Physics laboratory.

Mode of access: Internet.

U(2) flavor physics without U(2) symmetry

We present a model of fermion masses based on a minimal, non-Abelian discrete symmetry that reproduces the Yukawa matrices usually associated with U(2) theories of flavor. Mass and mixing angle relations that follow from the simple form of the quark and charged lepton Yukawa textures are therefore common to both theories. We show that the differing representation structure of our horizontal symmetry allows for new solutions to the solar and atmospheric neutrino problems that do not involve modification of the original charged fermion Yukawa textures, or the introduction of sterile neutrinos. (C) 2000 Elsevier Science B.V.

Chemical Laboratory U of M

A. J. Jordan, architect. Built in 1856. First chemical laboratory at a state university. Building served medical students and others as both laboratory and classroom. Situated just west and south of the original medical building. Additions made to the one-story building in 1861, 1866, 1868, 1874. In 1880 a two-story addition was added with subsequent additions in 1889 and 1901. Became Economics Building in 1908. Pharmacology occupied north wing 1908-1981. Destroyed by fire Christmas Eve 1981. Two people in the image

Randall Physics Laboratory

Albert Kahn, architect. Built 1924. East University on site of old medical building which was razed in 1914. Also called New Physics and East Physics. Photographer's stamp on verso.

Engineering Laboratory - U of M

Photograph of drawing by Benno Rohnert. On verso: "Center- First Engineering Bldg. Brick & frame 1881-82. Right-Abandoned campus carpenter shop moved against west side 1883 and used for wood shop. Left-First unit of 3 story brick building started 1885" Original two buildings removed in 1888.

Propagation of elastic waves through structural connections. Work carried out...for the Applied Physics Laboratory, Johns Hopkins University under contract number APL/CU-33031-2.

[1] Progress report no. 1, Jan. 15, 1954.--[2] Final report, June 30, 1954.

Excavation for New Physical Science East University [Randall Physics Laboratory]

Albert Kahn, architect. Built 1924. East University on site of old medical building which was razed in 1914. Also called New Physics and East Physics.

Excavation for new Physical Science Building [Randall Physics Laboratory]

Albert Kahn, architect. Built 1924. East University on site of old medical building which was razed in 1914. Also called New Physics and East Physics.

Excavation for new Physical Science Building [Randall Physics Laboratory]

Albert Kahn, architect. Built 1924. East University on site of old medical building which was razed in 1914. Also called New Physics and East Physics.

Excavation for new Physical Science Building [Randall Physics Laboratory]

Albert Kahn, architect. Built 1924. East University on site of old medical building which was razed in 1914. Also called New Physics and East Physics.

Randall Physics Laboratory

Albert Kahn, architect. Built 1924. East University on site of old medical building which was razed in 1914. Also called New Physics and East Physics.

Randall Physics Laboratory

Albert Kahn, architect. Built 1924. East University on site of old medical building which was razed in 1914. Also called New Physics and East Physics.