general physics stuff --------------------- * what happens if you drop one end of a Thorne-style wormhole down a black hole and leave the other end outside? (As in Shamima's favourite little story "Approaching Perimelasma".) Ostensibly, you can go down with the dropped end, through the event horizon, and then pop through the wormhole just as you and it are about to hit the singularity. Thus the teleologically-defined true horizon is radically altered - the object as a whole might not even strictly speaking be a black hole any more! Does this make sense? What does it do to the corpus of area / entropy theorems etc? (John Hassard recommends Tom Kibble as someone to go to. Kelly Stelle says you have to be very careful about just "moving around" things like Thorne-style wormholes - their very construction may imply that only certain spacetime histories are permitted around them.) * Phys Rev D, 25:942 [1982] and 29:1047 [1984]: Unruh & Wald's classic treatment of black hole thermodynamics. * David Deutsch's New Scientist 20/09/1997 p52 review of "Achilles in the Quantum Universe" by Richard Morris: there's a throwaway remark about uses of *transfinite numbers* in physics!!! (on "rare occasions".) ---does he [Deutsch] have references about this? * physics refs from Andy Albrecht: * http://euclid.tp.ph.ic.ac.uk/~albrecht/astro-course (his home page) * John Preskill: hep-th of ~early 1990s: review article on the black hole information problem. * Susskind, t'Hooft: general black-hole / future-of-universe stuff. * what on earth is Physics Today's "room-temperature ice"?! (~mid-1995) * spacelike "lasers"! (PRL 72 p596) * Deutsch on non-pure, non-unitary time travel: Phys Rev D 15/11/1991. * Web addresses in SciAm 03/1994, + www.cityscape.co.uk (not sure this is physics-related) * pilgrimage to Sangam? - esp. "The Many Phases of Matter"; "Raman and His Effect".