61,048 Pages


Orthopositronium was a form of positronium, an atom-like system consisting of an electron and a positron. As the electron and positron were oppositely charged, the particle behaved like a hydrogen atom; however, the positron had a much smaller mass than the proton it replaced. As the electron and positron were anti-particles of each other, any form of positronium was very unstable and its lifespan was measured in nanoseconds.

Orthopositronium was used to coat the mirrors of Mariah Learman's time machine. (AUDIO: The Time of the Daleks)

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.