By this time TARDISes have evolved to point where they appear human and reproduce sexually ( the Doctor's companion Compassion is the first such TARDIS ).

Also in " The Doctor's Wife ", the TARDIS reveals that much of this " unpredictability " was actually intentional on her part in order to get the Doctor " where needed to go " as opposed to where he " wanted to go ".

Although " TARDIS " is a type of craft rather than a specific one, the Doctor's TARDIS is usually referred to as " the " TARDIS or, in some of the earlier serials, just as " the ship ", " the blue box ", " the capsule " or even " the police box " and with the new Doctor " Sexy ".

They are also said to draw power from the entire universe as revealed in the episode " Rise of the Cybermen " ( 2006 ), in which the TARDIS is brought to a parallel universe and cannot function without the use of a crystal power source from within the TARDIS, charged by the Doctor's life force.

However, the Doctor's TARDIS has been seen to be able to fly through physical space, first in " Fury from the Deep " ( 1968 ) and at repeated times throughout the revived series, most notably in " The Runaway Bride " ( 2006 ), in which the TARDIS is shown launching into space ( most previous incidents show the TARDIS flying only after it has dematerialised from a location ).

Susan Foreman, the Doctor's granddaughter, claimed to have coined the name TARDIS: " I made up from the initials.

" This does not apply when facing certain extremely advanced weaponry, often created after the Doctor's Type 40 TARDIS, such as Dalek missiles (" The Parting of the Ways "), for which the TARDIS requires additional shielding.

In the program, the Doctor's TARDIS is an obsolete " Type 40 TT capsule " that he unofficially " borrowed " when he departed his home planet of Gallifrey.

In " The Eleventh Hour " the TARDIS completely changes after crashing, and the Doctor's comment " What have you got for me this time?

" In " The Doctor's Wife " the TARDIS says she has 30 desktops archived, although the Doctor has only changed it a dozen times " yet ".

Although a TARDIS is supposed to blend inconspicuously into whatever environment it turns up in, the Doctor's TARDIS retains the shape of a police box because of a systems fault which occurred in the first Doctor Who episode, " An Unearthly Child ," when the TARDIS landed in London in 1963.

The Doctor attempts to repair the circuit in " Logopolis " and " Attack of the Cybermen ", but the successful transformation of the TARDIS into the shapes of a pipe organ, a painted Welsh dresser ( much to the amusement of Perpurgilliam " Peri " Brown and the Sixth Doctor's annoyance ) and an elaborate gateway in the latter serial was followed by a return to the police box shape.

In " The Invasion of Time ," a Citadel Guard on Gallifrey is initially baffled by the archaic lock when attempting to open the Doctor's TARDIS.

In " The Doctor's Wife ," the TARDIS implies that she deliberately unlocked herself so the Doctor could steal her.

The Doctor almost always opens the doors inwards, despite the fact that real police boxes open outwards ; in " The Doctor's Wife ", it is revealed the TARDIS is aware of this and finds it annoying.

Alien influences have also, for example, trapped the Doctor's TARDIS and drained its power in " The Web Planet " ( 1965 ) and " Death to the Daleks " ( 1974 ), while its course has been diverted by " The Keeper of Traken " ( 1981 ), the " Mandragora Helix " ( 1976 ) and by the Daleks ' " time corridor " in " Resurrection of the Daleks " ( 1984 ).

It was Beria, through an official pronouncement by the Ministry of Internal Affairs ( MVD ) and not by the Central Committee or the Council of Ministers, who renounced the Doctor's Plot as a fraud.

The exception being those areas where, up to the 19th century, civil law rather than common law was the governing tradition, including admiralty law, probate and ecclesiastical law, such cases were heard in the Doctor's Commons, and argued by advocates who held degrees either of doctor of civil law at Oxford or doctor of law at Cambridge.

The concluding episodes of the fourth season, " The Stolen Earth "/" Journey's End ", reveal that Davros was thought to have died during the first year of the Time War, when his command ship " flew into the jaws of the Nightmare Child " at the Gates of Elysium, despite the Doctor's failed efforts to save him.

He explained that he would not like to be the one to kill off one of the Doctor's greatest enemies, having supposedly killed off the Master ( although he was revived later in The End of Time, where he seemingly perishes again ).

During the first decade of the television series, the name of the Doctor's home planet was not revealed, although it was actually shown for the first time in The War Games ( 1969 ) during the Doctor's trial.

