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	Chladni Patterns on a Square Plate Posted by: drdanku Video duration: 95 seconds When sand is sprinkled on a vibrating square plate and the plate is excited at one of its resonance frequencies, the sand collects at the "nodes" and forms pretty symmetric patterns Related: chladni, sound, standing, vibration, waves

	Praying Mantis eating Cricket Posted by: drdanku Video duration: 337 seconds My kids found a praying mantis in our back yard, and are keeping it as a pet. We catch crickets and put them in the container with the mantis, and enjoy watching it catch and eat its meals. Related: cricket, insect, mantis, praying

	wineglass vibrations Posted by: drdanku Video duration: 27 seconds slow-motion (using a strobelight) vibration of a wineglass vibrating in response to a loud sound wave from a speaker, and pitched to the natural frequency of the glass. Two different size glasses are shown. Related: acoustics, physics, science, sound, vibration, wineglass

	Tuning Fork Vibrations Posted by: drdanku Video duration: 7 seconds "slow-motion" vibration of the tines of a 125Hz tuning fork captured with a strobe light Related: physics, science, sound, strobe, vibration

	Flying Finnegan Game Posted by: drdanku Video duration: 29 seconds While visiting Grandma, our kids found an old game in the basement (somewhat similar to Mousetrap) that involves a kind of Rube Goldberg game in which the attempt is to get Finnegan to fly into an open shark tank and ring the bell. Related: game, goldberg, mousetrap, rube

Physics Club Wins 2008 Kettering University Soap Box Derby Posted by: drdanku Video duration: 42 seconds Physics Club car wins the final race in the Free-Style class of the 2008 Kettering University Soap Box Derby Challenge. They had a pretty fast car, but more importantly they always got to the bottom of the track while other teams had a tendency to crash. Next year they'll add a body to the car to cut down on air-drag. Related: 2008, box, crash, derby, kettering, soap, university

	modes of vibration for 3-dof Posted by: drdanku Video duration: 20 seconds a system of three masses and springs (whiffle golf balls connected by rubber bands) exhibits three distinct modes of vibration, each with its own natural frequency. (flickering is due to aliasing between strobe light and camera frame rate) Related: physics, science, sound, strobe, vibration

	flexible handled baseball bats Posted by: drdanku Video duration: 19 seconds just comparing how easy it is to bend some of the "flexible" handled baseball bats currently available. Related: baseball, bat, flexible, physics, science