Browse Reference Articles
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Geothermal power
Geothermal power is the use of geothermal heat for electricity generation. It is often referred to as a form of renewable energy, but because the heat at any location can eventually be depleted it ... > more -
Helicopter
A helicopter is an aircraft which is lifted and propelled by one or more horizontal rotors (propellers). Helicopters are classified as rotary-wing aircraft to distinguish them from conventional ... > more -
Power station
A power station or power plant is a facility for the generation of electric power. At the centre of nearly all power stations is a generator, a rotating machine that converts mechanical energy into ... > more -
Sonic boom
A sonic boom is the audible component of a shock wave in air. The term is commonly used to refer to the air shocks caused by the supersonic flight of military aircraft or passenger transports such as ... > more -
Boeing 747
The Boeing 747, commonly called the Jumbo Jet, is one of the most recognizable modern airliners and is the largest airliner currently in airline ... > more -
Parachuting
Parachuting, or skydiving, is an activity involving the breaking of a free-fall from a height using a parachute. Today it is performed as a recreational activity and a competitive sport, as well as ... > more -
Aerodynamics
Aerodynamics (shaping of objects that affect the flow of air, liquid or gas) is a branch of fluid dynamics concerned with the study of forces and gas flows. The solution of an aerodynamic problem ... > more
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