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Schlieren video of ultrasonic pulse (pt1)

transmission of a 10-cycle 7.5 MHz ultrasonic pulse through water. Imaged with stroboscopic LED-illumination and the Schlieren technique. Kalle Hanhijärvi & Anders Wallin, University of Helsinki, Finland. 2008. Duration : 0:0:3

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Schlieren video of ultrasonic pulse (pt2)

transmission and reflection of a 10-cycle 7.5 MHz ultrasonic pulse through water. Imaged with stroboscopic LED-illumination and the Schlieren technique. Kalle Hanhijärvi & Anders Wallin, University of Helsinki, Finland. 2008. Duration : 0:0:5