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Technology

Technology

Aircraft

All flying machines are types of aircraft. Balloons and airships stay airborne because they are filled with lighter-than-air gas. Aeroplanes (known as airplanes in the US) and...

Construction

People have constructed buildings from ancient times as homes to provide shelter, monuments or places of worship. Earth, wood and stone have always been used as building...

Electrical power

Electricity is a type of energy that gives us heat and light and drives machines. To be useful, electricity must be made to flow in a current. In 1831 the British scientist...

Electronics

Electrons are tiny particles that are parts of atoms. An electric current is a flow of electrons. Electronics is the study of how electrons behave and how they can be controlled...

Media and communications

Telecommunications is the sending and receiving of information using electricity, radio waves or light. The information can be data, sound or TV pictures. Data can represent text...

Microscopes

A microscope is an instrument that magnifies very small objects, allowing the viewer to see detail in the object that is invisible to the naked eye. Microscopes are used...

Photography

A camera is a device that records an image of a scene, either electronically as a digital photograph or on photographic film. The main features of a camera are a lens and a...

Road transport

Motor vehicles of all kinds, including cars, buses, lorries and motorcycles, all have the same basic features. Wheels and suspension allow the vehicle to roll smoothly along the...

Ships and boats

In the middle of the twentieth century, steam power began to give way to diesel power. Diesel engines are smaller, cleaner, far more efficient, and need fewer crew to operate...

Space transport

People dreamed of travelling in outer space long before rockets were invented. In 1865 the French science-fiction writer Jules Verne wrote a story about travellers to the Moon...

Telescopes

A telescope is an instrument that makes distant objects appear closer, allowing the viewer to see details that are not visible with the naked eye. Terrestrial telescopes are used...

Trains

There are three types of modern locomotive—electric, diesel-electric and diesel. High-speed trains, such as the French Train à Grande Vitesse (TGV) or the China...

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