The paper discusses the lecture demonstration of the phenomenon in which a drop lying on a solid unwettable substrate performs a jump when making the transition to weightlessness. An elementary theory of the phenomenon is given. A jump speed estimate is obtained for small and large drops. The natural vibrational frequency of a flying drop is determined. A full-scale model of Einstein's lift is described. Experimental and theoretical results are found to agree satisfactorily.
Keywords: lecture demonstrations, liquid drop, transition to weightlessness, natural oscillations, Einstein's lift PACS:01.50.My, 47.55.D− (all) DOI:10.3367/UFNe.2016.04.037815 URL: https://ufn.ru/en/articles/2017/1/f/ Citation: Mayer V V, Varaksina E I, Saranin V A "A drop jumps to weightlessness: a lecture demo" Phys. Usp.60 108–113 (2017)
%0 Journal Article
%T A drop jumps to weightlessness: a lecture demo
%A V. V. Mayer
%A E. I. Varaksina
%A V. A. Saranin
%J Phys. Usp.
Received: 23rd, April 2016, accepted: 26th, April 2016