Reviews of topical problems

I.B. Bersuker, B.J. Vekhter, I.Ya. Ogurtsov “Tunnel effects in polyatomic systems with electronic degeneracy and pseudodegeneracy” Sov. Phys. Usp. 18 569–587 (1975)

A.V. Nedospasov “Current-convective instability of a gas-discharge plasma” Sov. Phys. Usp. 18 588–599 (1975)

M.K. Gailitis “The strong-coupling method in the theory of electron-atom collisions” Sov. Phys. Usp. 18 600–611 (1975)

Physics of our days

V.P. Chechev, Ya.M. Kramarovskii “Transactinium elements in the evolving universe” Sov. Phys. Usp. 18 612–623 (1975)

Methodological notes

E.L. Feinberg “Can the relativistic change in the scales of length and time be considered the result of the action of certain forces?” Sov. Phys. Usp. 18 624–635 (1975)

B.M. Smirnov “Analysis of the nature of ball lightning” Sov. Phys. Usp. 18 636–640 (1975)

Meetings and conferences

F.G. Bass, S.Ya. Braude, A.I. Kalmykov, A.V. Men’, I.Y. Ostrovskii, V.V. Pustovoitenko, A.D. Rozenberg, I.M. Fuks “Radar Methods for the Study of Ocean Waves (Radiooceanography)” Sov. Phys. Usp. 18 641–642 (1975)

A.E. Basharinov, L.F. Borodin, A.S. Gurvich, M.S. Malkevich, A.M. Shutko “Microwave Radiometry Studies of the States of Continental Covers and Bodies of Water” Sov. Phys. Usp. 18 642–644 (1975)

Yu.M. Chesnokov, V.A. Kottsov “Selection of Spectral Sensitivity for Optical Systems Used in Studying the Earth from Space” Sov. Phys. Usp. 18 644–645 (1975)

R.I. Personov “The Sharp Narrowing of Spectral Bands of Organic Molecules Under Laser Excitation” Sov. Phys. Usp. 18 645–646 (1975)

Personalia

B.M. Vul, B.T. Kolomiets, S.M. Ryvkin, V.M. Tuchkevich, Yu.I. Ukhanov “Dmitrii Nikolaevich Nasledov (obituary)” Sov. Phys. Usp. 18 647–648 (1975)