3 votes
Accepted

Is the surface of the Indian ocean really 106 meters below sea level?

Is the surface of the Indian ocean really 106 meters below sea level? Obviously not; it is at sea level. It is 100+ meters below the reference ellipsoid. Nor is the spot some hundreds of kilometers ...
David Hammen's user avatar
  • 23.6k
2 votes
Accepted

What is the pitch and roll in a tiltmeter sensor?

It's simply the measurement of incline in the x and y horizontal directions: Roll is the angle created by the slope $\frac z y$ Pitch is the angle created by the slope $\frac z x$ A tilt meter and ...
Stevan V. Saban's user avatar
2 votes

Is there a way to intuitively explain that the North of Sweden is closer to Australia than the South?

As some comments suggest, nothing substitutes for a globe and a tape measure. But there is a subtle hint of the outcome. Australia is southeast of Sweden according to latitudes and longitudes, but ...
Oscar Lanzi's user avatar
  • 3,831
1 vote

How to find out if three points on Earth are on the same great circle arc?

I would take the same approach as Jean-Marie Prival, but using a different toolset, because I'm not familiar with GIS in general and have never been in a room that has ever seen Mathematica. But I do ...
Rockdoctor's user avatar

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