Archive for February, 2009
Tulsa passengers try out TSA’s full-body scanners
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The 35-year reign of airport metal detectors began its slow descent this week in Tulsa, where for the first time some passengers …
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Kojima scores GDCA top honor
Famed Metal Gear Solid creator will receive Lifetime Achievement Award at Game Developers Choice Awards on March 25. News widgets and RSS feeds on Feedzilla.com
Metal detectors
Metal detectors
Joseph Henry and Michael Faraday independently discovered the law of induction, although Faraday received the honor of the law’s name. The law is about electromagnetism and without this law metal detectors would not be possible. This induction is used to detect metal, whereby the changes in the magnetic field are measured when a metallic object influences it, magnetometer gives notice and that is in short what a metal detector does. Sometime by the conclusion of the nineteenth century, the need was huge to develop a machine or some kind of gadget which would assist in detecting metal. Miners would appreciate the possibility to recognize metal ore, which would give a miner with such an apparatus a huge advantage. Metal detectors which were developed at that time were weak and extremely limited, consumed much of the battery energy and were unreliable. It took until the 1930s to develop a proper, or for the lack of a better word “working”, metal detector. The first patent was given to a chap named Gerhard Fisher, but he got stuck with his invention until a Polish soldier, an officer who found himself in Scotland during the World War II, where the idea was developed into a really functioning and practical detector. The design was flawed as well, since that the apparatus was very weighty, loaded with vacuum tubes and battery packs. Nevertheless, this invention was vital for clearing the land mines the Germans deposited seemingly everywhere. These metal detectors worked very well. The war passed and suddenly there were plenty of metal detectors available and sold to interested individuals as surplus. Interestingly enough, many people started using the detectors to do a sort of treasure hunting, besides other more serious uses, like detecting buried pipes. This fun activity became a very popular hobby. The refining of the invention did not stop there, plenty of manufacturers started producing their own version of the metal detector. The invention of transistors made lighter versions possible, larger and more powerful metal detectors were developed in order to assist archaeologists and treasure hunters to detect metal buried underneath the surface. Nowadays, the modern detectors are utilizing the microchips to further advance the abilities and discriminating capabilities of metal detectors. Parameters can be stored and recalled, differences between certain metals can be sensed, the machines are much lighter and are able to protrude deeper into the ground. The battery power needed to operate these new and improved metal detectors is much less than it was needed during the WWII mine detection operation with heavy, vacuum tube laden machines.
Copper snaps losing streak
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Benchmark metal underpinned by report of coming help for U.S. housing market
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A Nuts-and-Bolts Success
T he smell inside Nichols Hardware is a bouquet of rubber and sawdust with metal undertones. It is a smell you might remember from childhood if you are old enough to remember dialing a rotary telephone.
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Gold Jumps Strongly On Safe-Haven Buying
NEW YORK (Dow Jones Commodities News) — Gold futures rallied Tuesday to their highest point since July as participants flocked to the metal - as well as the U.S. dollar and Treasurys - in search of safe-haven investments amid financial uncertainty…. RSS feeds and Feed widget on Feedzilla.com
Columbus could have been the capital? - Columbus Telegram
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COLUMBUS — The City of Columbus was positioned as the new capital of Nebraska, according to the Nebraska Survival Project, in the event Lincoln was destroyed in the Cold War. During the 1950s and 60s, and into the mid-80s, Nebraska was positioned …
PREVIEW-Zinc output cuts may help miners in TC talks - CNBC
By Carole Vaporean RANCHO MIRAGE, Calif., Feb 22 (Reuters) - Draconian production cuts brought on by sharp declines in zinc demand may drag out talks between miners and smelters negotiating refining fees beyond this weeks annual American Zinc …
The Bull’s Case for Investing in Gold
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Next stop $1,000? Gold has climbed more than $160, about twenty percent, in the last four weeks, and no matter where it goes from here over the short-term, some bulls think the long-term price is headed higher.
The price of the shiny yellow metal, now trading around $970 an ounce, is dependent, for the most part, on the value of the dollar. When the buck falls, gold rises, and vice versa. Some experts predict that even though the U.S. dollar has rallied since the financial crisis began, the greenback will resume its decline later this year or in 2010, for a couple of reasons.
First, the obvious: the supersize U.S. budget deficit, which has gone from a $128 billion surplus seven years ago to a to a more than $1 trillion deficit now. The government’s inability to pay off its debts each year has led to inflation, the devaluing of the dollar and a seven-year rally in the price of gold. But some analysts say the second reason, President Obama’s $787 billion stimulus plan and ot RSS and News widget on Feedzilla.com