39 results on '"Okun, Lev"'
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2. Epilogue to the discovery of a particle similar to the Higgs boson: August 2012
3. Particle physics prospects: August 1981
4. In memory of Aleksei Borisovich Kaidalov
5. V A Fock and gauge symmetry
6. In memory of Vladimir Vladimirovich Bronfman
7. Semen Solomonovich Gershtein (on his 80th birthday)
8. Physics-Uspekhi
9. Physics-Uspekhi
10. Mirror particles and mirror matter: 50 years of speculation and searching
11. Physics-Uspekhi
12. Physics-Uspekhi
13. Physics-Uspekhi
14. In memory of Iosif Leonidovich Rozental'
15. In memory of Konstantin Gennad'evich Selivanov
16. Critical velocities $c/\sqrt{3}$ and $c/\sqrt{2}$ in the general theory of relativity
17. Yurii Georgievich Abov (on his eightieth birthday)
18. Karen Avetovich Ter-Martirosyan (on his eightieth birthday)
19. In memory of Iosif Iosifovich Levintov
20. In memory of Vladimir Grigor'evich Firsov
21. Reply to the letter 'What is mass?' by R I Khrapko
22. Gravitation, photons, clocks
23. In memory of Rostislav Mikhailovich Ryndin
24. In memory of Iosif Solomonovich Shapiro
25. Current status of elementary particle physics
26. In memory of Vladimir Naumovich Gribov
27. In memory of Mikhail Vasil'evich Terent'ev
28. In memory of Dmitrii Vasil'evich Volkov
29. Electroweak radiative corrections in Z-boson decays
30. Vasilii Vasil'evich Vladimirskii (on his eightieth birthday)
31. Georgii Mikhailovich Kukavadze (Obituary)
32. Aleksandr Aleksandrovich Pomanskiĭ (Obituary)
33. Alekseĭ Petrovich Rudik (Obituary)
34. Bruno Maksimovich Pontecorvo (on his eightieth birthday)
35. Critical velocities <IMG ALIGN=ABSMIDDLE BORDER=0 SRC="http://www.turpion.org/inline/zzbli04.gif"> and <IMG ALIGN=ABSMIDDLE BORDER=0 SRC="http://www.turpion.org/inline/zzbli03.gif"> in the general theory of relativity
- Abstract
We consider a few thought experiments of radial motion of massive particles in the gravitational fields outside and inside various celestial bodies: Earth, Sun, black hole. All other interactions except gravity are disregarded. For the outside motion there exists a critical value of coordinate velocity
![]("http://www.turpion.org/inline/zzbli02.gif")
: particles with v < vc are accelerated by the field like Newtonian apples, and particles with v > vc are decelerated like photons. Particles moving inside a body with constant density have no critical velocity; they are always accelerated. We consider also the motion of a ball inside a tower, when it is thrown from the top (bottom) of the tower and after elastically bouncing at the bottom (top) comes back to the original point. The total time of flight is the same in these two cases if the initial proper velocity v0 is equal to![]("http://www.turpion.org/inline/zzbli03.gif")
.
36. Aleksandr Nikolaevich Skrinsky (on his seventieth birthday)
37. In memory of Valentine Telegdi
38. In memory of Karen Avetovich Ter-Martirosyan
39. In memory of Aleksandr Leonidovich Suvorov
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