Sentences with phrase «magnetic north does»

But magnetic north doesn't line up perfectly with true north, the point where the Earth's axis hits the surface (and above which the North Star sits).

Not exact matches

For example, scientists don't understand why the magnetic field is as strong as it is, or why the field reverses polarity — the North Pole becomes the South Pole and vice versa — every several hundreds of thousands of years, briefly vanishing in between.

During reversals, Earth's field weakens (although it does not disappear entirely), and the direction of magnetic north may vary wildly.

And NSF didn't get its wish to start construction of a polar cap observatory near the magnetic North Pole.

By Anne Harding TUESDAY, Dec. 2, 2008 (Health.com)-- Radiologists who read imaging exams — such as magnetic resonance imaging (MRI) and CT scans — may do a better job if they see a picture of the face that goes with the diagnostic test, according to research presented this week at the Radiology Society of North America's annual meeting in Chicago.

That said, the updated romance does have more than its share of sizzle — and how could it not when it pairs two of the most attractive and magnetic stars (and both north of 40, no less) in film today?

Not only does the Earths magnetic field wander around on time scales of a century or so, but every 100,000 years or so it completely changes direction, with the north (magnetic) pole becoming the south (magnetic) pole.

Not only did it land heads, but it also points exactly 32 degrees off magnetic north!

Just look at the variation change thoughout the years from Magnetic to True North and you will see what our earth is doing under us.

Why «true north» — doesn't everyone know it's the magnetic north that's in Canada?