“The Big European Bubble Chamber” - an old disused piece of equipment that was used by CERN to detect particles who would leave trails in the liquid hydrogen contained within.
In quantum field theory, penguin diagrams are a class of Feynman diagrams which are important for understanding CP violating processes in the standard model.
[Feynman diagrams illustrate particle/energy exchanges on a quantum level. “CP violating processes” are quantum exchanges that appear to violate the traditional laws of physics. Quantum theory has done this quite a bit over the years].
http://en.wikipedia.org/wiki/Penguin_diagram