JCE 2002 (79) 1214 [Oct] The World's First "Pastarimeter": An Analogous Demonstration of Polarimetry Using <i>Pasta Fusilli</i>


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Home > JCE Print > Journal of Chemical Education > Issues > 2002 > October >

Chemistry for Everyone

Applications and Analogies

The World's First "Pastarimeter": An Analogous Demonstration of Polarimetry Using Pasta Fusilli

Claire Saxon, Scott Brindley, Nic Jervis, Graeme R. Jones, E. David Morgan, and Christopher A. Ramsden
School of Chemistry & Physics, Lennard-Jones Laboratories, Keele University, Staffordshire, UK

October 2002
Vol. 79 No. 10
p. 1214

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Abstract

Chirality, molecular left- and right-handedness, is an appealing topic for chemists to introduce to the general public. Here we describe the invention of the Pastarimeter, a novel instrument that is capable of distinguishing between left-handed and right-handed twisted pasta fusilli. When water is poured down a tube containing the pasta the right-handed fusilli rotates the water clockwise and the left-handed fusilli rotates it counterclockwise. This is analogous to the way in which polarized light is rotated by left- and right-handed molecules in a polarimeter.

More Information
Citation	Saxon, Claire; Brindley, Scott; Jervis, Nic; Jones, Graeme R.; Morgan, E. David; Ramsden, Christopher A. J. Chem. Educ. 2002 79 1214.
Keywords	Chirality / Optical Isomers; Demonstrations; Outreach; Public Understanding; Stereochemistry
History	Created: Last Updated:	August 29, 2002 March 16, 2005


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