edgepedia

All articles A–Z

519,064 articles

Amminadab II of Ammon

Amminadab II was a king of Ammon in the later seventh century BCE, known only from the Tall Siran bronze bottle, which names him as son of King Hissal'el.

Ammistamru I

Ammistamru I, also known as Ammittamru I, was a Bronze Age king of Ugarit on the Syrian coast, subordinate to Egypt's Amenophis III and father of Niqmaddu II.

Ammistamru II

Ammistamru II, also written Ammittamru II, was king of Ugarit in western Syria in the mid-13th century BC, known for his divorce from the daughter of Benteshina of Amurru.

Ammit

Ammit (Ammut, ꜥm-mwt, "devourer of the dead") was the composite crocodile-lion-hippopotamus being who ate the hearts of the unjustified dead at the Egyptian Weighing of the Heart; she had no cult.

Ammitaqum

Ammitaqum, also written Ammitakum, was a king of Alalakh, modern Tell Atchana in Turkey, who ruled in the seventeenth century BC as the last attested king of the Level VII dynasty.

Ammodramus

Ammodramus, a New World sparrow genus (Passerellidae) named by Swainson in 1827, type species the Grasshopper Sparrow; long defined by grassland habits, shown polyphyletic by mtDNA and split into Ammospiza and related genera.

Ammodytes personatus

Ammodytes personatus, the Pacific sand lance, is a small burrowing forage fish of the North Pacific from Japan to Alaska. It lacks a swim bladder, estivates in summer, feeds on copepods, and is key prey for salmon, seabirds, and marine mammals.

Ammodytes tobianus

Ammodytes tobianus, the small sandeel or lesser sand eel, is a 20 cm sand lance of northeast Atlantic sandy shores from Murmansk to Spain, spawning in spring and autumn races and burying in sand.

Ammolite

Ammolite, also sold as calcentine, is an iridescent organic gemstone made of aragonite from the fossilized shells of ammonites about 70 to 75 million years old, mined commercially only in southern Alberta, Canada.

Ammon

Ammon: Iron Age kingdom east of the Jordan River, capital Rabbath-Ammon (modern Amman, Jordan), neighbors of Israel, Moab, and Edom; Canaanite-language Ammonite script died out by the 6th century BCE.

Ammon Bundy

Ammon Bundy, son of rancher Cliven Bundy, led the 2014 Bunkerville standoff and the 2016 Malheur refuge occupation, founded People's Rights, ran for Idaho governor, and later broke with the Trump-era far right over ICE.

Ammon Hillman

Ammon Hillman, born David C. A. Hillman, is a classicist with a PhD from the University of Wisconsin–Madison who has published alternative interpretations of early Christian origins.

Ammonia

Ammonia, also called anhydrous ammonia (NH3), is a colorless pungent gas of nitrogen and hydrogen made by the Haber-Bosch process since 1913 and used chiefly for nitrogen fertilizers.

Ammonia borane

Ammonia borane (H3BNH3, also called borazane) is the simplest boron–nitrogen hydride, a stable crystalline solid first synthesized in 1955 and re-discovered in the 2000s as a leading hydrogen storage material.

Ammonia combustion

Ammonia combustion is the burning of ammonia (NH3) as a carbon-free fuel in gas turbines, boilers, and engines, hindered by slow flames and NOx and N2O emissions.

Ammonia contamination artifact in electrochemical nitrogen reduction

The ammonia contamination artifact in electrochemical nitrogen reduction is the false detection of ammonia from sources like air and labware, which can exceed true catalytic yields.

Ammonia decomposition

Ammonia cracking is the catalytic decomposition of ammonia into nitrogen and hydrogen, used to recover hydrogen from ammonia that has been stored or shipped as a hydrogen carrier.

Ammonia fuel

Ammonia fuel is the use of ammonia, a carbon-free compound of nitrogen and hydrogen, burned directly, fed to fuel cells, or cracked to release hydrogen, with shipping as its leading early market.

Ammonia oxidation

Ammonia oxidation is the catalytic burning of ammonia to nitric oxide over platinum gauzes, the first step of the Ostwald process for making nitric acid.

Ammonia production

Ammonia production is the industrial manufacture of ammonia (NH3), chiefly via the Haber-Bosch process reacting nitrogen with hydrogen from natural gas or coal, mostly for fertilizers.

Ammonia SOFC

An ammonia SOFC is a solid oxide fuel cell that uses ammonia as its fuel, splitting it into hydrogen inside the hot anode for carbon-free electricity generation.

Ammonia solution

Ammonia solution, also known as ammonium hydroxide or aqueous ammonia, is ammonia gas dissolved in water: a colorless, alkaline liquid ranging from household cleaners to industrial reagents.

Ammonia-oxidizing archaea

Ammonia-oxidizing archaea (AOA) are Thaumarchaeota microbes that obtain energy by oxidizing ammonia to nitrite, dominating nitrification in oceans, soils, and sediments and producing most marine nitrous oxide.

Ammonite (film)

Ammonite is Francis Lee's 2020 British romantic drama starring Kate Winslet as fossil hunter Mary Anning and Saoirse Ronan as Charlotte Murchison, a fictional 1840s Lyme Regis romance premiered at TIFF 2020.

Ammonite inscriptions

Ammonite inscriptions are the written record of the Iron Age kingdom of Ammon in the Transjordan, mostly seals dating from the ninth to fifth centuries BC.

Ammonite language

Ammonite is the Canaanite language of the Iron Age kingdom of Ammon, centered on Rabbat 'Ammān (modern Amman, Jordan), attested from the 9th to the 5th centuries BCE.

Ammonite revolt against Babylon

The Ammonite revolt against Babylon was a 594/593 BC conspiracy in which an Ammonite king joined envoys of Edom, Moab, Tyre, and Sidon plotting against Nebuchadnezzar II.

Ammonites of Africa

Ammonites of Africa are fossilized coiled cephalopods preserved in African sedimentary basins from Devonian Morocco through Jurassic and Cretaceous successions in Algeria, Tunisia, Nigeria, Angola, and Madagascar.

Ammonites of Asia

Ammonites of Asia covers ammonite faunas of the Tethyan, Boreal, and Pacific marine realms across Asia, from the Himalaya and Kachchh to Siberia, Iran, and Japan.

Ammonites of Australia and Oceania

The ammonites of Australia and Oceania are fossil coiled cephalopods from Devonian to Cretaceous rocks, including the richest known Maastrichtian assemblage, in Western Australia's Miria Formation.