Muino has used single-slit diffraction to provide an introduction to the uncertainty principle suitable for an undergraduate physical chemistry course (1).His article provided both a theoretical analysis of single-slit diffraction and a lecture demonstration of the phenomenon using readily-available equipment.In the current research literature Nairz and colleagues have confirmed the uncertainty principle in a single-slit diffraction experiment with a beam of C_(70) molecules (2).And,quite recently,a research team led by Marcus Arndt and Anton Zeilinger performed multi-slit experiments demonstrating wave-particle behavior for tetraphenylporphyrin and a fluorinated fullerene,C_(60)F_(48) (3).The significance of these results is that tetraphenylporphyrin is an important biomolecule and C_(60)F_(48) is the most massive particle to demonstrate wavelike properties to date.
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