However, BBC books such as The Infinity Doctors and Unnatural History imply that the Doctor's origin is complex and that every version is somehow " true " ( such as Susan's claim in the original version of An Unearthly Child that she was born in the 49th century ).

In 1909, the Opel 4 / 8 hp model, known as the " Doctor's Car " was produced.

Since he was originally intended as a temporary medical backup system, not as an artificial life form, considerable strains were placed on the Doctor's program during the early parts of the journey.

The Doctor's standard greeting was " Please state the nature of the medical emergency " when activated, though later modified to say whatever he chose.

Unlike most computer programs, the Doctor's program was never copied or backed up.

One recurring theme in the Doctor's life was his lack of a name.

Before the arrival of the mobile emitter, The Doctor's holo-program was confined only to the Sickbay and the holodecks.

The sonic screwdriver was first introduced in 1968, and was used regularly throughout the Second Doctor's tenure.

During the Third Doctor's tenure, producer Barry Letts was adamant that the device not become a cure-all for the series, and limited its use to avoid writers becoming over-reliant on it.

Aside from unlocking doors, the device was greatly downplayed during the Fourth Doctor's second and third seasons.

Later on we saw that it was smaller and sleeker than the Doctor's, and he was sufficiently impressed with her design that he attempted ( unsuccessfully ) to swap screwdrivers with her in Horns of Nimon.

The design of the prop was meant to imply that the Master constructed it on Earth, and it was deliberately made larger than the Doctor's sonic screwdriver.

Like the Doctor's screwdriver and Sarah Jane's lipstick, the Master's laser screwdriver was also created as a children's toy with sound effects.

" He was disillusioned with the glory of death in combat after being mortally wounded while fighting the Headless Monks at the Battle of Demons Run, though, and he firmly corrected fellow nurse Rory Williams when the Doctor's companion called him a warrior, telling him, " I'm a nurse.

Davros furiously refuses the Doctor's offer to take him to safety, accusing him of being responsible for the destruction, screaming: " Never forget, Doctor, you did this!

This provides a possible explanation for existence of Irving Braxiatel, a Time Lord who claims to be the Doctor's brother yet is not one of the cousins from Lungbarrow and the implication in The Gallifrey Chronicles that the character Marnal is The Master's father ( whose existence is mentioned in The End of Time ).

The " Doctor's Car " sold for only 3, 950 marks, about half as much as the luxury models of its day.

Janeway's other interactions with her crew include helping the ex-Borg Seven of Nine reclaim her individuality and humanity and advocating for the Doctor's status as a sentient being.

Despite the Doctor's claim not to give his screwdriver to anyone, he gives one to his own doppelgänger in " The Rebel Flesh ", and either gives or loans one to Rory Williams for use in " A Good Man Goes to War ", having previously loaned one to Rory in " The Big Bang ".

By the time of " The Pirate Planet ," the Doctor had been travelling on board in time and space for 523 years and by the time of " The Doctor's Wife ", he had been travelling in it for 700 years.

In " The Empty Child " ( 2005 ), the Ninth Doctor claimed that he has had " 900 years of phone box travel ", while " The Doctor's Wife " says they've been travelling together for only 700 years.

Adds a token for Shamrock, the Doctor's dog, and expansion rules.

In a departure from the Doctor's first two incarnations, Pertwee played the character as an active crusader with a penchant for action and fancy clothes, even while the character was exiled on Earth and serving with UNIT.

In 2011, he was commissioned to direct and write the libretto for another opera, entitled The Doctor's Tale.

In 1995, Subway Sandwich Shops, Fred DeLuca, Peter Buck, and Doctor's Associates, Inc. were held liable for breach of contract.

The plaintiffs claimed the defendants had misrepresented the asset value of Subway Sandwich Shops ( a leasing company used by Doctor's Associates for franchising purposes ) while negotiating a 1985 lease agreement.

* The Doctor's doctor, a very useful web site for patients and pathologists

" One of the first sketches he wrote was called " Doctor's Waiting Room ", with the main part written for Corbett.

After that, he sets off to reunite with the Daleks, hoping to get his final revenge on the Doctor, in Lucie Miller / To the Death, only for his plans to backfire when the Daleks betray him, resulting in the deaths of Tamsin, Lucy, and the Doctor's great-grandson Alex, although the Monk saves the Doctor and Susan to make up for his role in the Dalek attack.

A UNIT officer states that the Doctor's death must have been too quick to allow for regeneration.