edgepedia

Technology and the built world

61,984 articles

Horseshoe

A horseshoe is a crescent-shaped metal or composite plate fitted to a horse's hoof to protect it from wear, a practice possibly first done by the Celts.

Horseshoe Curve (Pennsylvania)

Horseshoe Curve is a three-track railroad curve west of Altoona, Pennsylvania, built by the Pennsylvania Railroad and opened in 1854 to carry its main line over the Allegheny Mountains.

Horsetooth Reservoir

Horsetooth Reservoir is a reservoir in the foothills west of Fort Collins, Colorado, formed by four dams in 1949 and serving as a major storage point of the Colorado-Big Thompson Project.

Horst W. Hahn

Horst W. Hahn is a German materials scientist, a University of Arizona professor elected a foreign member of the US National Academy of Engineering in 2017.

Horten Ho 229

The Horten Ho 229, also known as the Horten H.IX, was a German prototype jet-powered flying-wing fighter/bomber of World War II, designed by Reimar and Walter Horten.

Hortonworks

Hortonworks (2011-2019) was a Yahoo spinoff selling a 100% open source Apache Hadoop distribution, the Hortonworks Data Platform; it created YARN and Ambari, IPOed on Nasdaq as HDP in 2014, and merged into Cloudera in January 2019.

Hōryū-ji

Hōryū-ji (法隆寺, Temple of the Flourishing Dharma) is a Buddhist temple in Ikaruga, Nara Prefecture, Japan, whose wooden buildings include some of the world's oldest surviving structures.

Hōryū-ji (法隆寺)

Hōryū-ji (法隆寺), also known as Ikaruga-dera, is a Buddhist temple in Ikaruga, Nara Prefecture, Japan, traditionally founded in 607 and home to the world's oldest surviving wooden structures.

Hoshine Silicon Industry

Hoshine Silicon Industry is a Chinese producer of silicon metal and silicone materials headquartered in Zhejiang Province, described as the world's largest metallurgical-grade silicon producer and subject to US import restrictions since 2021.

Hoshizaki

Hoshizaki (ホシザキ, formerly Hoshizaki Electric) is a Japanese manufacturer of commercial food service equipment, best known for ice machines, founded in 1947 and headquartered in Toyoake, Aichi Prefecture.

Hosios Loukas

Hosios Loukas (Μονή Οσίου Λουκά) is a Greek Orthodox monastery in Boeotia, central Greece, a principal surviving monument of Middle Byzantine architecture and mosaic art.

Hosokawa-shi

Hosokawa-shi (細川紙) is a traditional Japanese hand-made paper of pure kozo fibers, made in Ogawa Town and Higashi-chichibu Village in Saitama Prefecture and inscribed by UNESCO in 2014.

HOSPI

HOSPI (ホスピー) is an autonomous delivery robot made by Panasonic that carries medicines, specimens, and documents through hospital corridors and elevators without rails or tapes; development began in 1998.

Hospicio Cabañas

Hospicio Cabañas is a monumental Neoclassical complex in Guadalajara, Mexico, built in the early 19th century as a hospice for orphans and the needy and now home to the Museo Cabañas.

Hospital Israelita Albert Einstein

Hospital Israelita Albert Einstein is a private, nonprofit general hospital in the Morumbi district of São Paulo, Brazil, opened in 1971 by the city's Jewish community.

Hospital ship

Hospital ship: a floating medical treatment vessel protected under the Second Geneva Convention. Examples include the US Navy's Mercy-class USNS Mercy and Comfort, China's Peace Ark, and Mercy Ships' Global Mercy.

Hossam Haick

Hossam Haick is a Technion professor of chemical engineering who pioneered the NA-NOSE breath test, showing in 2009 that gold-nanoparticle sensors can detect lung cancer in exhaled breath.

Host (network)

A network host, also called a host computer, is a computer or device attached to a network that runs application programs for users and consumes rather than forwards communication services.

Host Identity Protocol

The Host Identity Protocol (HIP) is an IETF network-layer protocol, developed since 1999, that separates identification from location by binding hosts to public keys instead of IP addresses.

Host-based intrusion detection system

A host-based intrusion detection system (HIDS) is a security program installed on a single computer that detects intrusions by monitoring its logs, processes, files, and configuration changes.

Hosted payload

A hosted payload is a sensor or instrument attached to another party's satellite, sharing its power and communications; a NASA study found it saves nearly half the mission cost.

Hostel

A hostel, also called a youth hostel, is budget accommodation offering beds in shared dormitories or private rooms with communal kitchens and bathrooms, first conceived in Germany in 1909.

Hosting capacity

Hosting capacity is the maximum amount of distributed energy resources, including rooftop solar and battery storage, that an existing electric distribution grid can accommodate safely without infrastructure upgrades.

Hostinger

Hostinger is a private Lithuanian web hosting company founded in 2004 as Hosting Media and headquartered in Vilnius, offering shared, cloud, and VPS hosting, domains, and AI-driven website-building tools.

Hostname

A hostname, also called a nodename, is a label, or dot-separated sequence of labels, that names a device on a network, most commonly on the Internet.

Hosts (file)

The hosts file, historically HOSTS.TXT, is a plain-text system file that maps hostnames to IP addresses and can override DNS answers. Malware often tampers with it.

Hot air balloon

A hot air balloon is a lighter-than-air aircraft lifted by heated air inside a fabric envelope, invented by the Montgolfier brothers in 1783 and modernized by Ed Yost in 1960.

Hot air ballooning

Hot air ballooning is the sport of flying an unsteered balloon lifted by heated air, begun by the Montgolfier brothers in France in 1783 and modernized by Ed Yost in 1960.

Hot Bird

Hot Bird is a family of Eutelsat broadcasting satellites at 13 degrees East, relaying around 900 television channels to homes across Europe, North Africa, and the Middle East.

Hot carrier injection

Hot carrier injection (HCI), also called hot carrier degradation, is a reliability failure mechanism in MOSFETs in which energetic carriers inject into the gate oxide and permanently shift the threshold voltage.