached to the clock by means of long chains that fit over wheels located
The harpy eagle is an amazing bird that's sadly listed on the endangered species list. These eagles can weigh well over 15 pounds and have talons capable of hundreds of pounds of clamping force. Harpy eagles are rarely sighted in their native region of Central America because their numbers have decl
Soils take their names from the physical and chemical characteristics in their layers. The names also come from the areas where they are found. Some of the characteristics that affect soil names include: texture, color, and the composition that the soil has.SiltSilt has a lower...
PVA or polyvinyl acetate glue is commonly used for craft and school projects. PVA glues are made by several companies and, although their chemical composition may be slightly different, they are all used in the same way. In the event of a PVA spill, you can remove the glue by using water. PVA glues
HyperCam is a screen recording utility for the Windows operating system. This application captures the elements on your screen making it useful for creating software tutorials and presentations. It can also be used to record full-screen applications such as video games. When finished recording, you
An outside deck or porch can be a great addition to your home and provide hours of enjoyment to your family. If you are planning to add a deck or porch, you may wish to add a railing for aesthetic purposes or be required to add a railing based on your local building codes. Your railing can be as sim
Ceramic kilns use cones to measure the interior temperature of the kiln during a firing. It is possible to measure the temperature without the use of cones. Pyrometers are the most accurate way to measure the temperature. Temperature can also be estimated by the interior color of the kiln using a co
Propane use in household air conditioners is prohibited by the EPA.window air conditioner image by Aaron Kohr from Fotolia.comThe emergence of propane as a refrigerant is primarily due to the phasing out of chlorofluorocarbons (CFC's) that began in 1995 and the push to regulate...
Before microprocessors and computer chips, machines were based on the universal forces of physics; inclined planes, levers, wheels and screws were used to move the world of our ancestors.By making use of basic craft materials, you too, can perform a simple task, like popping a balloon, u
Table saws are a staple for most woodworkers. Basically a big table with a sharp saw blade sticking out of the top, table saws can be very dangerous. There are certain safety measures that should always be taken when operating this dangerous cutting tool.
"Slumping" is a term used to describe the process of heating a bottle so it melts down and collapses into a flat surface. Slumped bottles are used for cheese plates, cutting boards or spoon rests. Often sold at craft fairs, slumping wine bottles could be a nice hobby and you will always have a prese
The Texas horned lizard eats mostly ants.texas horned toad 2 image by sally from Fotolia.comThe southeastern parts of Texas provide habitat for several types of lizards, with some of these reptiles existing in grasslands and others in woodlands. Some of the lizards of this part of Texas...
If you have access to a large amount of e-waste, you may literally be sitting on a gold mine. There is gold that can be recovered from discarded computer circuit boards--but in such small amounts that the time-consuming and dangerous process required to remove gold from computer circuits is only wor
Natural oak wood is generally light amber with a pink hue. Over time, unfinished wood items exposed to sunlight can fade. You can restore the wood to its natural finish with a few simple home tools. The restoration might cost pennies on the dollar compared to replacing the item. Treating unfinished
Ponchos, those Spanish draped tops that are sometimes not much more than a sheet of fabric with a neck opening and arm holes, remain popular in Latin, Mexican and Spanish cultures. Ponchos have also been adapted for modern use and ponchos in various sizes, colors and fabrics can be found for men, wo
Barometers have been around since 1643 and are still used today to help forecast the weather. A barometer measures fluctuations in the air pressure, which can signal coming changes in the weather. For example, a change in pressure from low to high suggests good weather is on the way. Early barometer