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Open Airplanes
Airplanes

aeroplane, or aircraft, heavier-than-air vehicle, mechanically driven and fitted with fixed wings that support it in flight through the dynamic action

Airports

or airfield, place for landing and departure of aircraft, usually with facilities for housing and maintaining planes and for receiving and discharging

Open Airships
Airships

an aircraft that consists of a cigar-shaped gas bag, or envelope, filled with a lighter-than-air gas to provide lift, a propulsion system, a steering

Open Air traffic control
Air traffic control

No mode of public transportation has a greater emphasis on safety than the aviation industry. From manufacturing to maintenance requirements, every

Open Alberti, Leon Battista, 1404-1472
Alberti, Leon Battista, 1404-1472

A Humanist architect, artist, and writer on many subjects (1404-1472); no intellectual of the 15th century showed more enthusiasm for modernity. As a

Open Algardi, Alessandro, 1598-1654
Algardi, Alessandro, 1598-1654

Italian sculptor, the leading sculptor under Pope Innocent X. He moved to Rome in 1625. During the pontificate of Innocent X, when Bernini was out of

Open Alhambra (Granada, Spain)
Alhambra (Granada, Spain)

[Arab.,=the red], extensive group of buildings on a hill overlooking Granada, Spain. They were built chiefly between 1230 and 1354 and they formed a

Open Altarpieces
Altarpieces

A painting (more rarely a sculpture) placed on, behind, or above an altar in a Christian church. Altarpieces vary greatly in size, construction, and

Open Altars
Altars

table or platform for the performance of religious sacrifice. In its simplest form the altar is a small pile, with a square or circular surface, made

Open  	Altdorfer, Albrecht, approximately 1480-1538
Altdorfer, Albrecht, approximately 1480-1538

German painter, architect, and printmaker. He was active in Regensburg, Bavaria. He is best known for his vast panoramic battle scenes in which his