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Sold by: retrolink Have one to sell? Sell on Amazon. Image Unavailable Image not available for Color:. See all 6 formats and editions Hide other formats and editions Price. Audio CD, March 31, "Please retry". Frequently bought together. Add all three to Cart Add all three to List. These items are shipped from and sold by different sellers. Show details. Customers who viewed this item also viewed. Page 1 of 1 Start over Page 1 of 1. Usually ships within 10 days. No other metal is as ductile or as malleable as gold.
A single ounce of the metal can be drawn into a wire five miles long. Gold can be hammered into sheets so thin that light can pass through. High purity gold reflects infrared heat energy almost completely, making it ideal for heat and radiation reflection. Gold-coated visors protected astronauts' eyes from searing sunlight on the Apollo 11 moon landing. Gold is also an excellent conductor of thermal energy. It is used in many electronic processes to draw heat away from delicate instruments.
Annealing Annealing gold can make it both harder, and stronger. However, there is a point at which it can be overworked, which will eventually cause it to easily fracture. Metals have a crystalline structure. When a metal is strained and distorted mechanically, the crystals become stressed and the metal hardens. To relieve this stress, and "relax" the structure, they must be heated to a temperature somewhat below the melting point.
This is called annealing. Gold alloys must be cooled slowly after annealing. The wear resistance is related to its surface hardness and age as well as to the actual metal. Annealing softens them, and working bending, twisting tends to work harden metals this explains why forged steel is much stronger than cast steel for the same alloy content. Gold Colors Gold is bright yellow and has a high luster.
Apart from copper and caesium it is the only non white colored metal. The arrangement of outer electrons around the gold nucleus is the reason for the yellow color; to be precise, the transition of electrons from the d band to unoccupied positions in the conduction band.
Finely divided gold, like other metallic powders, is black; colloidally suspended gold ranges in color from ruby red to purple.
Gold can mixed with other metals to give it different colors. White gold is very popular right now. It can be in karat or karat gold but not in karat, as it is yellow gold. There are two basic types of white gold alloys: white gold mixed with nickel and white gold mixed with palladium.
Nickel can be mixed with gold to create a white or gray color, but some people have an allergy to nickel. Palladium is another metal used to create white gold. Palladium is better but it costs more. To enhance the whiteness, almost all white gold is plated with rhodium, a shiny, white metal which is extremely hard.
Depending on the amount of wear to a piece of jewelry, over time this rhodium plating may wear off, revealing the original metal color. Copper creates pink and rose tones in gold. The more the copper, the deeper will be the effect. Greenish shades are created by adding silver to gold w hile excluding copper from the mix. Cadmium can be incorporated to vary the tint of green. Rose gold and Green gold can be karat or karat but the color is stronger in the karat alloys. Purple gold. It is referred as amethyst or violet gold.
Purple gold is obtained by mixing gold and aluminium in a certain fixed ratio. Blue gold is made as an inter-metallic compound between gold and indium. The gold gets a bluish hue color with this process. Black gold is created using a few techniques. Electro-deposition using black rhodium or ruthenium is the first technique. Controlled oxidation of Carat gold containing cobalt or chromium can also be made to create black gold.
Amorphous carbon is also used some times, with the Plasma Assisted Chemical Vapor Deposition process. Chocolate gold is derived from a relatively new method created in Italy. Referred to as physical vaporization and deposition, it entails placing gold usually rose-colored in a suction compartment and blasting it with electrodes. This approach causes the gold's surface to oxidize in a controlled environment, resulting in the metal's color changing at a molecular level and producing a rich chocolate color.
Gold conducts electricity, does not tarnish, is very easy to work, can be drawn into wire, can be hammered into thin sheets, alloys with many other metals, can be melted and cast into highly detailed shapes, has a wonderful color and a brilliant luster. Romantic Evening Sex All Themes. Features Interviews Lists. Streams Videos All Posts. Track Listing. Six Gun. Decadent Dub Team. Let the Rhythm Run. Big Daddy Kane. At least, […]. Save my name, email, and website in this browser for the next time I comment.
Member Login. By Noa Kageyama, Ph. Red vs. Red effects on judges Interestingly, it seems that observers are also affected by the color of the uniforms. Why not? Dress on purpose So there may be days when you need to get more excited, and wear outfits that get you fired up. Share About Noa Kageyama, Ph. Based in NYC, he is married to a terrific pianist, has two hilarious kids, and is a wee bit obsessed with technology and all things Apple.
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