The timing techniques described above are intended to be as simple as possible. The point is that quantitative high-speed work can be done without a large investment in equipment. These techniques were used at the turn of the century before the advent of modern high-speed equipment. We refer you, in particular, to the classic book, A Study of Splashes by A.M. Worthington.

More accurate methods are possible without adding a fortune to the equipment budget. An old Apple II+ computer provides an excellent controller for 1 to 16 flash units. This method is described here (requires Adobe Acrobat Reader).

A similar method can be used with IBM-compatible computers. Complete details are provided on the web site of Ian Price and Robert Smith.