What is it about?
Focusing sound waves on a spot whose size is much shorter than half of a wavelength has been recently made possible. We explain here how to reproduce, at an elementary level, this experiment that illustrates fundamental properties of waves.
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Why is it important?
It was a great pleasure to work with physicists at the forefront of research and to make it accessible to students.
Perspectives
I hope to continue to build bridges between the world of research and the classroom.
M. Mohamed EL ABED
ESIEE Paris
Read the Original
This page is a summary of: Subwavelength Focalization of Acoustic Waves Using Time Reversal. Yes We Can!, The Physics Teacher, April 2014, American Association of Physics Teachers (AAPT),
DOI: 10.1119/1.4868939.
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