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boring mill

(Encyclopedia)boring mill, machine tool used to increase the size of a hole previously made in a workpiece, usually with the purpose of obtaining a required degree of finish and accuracy in the final hole. In a hor...

Siegbahn, Karl Manne Georg

(Encyclopedia)Siegbahn, Karl Manne Georg, 1886–1978, Swedish physicist. In 1913, he began a series of experiments that led to the discovery of the M series of X rays and demonstrated the shell arrangement of elec...

piquet

(Encyclopedia)piquet or picquet both: pēkāˈ [key], card game played by two persons with a deck of 32 cards—7 (low) up to ace (high) in each suit. Each player receives 12 cards, and eight cards are left on the ...

Lowell National Historical Park

(Encyclopedia)Lowell National Historical Park: see Lowell; National Parks and Monuments (table)national parks and monuments (table). ...

National Park of American Samoa

(Encyclopedia)National Park of American Samoa: see American Samoa; National Parks and Monuments (table)national parks and monuments (table). ...

Richmond National Battlefield Park

(Encyclopedia)Richmond National Battlefield Park: see Richmond, Va.; National Parks and Monuments (table)national parks and monuments (table). ...

Scotts Bluff National Monument

(Encyclopedia)Scotts Bluff National Monument: see Scottsbluff; National Parks and Monuments (table)national parks and monuments (table). ...

Shiloh National Military Park

(Encyclopedia)Shiloh National Military Park: see Shiloh, battle of; National Parks and Monuments (table)national parks and monuments (table). ...

Channel Islands National Park

(Encyclopedia)Channel Islands National Park: see Channel Islands, California; National Parks and Monuments (table)national parks and monuments (table). ...

Tupelo National Battlefield

(Encyclopedia)Tupelo National Battlefield: see Tupelo, Miss.; National Parks and Monuments (table)national parks and monuments (table). ...