September 2015
Beginner to intermediate
676 pages
25h 29m
English
Chapter 20
The shop seemed to be full of all manner of curious things—but the oddest part of it all was that, wherever she looked hard at any shelf, to make out exactly what it had on it, that particular shelf was always quite empty, though the others round it were crowded as full as they could hold.
Lewis Carroll
Through the Looking-Glass
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 shadow-free room lighting, you need a focusing pocket torch and an appropriate line of patter as well, because the next two questions ...