Gonzalo Ciruelos set out to discover which country was the roundest in shape.
We can define roundness in many ways. For example, as you may know, the circle is the shape that given a fixed perimeter maximizes the area. This definition has many problems. One of the problems is that countries generally have chaotic perimeters (also known as borders), so they tend to be much longer than they seem to be.
For that reason, we have to define roundness some other way. We represent countries as a plane region, i.e., a compact set C⊂R2C⊂R2. I will define its roundness as
That's about where I tune out! Turns out the answer is Sierra Leone. Click through to see lots of mathy thingies on the screen, the runners-up, the least round countries, and the source code.
IMGURian @KRANKARTA6 did an awesome topography visualization project in the “Ridgeline Style” that reminds us of the album cover for Joy Division’s classic LP ‘Unknown Pleasures.’
The premise of 1995’s Waterworld [Amazon] was flawed in that there isn’t enough water in the ice caps to raise sea levels 7500m, as is established in Waterworld canon. But I wanted to see what that would look like, so here is a map of planet earth with the sea level raised 7500m, based on […]
Not for much longer, sure, but here’s a map of American counties whose residents enjoy a life expectancy of more than eighty years. It was drafted by Spooderman89 on Reddit using mapchart.com. I believe the only states with not a single long-lived county are Mississippi and Delaware.
The world is holding its collective breath. As states begin cautiously reopening, no one is sure exactly what to expect. But one thing is clear: most Americans are worried about their bank accounts. By the end of March, the average American household was spending 40 percent less on their credit cards than they were one […]
Over 25 years, eBay has carved out its space as the commerce hub of choice online. With 182 million users worldwide, that works out to about 35 percent of all US mobile users who shop those eBay storefronts. But did you know there are usually around 1.3 billion — with a B — active for-sale […]
Software apps are a dime a dozen. Well, if you’re going by their actual monetary cost, maybe not really. But considering how useless some poorly conceived, poorly executed apps are at doing the job you actually downloaded them to accomplish, it isn’t a stretch to think that many apps aren’t even worth a free download. […]