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‘Oumuamua

(Encyclopedia)‘Oumuamua ōmo͞oˈəmo͞oˈə [key], officially 1I/2017 U1 (‘Oumuamua), interstellar object, the first to be discovered in the solar system. Highly variable in brightness, it also is highly and u...

Ashland

(Encyclopedia)Ashland ăshˈlənd [key]. 1 Industrial city (2020 pop. 21,625), Boyd co., E Ky., on terraces along the Ohio River near the influx of the Big Sandy; settled 1786, inc. 185...

Lanzhou

(Encyclopedia)Lanzhou or Lanchow both: länˈjōˈ [key], city (1994 est. pop. 1,295,600), capital of Gansu prov., W China, on the Huang He (Yellow River) at its confluence with the Wei. It is a rail, highway, and ...

Ketterle, Wolfgang

(Encyclopedia)Ketterle, Wolfgang, 1957–, German physicist, Ph.D. Max Planck Institute for Quantum Optics, Garching, Germany, 1986. He has been a professor at Massachusetts Institute of Technology since 1990. Kett...

precipitation, in chemistry

(Encyclopedia)precipitation, in chemistry, a process in which a solid is separated from a suspension, sol, or solution. In a suspension such as sand in water the solid spontaneously precipitates (settles out) on st...

Port Huron

(Encyclopedia)Port Huron hyo͝orˈən [key], city (1990 pop. 33,694), seat of St. Clair co., S Mich., a natural, deepwater port of entry at the junction of the St. Clair River with Lake Huron; inc. 1857. It is a sh...

Bay City

(Encyclopedia)Bay City. 1 City (2020 pop. 32,661), seat of Bay co., S Mich., a port of entry on the Saginaw River at its mouth on Saginaw Bay (an inlet of Lake ...

Wieman, Carl Edwin

(Encyclopedia)Wieman, Carl Edwin, 1951–, American physicist, b. Corvallis, Oreg., Ph.D. Stanford, 1977. He was a professor at the Univ. of Colorado from 1984 to 2006. In 2007, he joined the Univ. of British Colum...

Valles Caldera National Preserve

(Encyclopedia)Valles Caldera National Preserve väˈyās [key], 89,766 acres (36,343 hectares), N N.Mex.; est. 2000 by Valles Caldera Trust, transferred to National Park Service 2015. Formerly part of the vast, pri...

Sable Island, Nova Scotia, Canada

(Encyclopedia)Sable Island, low, sandy island, c.25 mi (40 km) long and 1 mi (1.6 km) wide, off N.S., Canada, ESE of Halifax, near the edge of the continental shelf. The crescent-shaped island is the exposed part o...