Doctor Who (2013 specials) of the Doctor" and "The Time of the Doctor", as composed by Murray Gold, were released on 24 November 2014 by Silva Screen Records. Doctor Who (2013 specials) The 2013 specials of the British science fiction television programme "Doctor Who" are two additional episodes following the programme's seventh series. In addition to the traditional Christmas episode, which has been a feature of the revived series since 2005, there was also a special celebrating the 50th anniversary of the programme. Both episodes starred Matt Smith as the Eleventh Doctor and Jenna Coleman as Clara Oswald. The 50th anniversary special, "The Day
All-or-none law All-or-none law The all-or-none law is the principle that the strength by which a nerve or muscle fibre responds to a stimulus is independent of the strength of the stimulus. If that stimulus exceeds the threshold potential, the nerve or muscle fibre will give a complete response; otherwise, there is no response. It was first established by the American physiologist Henry Pickering Bowditch in 1871 for the contraction of heart muscle. According to him, describing the relation of response to stimulus,““An induction shock produces a contraction or fails to do so according to its strength; if it does so at