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Directions for Saltwater Tanks
Keeping a saltwater aquarium involves more than simply filling a glass tank with saltwater and tossing in a few fish. Even with the most expensive equipment available, you will need to keep on top of changes within your water parameters. You will need to clean your equipment and add chemicals to you
Which Two Inner Planets Can Be Viewed From Earth As They Cross the Face of the Sun?
The orbits of the two inner planets, Mercury and Venus, sometimes make them cross directly across the sun. This is called a transit. When a planet directly transits across the sun, it can be visible from certain areas on Earth. The planet shows up as a black dot against the sun. This occurs very rar
How to Make a DC Photocell
A solar cell is a man-made device that turns sunlight into electricity. Commercial solar cells are made of specially treated silicon semiconductors, and bundled together into systems called solar panels. The treated silicon is expensive and difficult to work with, but you can use alternative materia
How do I Add Two Water Temperatures?
When faced with a requirement to find the mathematical mean of the temperatures in a particular body of water for the last week, or graphing local temperatures, adding two water temperatures is little more than simple arithmetic, as long as both temperatures are from the same temperature scale. Whet
The Objectives of Polarizing Microscopes
A polarizing microscope is a microscope that uses polarized light for looking at specimens. Polarized microscopes were originally used to view minerals; however, the microscopes are now used in biology and chemistry as well. There are two different types of polarizing microscopes depending on the ne
Over Which Type of Earth Surface Does a CT Air Mass Usually Form?
Critically important to shaping the weather, air masses are large bodies of air with relatively consistent levels of heat and moisture, covering thousands of square miles. It takes between ten days and two weeks for an air mass to take shape, so a relatively flat region of the Earth with stable weat
Sea Cucumber Characteristics
The slow-moving sea cucumber exists at the bottom of almost every ocean in the world. This creature has species that dwell in rocky regions, sandy plains and deep seas. As echinoderms, sea cucumbers are related to starfish and sea urchins; yet they have their own unique characteristics that set them
How to Dismantle & Clean a Glock 26
The Glock mode26 is a subcompact pistol with a 10 round magazine capacity, chambered in 9 mm. The Glock 26 is also known as the "Baby Glock" because of its small size and lightweight. The pistol will also accept the high capacity magazines used by the Glock 17 pistol. Glock pistols are simply desi
How to Get a Class II Federal Firearms License
The National Firearms Act of 1934 allowed the federal government to put a special purchase tax on certain types of firearms. These were short-barreled shotguns, fully-automatic firearms, and what was known as “any other weapon” which became a catch-all for unusual and strange guns. In 19
How to Make Glass Ball Ornaments With Paint & Crafts
A whole collection of colorful marbleized Christmas ornaments can be created at home with a few supplies. After letting the ornaments dry completely for a few days, they can be used as gifts or decorate your own Christmas tree. Swirl the ball only horizontally, only vertically or alternate for diffe
How to Collect US Mint Coins
To be classed as mint, a coin has to be in the exactly same condition as when first issued. Even small signs of handling are unacceptable. Collecting mint U.S. coins isn't cheap, and is best done by buying from a reputable dealer, from a store, online or from coin shows. If new rather than antique c
Styrofoam Bowl Crafts
Styrofoam bowls are the perfect material for a craft project. They are often already in your kitchen cupboards and are easy to work with. The bowl shape adds dimension to a craft that would otherwise be flat. Styrofoam craft projects can be made with a variety of other craft supplies such as paint,
What Are Four Nonliving Things in a Desert Ecosystem?
Ecosystems, short for ecological systems, result from the interaction of biotic, abiotic and cultural components. Biotic and cultural components are all living things, nonhuman and human and including microscopic life, present in the ecosystem. Abiotic components are those nonliving things, especial
How to Build a Superclass RC Crawler
Superclass radio-controlled (RC) crawlers are specially constructed vehicles built to take on just about any terrain you can throw at them. They utilize extra large tires and all-wheel drive systems, as well as fully articulating chassis components and suspensions, allowing them to traverse seemingl
How to Build a Wood Tabletop Podium
Tabletop podiums are used by presenters to prop up their speaking materials. Podiums range in material, design, and price. Since tabletop podiums are very simple, you may opt to build your own out of wood. By making it yourself, you can design the podium to match the rest of the furniture of the roo
Notable Characteristics of the Metal Palladium
Palladium is a rare metal, with commercially important deposits found only in Russia, South Africa, Canada and the United States. Despite the limited supply it is widely used in manufacturing and scientific research, and its unusual combination of characteristics makes it a surprisingly important pa
How to Make a Diffuser Base
Diffusers are bottles filled with essential or fragrance oil scented base. Reeds are placed in the base to soak up the fragrance and disperse it into the air. This method of scenting a room has gained popularity as an alternative to using candles, warm warmers, oil burners, or room spray. The diffus
Gems of Tennessee
The Freshwater Pearl is the state gem of TennesseePearl in shell image by Dr.Szirmai J??nos from Fotolia.comTennessee is home to a range of semi-precious stones, including the state gem the Freshwater Pearl. In particular, gems are likely to be found in the east of the state, where the...
Physico-Chemical Analysis of Water
Physicochemical analysis of water is the analysis of the physical and chemical properties of a sample of water, often to determine if the water is suitable for drinking or supporting aquatic life.