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Heat pump
A heat pump is a machine
which moves heat from a low
temperature reservoir to a
higher temperature reservoir
under supply of work. ... > full story
Metallurgy
Metallurgy is a domain of
materials science and of
materials engineering that
studies the physical and
chemical behavior of
metallic elements and their
mixtures, which are called
alloys. ... > full story
Bicycle
A bicycle, pushbike, or
bike, is a pedal-driven land
vehicle with two wheels
attached to a frame, one
behind the other. First
introduced in 19th-century
Europe, bicycles evolved
quickly into their familiar,
... > full story
Machine
A machine is any mechanical
or organic device that
transmits or modifies energy
to perform or assist in the
performance of tasks. It
normally requires some
energy source and
accomplishes some sort of
... > full story
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Mechanical engineering
Mechanical engineering is a very broad field of engineering that involves the application of physical principles for analysis, design, manufacturing, and maintenance of mechanical ... > 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 -
Foucault pendulum
A Foucault pendulum, or Foucault's pendulum, named after the French physicist Leon Foucault, was conceived as an experiment to demonstrate the rotation of the Earth; its action is a result of the ... > more -
Projectile
A projectile is any object sent through space by the application of a force. In a general sense, even a football or baseball may be considered a projectile, but in practice most projectiles are ... > more -
Construction
In project architecture and civil engineering, construction is the building or assembly of any infrastructure on a site or sites. Although this may be thought of as a single activity, in fact ... > more -
Turbulence
In fluid dynamics, turbulence or turbulent flow is a flow regime characterized by chaotic, stochastic property changes. This includes low momentum diffusion, high momentum convection, and rapid ... > more -
Superheating
In physics, superheating (sometimes referred to as boiling retardation, boiling delay, or defervescence) is the phenomenon in which a liquid is heated to a temperature higher than its standard ... > more
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