Preventing GPS Disasters
Article by Marlene Affeld
If your GPS device told you do drive off a cliff or ford a raging river, would you do it? You may respond, of course not, thats stupid. Unfortunately, many people substitute technology for common sense, often with tragic results.
Satellite navigation systems are changing the way in which we navigate from place to place by land, sea or air; in remote wilderness areas or through congested urban streets. The GPS system has been called the greatest advance in outdoor navigation since the invention of the compass and has become a widely used aid to navigation worldwide, a useful tool for map-making, land surveying and recreational navigation. An estimated 50 million navigation devices, including in-car systems, handheld or portable units and smart phones, will be in use in the United States this year.
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Portable GPS Glossary: 15+ Terms You Need to Know
Article by Rose Li
The satellite tracking technology intended for military applications during the 1980s is now made available to you through portable GPS navigational devices. These products have become extremely popular that entrepreneurs like you can jump into the bandwagon and cash in. All you need to do for starters is to familiarize yourself with some of the most important portable GPS terms that you need to know if you want to go into business in this market segment. But first, take a look at how GPS systems work and gain some basic understanding that would prove useful for you in the long run.How Does GPS System Work?The main purpose of your portable GPS unit is to tell you precisely where on earth you are at that particular moment. This device can do this by triangulating your position based on information it receives from GPS satellites orbiting the earth. With Click to continue
GPS
GPS
This reference and handbook describes theory, algorithms and applications of the Global Positioning System (GPS/Galileo). It is primarily based on source-code descriptions of the KSGsoft program developed by the author at the GFZ in Potsdam. The theory and algorithms are extended and verified for a new development of a multiple functional GPS/Galileo software. Besides the concepts such as the unified GPS data processing method Click to continue
Shortwave Radio
Remember the good old days when everyone had short wave radios? Short wave radios were amazing devices that revolutionized mass communication. Whole entertainment programs were listened to instead of the plasma screen TV’s that we have today. It was also used in many other ways such as with politics. New presidents such as Ronald Regan began to bring their message to the public through this new system.
Remember gathering around the radio with your family to listen to the programs about cowboys and Indians? Or maybe when they had programs about how the Earth was being invaded by aliens? This is just some of many programs that played that entertained the whole family.
For those who were politically influenced, people loved listening to the president on the radio, as well as other prominent politicians. It was the first time that the general public could hear all about Click to continue
Orbital Welding, Orbital Welding Systems
Article by Nitin Godse
Orbital welding is Automatic Tungsten inert gas welding. It eliminates chances of manual errors in welding. It produces identical welds for hundred of times hence accuracy in welding.
The Physics of the GTAW Process:
The orbital welding process uses the Gas Tungsten Arc Welding process (GTAW) as the source of the electric arc that melts the base material and forms the fusion weld. The metal to be welded is melted by the intense heat of the arc and fuses together.
Reasons for Using Orbital Welding Equipment
There are many reasons for using orbital welding equipment. The ability to make high quality, consistent welds repeatedly at a speed close to the maximum weld speed offer many benefits to the user:
Productivity. An orbital welding Click to continue
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