"This is for the secretary, " she told the clerk, Celeste Payot, as she handed over the box, which was neatly wrapped in a yellow plastic bag and tied with a steel wire.

CNN: CASH GOING BEGGING

Looking at the ease with which we now capture colour pictures and transmit them around the world in seconds it's easy to forget that it was not that long ago news agencies were transmitting their wire photographs as colour separations, usually cyan, magenta and yellow - a process that relied on Clerk Maxwell's discovery.

BBC: Pioneering colour photography