For locals, Nook represents that perfect “regular” spot – reliable enough for daily visits yet special enough to bring out-of-town guests when you want to impress them with a slice of your California ...

The northern lights, also known as the aurora borealis, are one of nature's most spectacular displays — a shimmering, colorful dance of light across the night sky. Caused by charged particles ...

In this paper, an experiment with 12 -element linear array and software-defined-radio (SDR) is presented. ADS-B signals were recorded during the experiment, and then array calibration using ADS-B ...