- Pyroclast Falls (waterfallsnorthwest.com)
This waterfall occurs where a headwater stream of Wells Creek slides over an exposure of Ignimbrite (petrified Pyroclastic deposits) below Lasiocarpa Ridge, north of the Coleman Pinnacle on the north side of Mount Baker. The Ignimbrite formation can be seen from the Ptarmigan Ridge trail, but not the falls. Lidar data indicates a cumulative drop of about 235 feet.
- From ACS to Altair: The Rise of the Hobby Computer (technichistory.com)
A certain pattern of technological development recurred many times in the decades around the turn of the twentieth century: a scattered hobby community, tinkering with a new idea, develops it to the point where those hobbyists can sell it as a product. This sets off a frenzy of small entrepreneurial firms, competing to sell to other hobbyists and early adopters. Finally, a handful of firms grow to the point where they can drive down costs through economies of scale and put their smaller competitors out of business. Bicycles, automobiles, airplanes, and radio broadcasting all developed more or less in this way.