Technology and the built world

Hector SLAM

Hector SLAM is an open-source 2D SLAM system that builds occupancy grid maps from laser scanner data without wheel odometry, developed at TU Darmstadt in 2011.

Hedgehog (weapon)

Hedgehog, or Hedgehog mortar, was a British ahead-throwing anti-submarine weapon of World War II, adopted in 1942, firing 24 contact-fuzed projectiles ahead of an escort ship.

Hedi Mattoussi is a materials and nanoscience chemist known for quantum dot bioconjugates, now Distinguished Research Professor at Florida State University after twelve years at the Naval Research Laboratory.

Sep 20, 2026

Hee‐Tae Jung

Hee-Tae Jung (정희태) is a South Korean materials chemist and KAIST Chair Professor known for liquid-crystal lithography, graphene imaging, and active-learning catalyst design for water splitting.

Hee‐Tak Kim

Hee-Tak Kim (김희탁) is a South Korean electrochemical energy researcher and professor of chemical and biomolecular engineering at KAIST, working on fuel cells, water electrolysis, and lithium and aqueous batteries.

Heemin Kang

Heemin Kang (강희민) is a South Korean biomedical and biomaterials engineer and associate professor at Korea University in Seoul, known for dynamic ligand nanoassembly that regulates stem cell and macrophage behavior.

Heeresfeldbahn

A Heeresfeldbahn (German for "army field railway") was a lightly built, usually 600 mm gauge military railway operated by the German army to move supplies and troops.

HEFA (biofuel)

HEFA (hydroprocessed esters and fatty acids), also called HEFA-SPK or HRJ, is a biofuel pathway that converts vegetable oils, animal fats, and used cooking oils into jet fuel and diesel.

Hefei Lujiang power station

Hefei Lujiang power station (神皖合肥庐江发电厂) is a coal-fired power station in Lujiang County, Hefei, Anhui, China, whose two 660 MW ultra-supercritical units entered service in 2018.

Hefei power station

Hefei power station (皖能合肥发电厂) is a 1,260 MW coal-fired power station in Luyang District, Hefei, Anhui, China, whose current two 630 MW units began operation in 2009 and 2013.

HEG (Indian company)

HEG Limited is an Indian graphite electrode manufacturer founded in 1972, part of the LNJ Bhilwara Group, exporting over 70% of production to more than 30 countries.

Hegang power station

Hegang power station, also known as Huaneng Hegang power station, is a 1,200 MW coal-fired power station in Hegang, Heilongjiang, China, owned by Huaneng Power International.

HEICO Corporation

HEICO Corporation, founded in Miami in 1957, is a Florida aerospace company known as the largest independent maker of FAA-approved jet engine and aircraft replacement parts.

Heidelberg Castle

Heidelberg Castle (Heidelberger Schloss) is a famous red sandstone ruin on the Königstuhl hill above Heidelberg, Germany, built as the residence of the counts palatine and prince electors of the Palatinate.

Heidelberg Materials

Heidelberg Materials is a German building materials company headquartered in Heidelberg. Founded in 1873, it employs 49,000 people in almost 50 countries, with €21.5 billion revenue in 2025.

Heidenhain

Heidenhain is a German manufacturer of measurement, control, and drive technology in Traunreut, founded in Berlin in 1889 and known for its linear encoders and TNC numerical controls for machine tools.

Heidrun oil field

Heidrun is an oil and gas field in the Norwegian Sea off Mid-Norway, discovered in 1985 and producing since 1995 from the world's first floating concrete tension-leg platform.

Heiko O. Jacobs

Heiko O. Jacobs, also known as Heiko Jacobs, is a nanotechnology researcher and professor at Technische Universität Ilmenau who studies charge patterning and self-assembly at the nanometer scale.

Heilbronn power station

Heilbronn power station (German: Heizkraftwerk Heilbronn) is a coal-fired combined heat and power plant on the Neckar river in Heilbronn, Germany, operated by EnBW and first commissioned in 1923.

Heilmann locomotive

The Heilmann locomotive was a steam-electric locomotive developed in France in the 1890s by engineer Jean-Jacques Heilmann, first run as La Fusée électrique in 1893.

Heilongjiang Baoqing power station

Heilongjiang Baoqing power station (神华国能宝清发电厂), also known as Shenhua Baoqing, is a 1,200 MW coal-fired power station in Baoqing County, Heilongjiang, China, commissioned in 2020.

Heimifeng hydroelectric plant

Heimifeng hydroelectric plant (黑麋峰抽水蓄能电站) is a 1,200 MW pumped-storage power station near Changsha, Hunan, China, the first of its kind built in the province, fully operational since 2010.

Heinkel He 111

The Heinkel He 111 was a German twin-engined medium bomber that served as the Luftwaffe's standard bomber from the late 1930s through World War II, with over 7,000 built.

Heinkel He 112

The Heinkel He 112, also designated A7He1 in Japan, was a German single-seat fighter of the mid-1930s that lost to the Messerschmitt Bf 109 in the Luftwaffe's first monoplane fighter competition.

Heinkel He 178

The Heinkel He 178 was a German experimental aircraft that on 27 August 1939 made the world's first turbojet-powered flight, flown by Erich Warsitz at Rostock.

Heinkel He 277

The Heinkel He 277 was a projected four-engine heavy bomber for the German Luftwaffe in World War II, derived from the He 177 and canceled in 1944.

Heinkel He 343

The Heinkel He 343, also known as the Strabo 16, was a four-engine jet bomber projected for the German Luftwaffe in 1944 and canceled before any prototype flew.

Oct 10, 2026

Heinrich Müller-Breslau

Heinrich Müller-Breslau (1851–1925) was a German civil engineer and professor of structural statics in Berlin, regarded as the creator of classical Baustatik, the German theory of structures.

Heinz

Heinz, originating with the H.J. Heinz Company founded in 1869, is an American food brand best known for Heinz Tomato Ketchup and its "57 Varieties" slogan.