Magnetic North refers to the location of the Earth's Magnetic North Pole. Its position is constantly changing in various cycles over centuries, years, and days. These rates of change vary and are not well understood. However, we are able to monitor these changes. True North refers to the earth's celestial pole, i.e., at 90° north latitude or the location where the lines of longitude converge. This position is always the same and does not vary.

The strength and direction of the Earth's magnetic field are constantly changing. Scientists monitor these changes and track the location of the magnetic north pole, which is not fixed at a specific geographic location. The magnetic north pole moves by a significant but variable amount from day to day and year to year (on the order of 40 kilometers or 25 miles). See similar questions...

Yes. All our Magnetic Pulsers have either the North pole clearly marked, or on previous models North is always on the flat face of the coil - the side normally used against the body. North is to be described as South-Seeking. See similar questions...

For information about the difference, and how to use a magnetic compass to find true North, search the web for magnetic declination. See similar questions...

For North Dakota individual income tax purposes, state law defines a resident as any natural person who either (1) is domiciled in North Dakota, or (2) physically resides more than seven months of the tax year in a permanent place of abode maintained in North Dakota. Domicile is your residence by law and is commonly referred to as your legal residence. It generally means the place that is your permanent home to which you always intend to return whenever absent from it. See similar questions...

Number of trackpoints that report a discrepancy between the distance reported and the location reported See similar questions...

Answer: The Dell Mobile Broadband Card Utility determines whether your system supports GPS during installation. See similar questions...

Why don’t genealogists use the simple terms “primary source” and “secondary source?” See similar questions...

All winds reported here are relative to True north unless specifically labeled otherwise. The sources are METARs, TAFs, and FB reports all of which are based on True north. Magnetic declination is very large in some areas, please keep this in mind. See similar questions...

The UTM grid lines are aligned with true north at the center of each utm zone, which would have an easting value of 500km. As you move away from the central meridian, grid north, will vary a bit from true north. Most USGS topo maps will show the value for grid north (labeled GN) on their declination diagram. Usually it's less than a degree off of true north, and many folks ignore the difference and use the UTM grid lines as true north reference for plotting compass bearings. See similar questions...

The North Pole is an imaginary point at the earth's northern axis where lines of longitude converge. The Magnetic North Pole is a location to where compasses point from virtually every place on the planet, which acts somewhat like a giant magnet. The closest town to the Magnetic North Pole is Resolute, a small town in Canada. See similar questions...

Knowing your time of ovulation is crucial to successful conception. Your fertile period starts about 4-5 days before ovulation, and ends about 24-48 hours after it. For more information, see Ovulation and Pregnancy. See similar questions...

MobileAngel GPS utilizes best of breed technologies, coupled with the patented SMSExpress nationwide wireless network and GPS satellites to operate in conjunction with your vehicle's electrical system. The MobileAngel GPS unit is powered by your vehicle's battery. MobileAngel GPS is always in the receiving mode, ready to respond to a command from you. See similar questions...

This is the question we hear most. The answer is, no one really knows for sure. Some doctors believe that the magnetic field affects the iron component of blood, hemoglobin, thereby increasing circulation to the area where magnets are applied. Another theory is that the magnetic field energizes and oxygenates the white corpuscles in the blood stream, and these white corpuscles are natures healing agents. The charged ions increase the blood flow, which provides increased oxygenation to the blood. See similar questions...

When magnetic lines of flux encounter high permeability material, the magnetic forces are both absorbed by the material and redirected away from their target. The most effective shields are constructed as enclosures such as boxes or cylinders with cap ends. The field follows the line of the enclosure so an enclosed shape keeps stray fields from finding gaps that could cause unintended interference. See similar questions...

Answer: Possibly. Employees are entitled to overtime pay unless their actual work duties meet one or more of the exemptions from overtime provided in labor law. Simply being paid on a salary basis is not enough to make an employee exempt from overtime pay. A complete list of overtime exemptions is provided on the reverse side of the ND Minimum Wage & Work Conditions Summary Poster. Please note: Adobe Reader is needed to view or print the brochure. See similar questions...

No high resolution color orthoimagery available yet for your town? 1996 grayscale base layer orthoimagery is available for most towns. See similar questions...