Raised menisci around small discs positioned to pull up a water-air interface provide a well controllable experimental setup capable of reproducing much of the rich phenomenology of gravitational lensing (or microlensing events) by $n$-body clusters. Results are shown for single, binary and triple mass lenses. The scheme represents a versatile testbench for the (astro)physics of general relativity's gravitational lens effects, including high multiplicity imaging of extended sources.

中文翻译：

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光学n体引力透镜类比

围绕小圆盘的凸起半月板定位以拉起水-空气界面，提供了一个可控的实验装置，能够通过 $n$-body cluster 再现引力透镜（或微透镜事件）的许多丰富现象。结果显示为单个、二元和三重透镜。该方案代表了广义相对论引力透镜效应的（天体）物理学的通用测试平台，包括扩展源的高多重成像。