Reviews of topical problems

A.V. Guglielmi “Ultra-low-frequency electromagnetic waves in the Earth’s crust and magnetosphere” Phys. Usp. 50 1197–1216 (2007)

Methodological notes

V.S. Popov “Feynman disentangling оf noncommuting operators and group representation theory” Phys. Usp. 50 1217–1238 (2007)

A.A. Snarskii “Did Maxwell know about the percolation threshold? (on the fiftieth anniversary оf percolation theory)” Phys. Usp. 50 1239–1242 (2007)

Instruments and methods of investigation

A.V. Kozlovskii “Generation оf squeezed (sub-Poissonian) light by а multimode laser” Phys. Usp. 50 1243–1258 (2007)

From the history of physics

G.V. Kiselev, V.N. Konev “History of the realization of the thorium regime in the Soviet Atomic Project” Phys. Usp. 50 1259–1282 (2007)

Personalia

A.F. Andreev, V.S. Beskin, V.B. Braginsky, V.L. Ginzburg, Yu.V. Gulyaev, V.V. Kozlov, N.P. Laverov, M.B. Menskii, L.B. Okun, V.A. Rubakov, V.A. Sadovnichii, V.E. Fortov “Oleg Vladimirovich Rudenko (on his 60th birthday)” Phys. Usp. 50 1283–1285 (2007)

S.N. Bagaev, V.V. Brazhkin, Yu.M. Kagan, L.V. Keldysh, Yu.A. Litvin, V.A. Matveev, S.V. Popova, V.N. Ryzhov, V.A. Somenkov, V.B. Timofeev, L.A. Falkovsky “Sergei Mikhailovich Stishov (on his 70th birthday)” Phys. Usp. 50 1287–1288 (2007)

Physics news on the internet

Yu.N. Eroshenko “Physics news on the Internet (based on electronic preprints)” Phys. Usp. 50 1289–1290 (2007)

N.V. Gribkova “Author index Volume 50, 2007” Phys. Usp. 50 1291 (2007)

E.A. Frimer “Subject index Volume 50, 2007” Phys. Usp. 50 1294 (2007)

“Concordance table of page numbers of papers in the English and Russian editions: Physics-Uspekhi Volume 50, 2007 Uspekhi Fizicheskikh Nauk Volume 177, 2007” Phys. Usp. 50 1299 (2007)