Arno Allan Penzias (born 26 April 1933) is an American physicist, radio astronomer and Nobel laureate in physics who is co-discoverer of the cosmic microwave background radiation, which helped establish the Big Bang theory of cosmology.
Penzias was born in Munich, Germany, the son of Justine (née Eisenreich) and Karl Penzias, who ran a leather business. At age six, he was among the Jewish children evacuated to Britain as part of the Kindertransport rescue operation. Some time later, his parents also fled Nazi Germany for the U.S., and the family settled in the Garment District of New York City in 1940. In 1946, Penzias became a naturalized citizen of the United States. He graduated from Brooklyn Technical High School in 1951 and after enrolling to study chemistry at the City College of New York, he graduated in physics near the top of his class in 1954.
Following graduation, Penzias served for two years as a radar officer in the U.S Army Signal Corps. This led to a research assistantship in the Columbia University Radiation Laboratory, which was then heavily involved in microwave physics. Penzias worked under Charles Townes, who later invented the maser. In 1956 Penzias enrolled as a student at Columbia and by 1962 had been awarded a Ph.D..
The Arno is a river in the Tuscany region of Italy. It is the most important river of central Italy after the Tiber.
The river originates on Mount Falterona in the Casentino area of the Apennines, and initially takes a southward curve. The river turns to the west near Arezzo passing through Florence, Empoli and Pisa, flowing into the Tyrrhenian Sea at Marina di Pisa.
With a length of 241 kilometres (150 mi), it is the largest river in the region. It has many tributaries: Sieve at 60 kilometres (37 mi) long, Bisenzio at 49 kilometres (30 mi), and the Era, Elsa, Pesa, and Pescia. The drainage basin amounts to more than 8,200 square kilometres (3,200 sq mi) and drains the waters of the following subbasins:
Arno Atoll (Marshallese: Arņo, [ɑ̯ɑɳˠːʌ͡ɔɔ̯]) is a coral atoll of 133 islands in the Pacific Ocean, and forms a legislative district of the Ratak Chain of the Marshall Islands. Its total land area is only 5 square miles (13 km2). Unlike most other atolls, Arno encloses three different lagoons, a large central one, and two smaller ones in the north and east. Its main lagoon encloses an area of 130.77 square miles (338.7 km2). At a distance of only 20 kilometres (12 mi), it is the closest atoll to the Marshall Islands capital, Majuro Atoll, and can be seen looking east from Majuro on a clear day at low tide.
The population of Arno Atoll was 2,069 at the 1999 census. The most populous islets are Ajeltokrok, Kobjeltak, Rearlaplap, Langor and Tutu. The largest village is Ine, Arno.
People of Arno are well known for their productivity in making copra (the dried out meat of coconuts, from which coconut oil is extracted). Arno women are renowned for their production of the Kili Bag, a popular handwoven handbag/purse, named after another island in the Marshall Islands (to which the people of Bikini were eventually relocated as a result of the US nuclear tests that were conducted on their home atoll). Arno supposedly had a traditional "love school".
The Arno is a river in the Tuscany region of Italy.
Arno may also refer to: