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28 Topic Pages Found in Technology & Engineering and starting with the letter H
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Open Hacktivism

Hacktivists is the term used to describe those who engage in hacktivism – acts that combine technologically knowledgeable hack ing techniques with the

Open Hadrian's Wall (England)
Hadrian's Wall (England)

Line of fortifications built by the Roman emperor Hadrian across northern Britain from the Cumbrian coast on the west to the North Sea on the east.

Open Hagia Sophia
Hagia Sophia

For centuries the most important church in Eastern Orthodoxy, Hagia Sophia (“Holy Wisdom”) in Constantinople (today's Istanbul) was a symbol of the

Hampton Court (Richmond upon Thames, London, England)

Former royal residence near Richmond, England, 24 km/15 mi west of central London. Hampton Court is one of the greatest historical monuments in the

Open Hang gliding
Hang gliding

Sport of flying in unpowered aircraft that are light enough to be carried by the pilot. Takeoff is usually achieved by launching into the air from a


comprehensive term for the gear of a draft animal, excluding the yoke, by which it is attached to the load that it pulls. Although harnesses are used

Harriman, Edward Henry, 1848-1909

1848–1909, American railroad executive, b. Hempstead, N.Y.; father of William Averell Harriman . He became a stockbroker in New York City and soon

Hawksmoor, Nicholas, 1661-1736

1661–1736, English architect involved in the development of most of the great buildings of the English baroque. From the age of 21 he assisted Sir

Heaviside, Oliver, 1850-1925

Place: United Kingdom, England Subject : biography, physics English physicist and electrical engineer who predicted the existence of the ionosphere,

Open Helicopters

Powered aircraft that achieves both lift and propulsion by means of a rotary wing, or rotor, on top of the fuselage. It can take off and land