Introduction to `Would you like to see a ...’ gallery

This embryonic gallery of bubble chamber pictures is accompanied by printable coloured highlights of tracks of interest as well as detailed descriptions. There are currently two sections of `Would you like to see …?:

• a named particle such as an electron or an omega (Particles)
• an example of an important principle, law or phenomenon; eg. E = mc2 charge conservation, or positron annihilation in flight. (Concepts)

Sometimes there may be more than one example; in which case, the first example usually has the fullest description.