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1 Results for "《 예약문의 OIO↗8489↗8306》가라오케┦가라오케world선릉가라오케가라오케사이즈청담가라오케promotion 선릉가라오케┫ ∫선릉가라오케decided"
Standing waves of sound
Project
by
Andrew Ferguson
An ultrasonic interferometer is assembled from optical drive components, 3d-printed parts and an ultrasonic range-finder.
748
36