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Adventures in Natural Frequency. Gravity Chimes and Boom Whackers. What can students learn from these?. Natural Frequency Depends on size and elastic properties of the object Concept Connections Frequency, pitch, wavelength. Demos and Examples Natural Frequency. Nails Bells
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Adventures in Natural Frequency Gravity Chimes and Boom Whackers By Dan Bruton and Walter Trikosko
What can students learn from these? • Natural Frequency • Depends on size and elastic properties of the object • Concept Connections • Frequency, pitch, wavelength By Dan Bruton and Walter Trikosko
Demos and ExamplesNatural Frequency • Nails • Bells • Tuning Forks • Swing • Pendulum • Musical Instruments • Cephied Variable Stars • Singing Rod • Music Tree • Wine Glass • Organ Pipe • Open and Closed • Frog and Cricket By Dan Bruton and Walter Trikosko
TREE HOLE FROG ofBORNEOhttp://www.biol.lu.se/zooekologi/epb/people-en/bl-en/bl-meta-en/bl-meta-en.htm By Dan Bruton and Walter Trikosko
Boom WhackersConstruction • Locate color paper and label each with a note • Obtain a long and short fluorescent lamp guard • Cut each to the lengths provided • in the table B A C G D F E By Dan Bruton and Walter Trikosko
THREE TUNES By Dan Bruton and Walter Trikosko
Notes with hats correspond to a tube with a cap on the end. By Dan Bruton and Walter Trikosko
Gravity ChimesConstruction • Cut aluminum rods to the correct length • Paint each length a different color • Sort the rods according to the order provided • Method 1: Line rods up on the edge of a table and flip them off onto the floor. • Method 2: Hand out the rods to the students in your class and let them drop them in order. By Dan Bruton and Walter Trikosko