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Ganci, Salvatore – Physics Education, 2009
A simple low cost demonstration experiment is performed using common apparatus in order to show various flexural patterns and to give a dynamical measure of Young's modulus. (Contains 4 figures.)
Descriptors: Demonstrations (Educational), Experiments, Visual Perception, Equations (Mathematics)
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Klopfer, Dale; Doherty, Michael E. – Teaching of Psychology, 1992
Describes a perceptual illusion, the Janus mask, for use in introductory psychology demonstrations. Suggests using a motor or videotaped image to rotate the mask, giving the impression that the mask is following a moving observer or oscillating. Recommends the illusion to show that perception is usefully conceptualized as hypothesis testing. (DK)
Descriptors: Demonstrations (Educational), Experiments, Higher Education, Introductory Courses