Eight double strokes on ship's bell; customarily struck at midnight when new year commences.
The process of designing a solar system to meet a specified load given the solar resource and the nominal or rated energy output of the solar energy collection or conversion device.
The amount of sky covered or concealed by clouds or obscuring phenomena. It is reported in tenths, so that 0.0 indicates a clear sky and 1.0 (or 10/10) indicates a completely covered sky. The following classifications are used in aviation weather observat ...
A large plastic constant-level balloon for duration flying at very high altitudes.
A window located on the roof of a structure to provide interior building spaces with natural daylight, warmth, and ventilation.
On a square-rigged ship, a small triangular sail set above the skysail in fair weather. A square version is called a Moonraker.