The 1983 US Postal Service first-day cover for the 20-cent Edwin Howard Armstrong commemorative stamp from the American Inventors series, featuring a Colorado Silk cachet illustrating Armstrong at his ...

Abstract: This paper proposes and demonstrates an arbitrarily tunable multi-frequency pulse modulation scheme based on an active fiber loop, which effectively suppresses the interference fading effect ...

A pet cow named Veronika can scratch her own back with a broom — the first scientifically documented case of tool use in cows, researchers say. By Emily Anthes For a cow, Veronika has had what might ...

Bacteria employ complex signaling networks for adaptive gene control in changing environments. Bacterial second messenger molecules such as cyclic AMP (cAMP) relay external environmental signals into ...

For some, Halloween is starting to rival Christmas for setting up elaborate holiday decorations. Homeowners now spend many hours─and sometimes dollars─creating ghoulish displays of lit pumpkins, ...

SAN FRANCISCO, Oct 7 (Reuters) - Qualcomm (QCOM.O), opens new tab on Tuesday said it has acquired Arduino, an Italian not-for-profit firm that makes hardware and software for developing prototypes of ...

Spatial frequency is a fundamental characteristic of visual signals that modulates the audiovisual integration behavior, but the neural mechanisms underlying spatial frequency are not well established ...

Electrical power systems engineers need practical methods for predicting solar output power under varying environmental conditions of a single panel. By integrating an Arduino-based real-time data ...