All articles starting with H

H3S superconductor

H3S, or sulfur trihydride, is a hydrogen-rich compound that superconducts at 203 K under about 155 GPa of pressure, first reported in 2015 by researchers at the Max Planck Institute for Chemistry.

H4 robot

The H4 is a four-degree-of-freedom parallel robot proposed by François Pierrot and Olivier Company at LIRMM in 1999, giving three translations and one rotation for high-speed pick-and-place handling.

The H5 inverter topology is a single-phase transformerless photovoltaic grid-connected inverter circuit proposed by SMA Solar Technology in 2005, adding a fifth switch to the H-bridge to suppress leakage current.

H6 (robot)

H6 is a prototype humanoid robot completed in June 2000 by Kawada Industries for the University of Tokyo's JSK Laboratory as a platform for full-body sensing and control research.

H6 inverter topology

The H6 inverter topology is a single-phase transformerless grid-tied inverter for photovoltaic systems, proposed in 2007 by Ingeteam, whose two extra switches suppress ground leakage current.

Ha Chong-hyun

Ha Chong-hyun (하종현, born 1935 in Sancheong, South Korea) is a Korean painter and leading Dansaekhwa figure known for the Conjunction series, pushing oil paint through hemp canvas from behind.

Sep 24, 2026

Ha Gong-jin

Ha Gong-jin (하공진, 河拱辰) was a Goryeo official and envoy who negotiated the withdrawal of the Khitan army in 1011 and was executed after refusing to serve them.

Ha Ha Clinton-Dix

Ha Ha Clinton-Dix, American football safety (2014-2021); Green Bay Packers first-round pick (21st overall, 2014) from Alabama; 2016 Pro Bowl and second-team All-Pro; 98 games, 90 starts; retired as a Packer in 2022.

Oct 3, 2026

Ha Ha Ha (하하하)

Ha Ha Ha (하하하) is Hong Sangsoo's 2010 South Korean comedy-drama, his tenth feature, in which a filmmaker and a film critic recall separate trips to Tongyeong; it won the 2010 Cannes Un Certain Regard Prize.

Ha Ha Tonka State Park

Ha Ha Tonka State Park is a roughly 3,700-acre Missouri state park near Camdenton on the Lake of the Ozarks, featuring ruins of Robert Snyder's 1905 stone castle, Missouri's 12th-largest spring, karst gorges, and over 15 miles of trails.

Ha Hyeong Ju

Ha Hyeong Ju (하형주, Ha Hyung-joo), born 1962, South Korean judoka; 1984 Los Angeles Olympic gold in men's half-heavyweight (–95 kg), Korea's first Olympic judo gold; world silver 1985, bronze 1987; later Dong-A University professor and sports administrator.

Ha Ji-won (하지원)

Ha Ji-won (하지원), born Jeon Hae-rim in 1978, is a South Korean actress known for Damo, Hwang Jin-yi, Secret Garden, and Empress Ki, with KBS and MBC Daesang wins, and the 2026 ENA drama Climax.

Ha Jin

Ha Jin (哈金), pen name of Jin Xuefei (born 1956, Liaoning), Chinese-American novelist and poet writing in English; National Book Award winner for Waiting (1999), exiled after Tiananmen, author of War Trash and A Map of Betrayal.

Ha Jung-woo (하정우)

Ha Jung-woo (하정우; born Kim Sung-hoon, 1978) is a South Korean actor, director, and screenwriter, son of actor Kim Yong-gun. Breakthrough in The Unforgiven (2005); hits include The Chaser, Take Off, The Yellow Sea, The Handmaiden, Tunnel; four films directed.

Hạ Long

Hạ Long (Ha Long City), coastal city in Quang Ninh, northeastern Vietnam, gateway to Ha Long Bay World Heritage site; provincial capital until 1 July 2025, now an expanded Class II urban area of Quang Ninh City.

Hạ Long Bay

Hạ Long Bay (Vịnh Hạ Long), northeastern Viet Nam, Gulf of Tonkin bay of limestone tower karst; UNESCO World Heritage 1994, 2000, extended 2023 with Cat Ba Archipelago; 65,650 ha, 1,133 islands, heavy tourism and conservation pressure.

Oct 20, 2026

Ha Long Bay - Cat Ba Archipelago

Ha Long Bay - Cat Ba Archipelago (Vịnh Hạ Long) is a UNESCO World Heritage Site in northeastern Viet Nam, inscribed in 1994 for its scenic sea-covered tower karst.

Hà My massacre

The Hà My massacre was the killing of 135 villagers by South Korean marines in Quảng Nam Province, Vietnam, on 25 February 1968, during the Vietnam War.

Hà Nội băm sáu phố phường

Hà Nội băm sáu phố phường, also known as Hanoi's Thirty-Six Streets and Wards, is a 1943 essay collection by Thạch Lam portraying Hanoi's streets and foods.

Ha Seok-jin (하석진)

Ha Seok-jin (하석진) is a South Korean actor and Hanyang University mechanical engineering graduate who debuted via CFs and the drama Sad Love Story, won Netflix's The Devil's Plan season 1, and leads KBS2's 2026 weekend drama Love Is Coming (사랑이 온다), which hit a 16.6% rating.

Ha Sung-woon (하성운)

Ha Sung-woon (하성운, Sungwoon), South Korean singer-songwriter born 1994; Hotshot main vocalist, Wanna One member via Produce 101 Season 2, solo debut My Moment (2019), "With you" with BTS Jimin, now under BPM Entertainment.

Ha Tae Gwon

Ha Tae Gwon (하태권, Ha Tae-Kwon), born 1975, South Korean badminton player; men's doubles gold at Athens 2004 and bronze at Sydney 2000 with Kim Dong-Mun, plus 1999 world title.

Hà Tiên

Hà Tiên (河仙) is a coastal town in Kiên Giang province, southwestern Vietnam, on the Cambodian border, once the seat of an eighteenth-century port polity under the Mạc clan.

Hà Tĩnh

Tỉnh Hà Tĩnh (Ha Tinh province), North Central Vietnam; established 1831 under Minh Mệnh, re-established 1991. Borders Nghệ An, Quảng Trị, Laos; 5,994.85 km², 69 commune-level units, birthplace of Nguyễn Du.

Ha Wi-ji

Ha Wi-ji (하위지, 1412–1456, pen name Dan-gye) was a Joseon Korean civil official executed in 1456 as one of the six martyred ministers for plotting to restore King Danjong.

Sep 24, 2026

Ha Yun

Ha Yun (하연, 1376–1453) was a Joseon civil official and disciple of Jeong Mong-ju who served as chief state councillor under Sejong and Munjong, consolidating the Buddhist orders in 1423.

Ha-Chan, Shake Your Booty!

Ha-Chan, Shake Your Booty! (愛到舞春) is a 2026 American comedy-drama by Josef Kubota Wladyka starring Rinko Kikuchi as a Tokyo widow returning to ballroom dancing; Sundance 2026 Directing Award winner, released by Sony Pictures Classics September 25, 2026.