ABSTRACT
Most holographers carry a small hologram around with them all the time. They don’t want to be caught out by someone asking them: ‘What is a hologram? What does a hologram look like?’
Of course, merely carrying a hologram isn’t enough. In these days of universal shadowless lighting you need a pocket torch too, and an appropriate line of patter as well, because the next two questions will inevitably be ‘How do they work?’ and ‘How do you make them?’
