The Levitated Inferno: A Microscopic Glass Sphere Reaches 13 Million Degrees
In the quiet, dust-free expanse of a high-vacuum chamber at King’s College London, a speck of glass invisible to the naked eye has just achieved the impossible. It has not melted, nor has it vaporized. It remains a solid, perfect sphere of silica, just five micrometers wide. Yet, according to the la ...