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Longest Straight Line Paths on Water or Land on the Earth (2018)

arxiv.org

61–66 of 66 posts

Re: Longest Straight Line Paths on Water or Land on the Earth (2018)

#61
post #43

I know the globe is unintuitive (it still blows my mind that Muslims in New York City face roughly northeast to point toward Mecca) but it still seems bizarre that the water route can start near the arctic circle, cross the Pacific ocean, nearly touch Antarctica, cross the Atlantic ocean, and cross the Indian ocean to end well north of the equator and still travel only 80% of the way around the globe. This view of th…

> it still blows my mind that Muslims in New York City face roughly northeast to point toward Mecca It never occurred to me they would face the shortest distance to Mecca. I've looked it up and apparently it's a point of contention in North America, although the great circle seems to be standard. Interestingly there are landmasses around the antipode of Mecca, which means your direction would vary wildly as you trave…

I like the idea of there being a place on land where a Muslim can look anywhere, and be looking toward Mecca.

But apparently, it's the middle of the ocean, although there does appear to be an atoll very close by: https://en.wikipedia.org/wiki/Tematagi

Re: Longest Straight Line Paths on Water or Land on the Earth (2018)

#63
post #2

The paper is basically like this (spoiler alert): “Some random user on Reddit posted a picture claiming that this is the longest straight line path on water possible on the Earth. We implemented a smart algorithm to solve this problem, found the elevation data, ran our algorithm... yes, that random user was right. Also, here's the longest path on land.” Thanks, I really enjoyed reading it, even though I hoped that th…

The Portugal to (approximately) Macao one is quite interesting, thanks for the links!

Re: Longest Straight Line Paths on Water or Land on the Earth (2018)

#66
post #22

There's a longer land path that starts in or near Senegal and ends in China. But they miss it because it goes near the Dead Sea, and they treat anything below sea level as water.

Indeed, this route would be about 13,250 km, or about 2,000 km longer than the one TLA suggests. http://www.gcmap.com/mapui?P=10%B0+24%27+41.4%22+N,+14%B0+31... Or, using nearby airports: https://www.greatcirclemap.com/?routes=gucy-vmmc

Almost 7200 nautical miles from Macau, China to Conakry, Senegal, west africa, through Suez. 8253 miles.
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