Wikipedia picture of the day November 23, 2017: A high purity (99.999 %) rhenium single crystal made by the floating zone process, an ebeam remelted (99.995 %) rhenium bar and as well as a high purity (99.99 % = 4N) 1 cm3 rhenium cube for comparison. https://t.co/q9huw2hskN

Wikipedia picture of the day November 23, 2017: A high purity (99.999 %) rhenium single crystal made by the floating zone process, an ebeam remelted (99.995 %) rhenium bar and as well as a high purity (99.99 % = 4N) 1 cm3 rhenium cube for comparison. https://t.co/q9huw2hskN (http://twitter.com/muhamadiqbaldar/status/933487596231168003)