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atom

(Encyclopedia)CE5 Bohr-Rutherford atom CE5 Probability distribution of the electron in the hydrogen atom: A. Ground state B. Highly excited state atom [Gr.,=uncuttable (indivisible)], basic unit of matte...

Manchuria

(Encyclopedia)Manchuria măncho͝orˈēə [key], Mandarin Dongbei sansheng [three northeastern provinces], region, c.600,000 sq mi (1,554,000 sq km), NE China. It is officially known as the Northeast. Manchuria is ...

Saskatchewan, province, Canada

(Encyclopedia)CE5 Saskatchewan səskăchˈəwən, –wänˌ, săsˌ– [key], province (2001 pop. 978,933), 251,700 sq mi (651,903 sq km), W Canada. Original inhabitants of Saskatchewan include tribes of three...

Kyrgyzstan

(Encyclopedia)CE5 Kyrgyzstan kērgĭstänˈ [key], officially Kyrgyz Republic, republic (2015 est. pop. 5,865,000), c.76,600 sq mi (198,400 sq km), central Asia. It borders on China in the southeast, on Kazakhst...

Namibia

(Encyclopedia)CE5 Namibia nämĭbˈēə [key], officially Republic of Namibia, republic (2015 est. pop. 2,426,000), c.318,000 sq mi (823,620 sq km), SW Africa. It is bordered by Angola in the north, by Zambia in...

nucleus, in physics

(Encyclopedia)nucleus, in physics, the extremely dense central core of an atom. Following the discovery of radioactivity by A. H. Becquerel in 1896, Ernest Rutherford identified two types of radiation given off b...

Kazakhstan

(Encyclopedia)CE5 Kazakhstan or Kazakstan käˌzäkstänˈ [key], officially Republic of Kazakhstan, republic (2015 est. pop. 17,750,000), c.1,050,000 sq mi (2,719,500 sq km), central Asia. It borders on Siberia...

Wyoming, state, United States

(Encyclopedia)CE5 Wyoming wīōˈmĭng [key], least populous state in the United States, one of the Rocky Mt. states of the West. It is bordered by South Dakota and Nebraska (E), Colorado and Utah (S), Idaho (W)...

Slovenia

(Encyclopedia)CE5 Slovenia slōvēˈnēə [key], Slovene Slovenija, officially Republic of Slovenia, republic (2015 est. pop. 2,075,000), 7,817 sq mi (20,246 sq km). It is bounded in the north by Austria, in the...

Saxony

(Encyclopedia)Saxony săkˈsənē [key], Ger. Sachsen, Fr. Saxe, state (1994 pop. 4,901,000), 7,078 sq mi (18,337 sq km), E central Germany. Dresden is the capital. In its current form, Saxony is a federal state of...