An air conditioner cools the air inside by drawing heat away and releasing it outside.
A liquid-crystal display utilises the light modulating properties of liquid crystals.
A differential allows the driven wheels of a car to rotate at different speeds when the car is turning.
Tower cranes are machines used for lifting loads weighing up to several tonnes.
This animation demonstrates the design and operation of a traditional cinema projector.
This animation demonstrates how an escalator works.
This animation explains how a plasma display television works.
Observatories are often built at high elevations to minimise the effects of atmospheric turbulence
The capacity of data storage devices have increased at an incredible rate during the past decades.
This animation demonstrates how solar energy can be utilised.
A two-stroke engine is a type of internal combustion engine with a cycle of only two (power) strokes.
These tools, revolutionary even in their simplicity, are still in use today.
A wide variety of optical instruments are in use today, ranging from microscopes to telescopes.
This animation demonstrates the structure and most important peripherals of desktop computers.
The first calendars and time-measuring instruments were already used by ancient Eastern civilisations.
Types of bridges include beam-, arch-, suspension-, cantilever and truss bridges.
Two meshing gears transmit torque during their rotational motion.
The invention of the ballpoint pen made writing a lot easier.
Water turbines convert the kinetic energy of water into electric current.
This animation shows optical and radiotelescopes used in astronomical observation