Today was the third running of the (somewhat) annual event "Pizza+Posters+Staff+Students". I had managed to get 12 members of staff to produce posters and present their work. The Head of the Department bought pizzas and we had a great turnout...
Here I wish to play a bit with the "Twin Paradox" of Special Relativity. [*note, it ain't a paradox]. For this you'll need to be happy with (1) time-dilation, (2) length-contraction, (3) Lorentz velocity transforms and (4) straight lines. I...