XMM-Newton and Chandra help revise distance to Milky Way's outer spiral arms

The European Space Agency's XMM-Newton and NASA's Chandra X-ray space telescopes have spotted the aftermath of three bright explosions echoing through the outer spiral arms of our galaxy, the Milky ...
BBC

Distance-time and displacement-time graphs

\(gradient = \frac{change~in~y}{change~in~x} = \frac{change~in~distance}{change~in~time} = \frac{change~in~metres}{change~in~seconds} = m/s.\) The gradient of a ...
National Academies of Sciences%2c Engineering%2c and Medicine

A Mechanistic–Empirical Model for Top-Down Cracking of Asphalt Pavements Layers

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...
BBC

Direction, scale, distance and height

The four main points of the compass are north, east, south and west. Half way between each of these there are four other points: north-east, south-east, south-west and north-west. This makes an ...
www.cs.cmu.edu

The Heat Method for Distance Computation

We introduce the heat method for solving the single- or multiple-source shortest path problem on both flat and curved domains. A key insight is that distance computation can be split into two stages: ...