Open Air

Open Air

Open Air was BBC1's flagship programme for their new daytime service which began on 27 October 1986.

Outdoor cinema

Outdoor cinema, also known as open-air cinema, consists of digital or analog movie projectors, a large screen, often scaffolded construction or inflatable movie screen, and a sound system. It is a format of cinema viewing that takes place outdoors, instead of in enclosed theaters.

Open Air (climb)

Open Air is a 55-metre (180 ft) sport climbing route on a limestone cliff face at the Schleierfall climbing area in the Wilder Kaiser mountains, in Tyrol, Austria. In 1996, German climber Alexander Huber made the first free ascent and after completing his redpoint, he proposed a technical grade of 9a (5.14d), which ranked it alongside the highest grades of any climbing routes at that time.

Atmosphere of Earth

The atmosphere of Earth consists of a layer of mixed gas that is retained by gravity, surrounding the Earth's surface. It contains variable quantities of suspended aerosols and particulates that create weather features such as clouds and hazes. The atmosphere serves as a protective buffer between the Earth's surface and outer space. It shields the surface from most meteoroids and ultraviolet solar radiation, reduces diurnal temperature variation – the temperature extremes between day and night, and keeps it warm through heat retention via the greenhouse effect. The atmosphere redistributes heat and moisture among different regions via air currents, and provides the chemical and climate conditions that allow life to exist and evolve on Earth.

open air

Noun

1. the outside
2. the outdoors; a space not surrounded by walls.