Figure 2 (IMAGE) American Physical Society Caption The flexibility of the gravity crystal concept allows exploration of the same physics that governs oxygen-carbon stratification within cool white dwarf stars. This can be observed by mixing different mass spheres (copper and aluminum) in "Alina's bowl," a shallow stainless-steel kitchen mixing bowl. Once voltage is applied, the heavier copper balls "sink" to the bowl center and separate from the lighter aluminum balls. Credit Alexander Bataller Usage Restrictions Alexander Bataller License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.