Valeriepieris Circle

Danny Quah's Valeriepieris circle on a globe model, rendered as an azimuthal equidistant projection centred on Mong Khet, Myanmar ^[1] (being nearly antipodal, South America is distorted into the large crescents)

The Valeriepieris circle^[1][2][3] is a South China Sea-centered circular region on the world map that is about 4,000 kilometers (2,500 mi) in radius and contains more than half the world’s population.^[1] It was named after the Reddit username of Ken Myers, a Texas ESL teacher who first drew attention to the phenomenon in 2013.^[4] The map became a meme and was featured in numerous forms of media.^[5][6][7]

In 2015, the circle was tested by Danny Quah, who verified the claim but moved the circle slightly to exclude most of Japan, and used a globe model rather than a map projection as well as more specific calculations. He calculated that, as of 2015, half of the world's population lived within a 3,300-kilometer (2,050 mi) radius of the city of Mong Khet in Myanmar.^[1]

The most common visual of the circle, originally used by Myers and also featured by io9^[8] and Tech in Asia,^[9] used the Winkel tripel projection.

References[edit]

1. ^ ^{a b c d} The world’s tightest cluster of people, Danny Quah, London School of Economics and Political Science
2. ^ More Than Half the World's Population Lives Inside This Circle, Condé Nast Traveler
3. ^ A Small Circle in Asia Contains More Than Half the World's Population, HowStuffWorks - Science
4. ^ After seeing a recent post about the population of Indonesia, this occurred to me, Reddit
5. ^ The Majority of the World’s Population Lives in This Circle, Visual Capitalist
6. ^ 40 Maps That Explain the World, The Washington Post
7. ^ Everybody Lives in Asia, Slate
8. ^ More than half of the world's population lives inside this circle, io9
9. ^ If More Than Half the Population of the World Lives in This Circle, Asia is the Future of Startups, Tech in Asia

from Hacker News https://ift.tt/GPUbCFK