The Great Circle Route
If you’ve flown to Europe or Asia, you know that the flight path, viewed on a “normal” map, looks far longer than it should. The plane flies what appears to be thousands unnecessary kilometers on a route that curves up near the North Pole, rather than flying in a straight line.
Appearances are deceiving, as you probably have realized. The earth is not flat, and that so-called normal map, usually a Mercator projection, greatly distorts distances at higher latitudes. Trace a route from Toronto to Tokyo on such a map, and it appears to pass about 700 km south of . . . [more]


