Starch pictures have long been widely used for teaching and research.
The degree of resolution that can be obtained has posed a question that
has remained unanswered for several decades. Recently I asked Jerry
Servaities and Don Geiger to offer their thoughts on this matter in the
light of their research and contemporary understanding. I have now taken
the liberty of adding their explanation to a PowerPoint presentation on
this subject that, in accord with the concept of open access, is now
available, courtesy of Oxygraphics, for free
download (3.4 MB) from
More details about how to obtain pictures of very high resolution are
also available (in an extract from Energy, Plants & Man, ISBN 1 870232
05 4) at
From David Walker, FRS., Emeritus Professor of Photosynthesis,
University of Sheffield, UK.