Tribophysics
From Tardis Wiki, the free Doctor Who reference
Tribophysics was the science of interacting surfaces in relative motion. This science was dated back to the Time of Legend on Gallifrey. (PROSE: Damaged Goods)
When Sarah Jane Smith and the Fourth Doctor were in a pyramid on Mars, the Doctor revealed and opened a door using a hand gesture. Sarah said, "Tribophysics!" The Doctor replied, "Yes." (TV: Pyramids of Mars)
Blon Fel-Fotch Passameer-Day Slitheen planned to use a tribophysical waveform macro-kinetic extrapolator as a pan-dimensional surfboard to escape her planned destruction of the Earth. The Ninth Doctor and Jack Harkness added this device to the Doctor's TARDIS. (TV: Boom Town)
