(i) With a T-machine, a time journey is also a long space journey in a spaceship, as in Poul Anderson's The Avatar.
(ii) Corridors rotated onto the temporal axis are unique to Anderson's The Corridors Of Time.
(iii) Wells' Time Machine and the mutants in Anderson's There Will Be Time become undetectable and time dilated and can reverse temporal direction.
(iv) Time Patrol timecycles merely disappear from one set of spatiotemporal coordinates and appear at another.
(v) The Doctor's TARDIS and the time projector in Anderson's "Flight to Forever" spend a very short period of time in another realm and emerge at a very different time in the external universe.
Anderson covers every option.
3 comments:
Kaor, Paul!
I might have added THE BOAT OF A MILLION YEARS as a sixth example of "traveling" thru time. Albeit, the "natural" immortals in that book has to travel thru time second by second, minute by minute, day by day, etc., like everybody else.
Ad astra! Sean
If you include as 'time travel' something that only does fast forward but not reverse, Larry Niven's stasis field & Vernor Vinge's 'Bobbles' would count.
See several of Niven's Known Space stories for the stasis field.
See Vinge's 'Peace War' 'Marooned in Realtime' (novels) & 'The Ungoverned' (short story) for the 'bobbles'.
Jim,
Immortals aren't even "fast forward." Time travel has to involve both fast forward and reverse.
Paul.
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