nelson@avsdS.UUCP (10/11/83)
The "chameleon circuit" gives the tardis its outward appearance.
In the last Tom Baker episode ("Logopolis") he travels to Logopolis
to have them work out some formulae relating to the chameleon circuit.
Seems it is failing (along with everything else!). The circuit can
be programmed to present any outward appearance. Note that in this
and the preceding episode ("Keeper of Traken" - from whence comes
Nyssa, daughter of Keeper) the Master's tardis is shown in at least
3 different forms - the statue (I think that was a tardis), a
grandfather clock, and a pillar of rock (if memory serves me).
Glenn Nelson, Ampex, Redwood City