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The latest blog posts to take off on Hacker News. 190 posts.

Science & Space
2016
91

What is the roundest country?

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…

93

What makes music sound “good?”

When listening to music, however, we are not just listening to a series of disconnected instants. Instead, the way things sound depends on the notes we have heard. In other words, we integrate over time . One of the most important functions of a musical scale is to limit the overall pitch content of what we're hearing…

112

Jupiter Awaits Arrival of Juno

In preparation for the imminent arrival of NASA’s Juno spacecraft, astronomers have used ESO’s Very Large Telescope to obtain spectacular new infrared images of Jupiter. They are part of a campaign to create high-resolution maps of the giant planet. These observations will inform the work to be undertaken by Juno over…