A 60-beam ultraviolet laser flash-vaporized the surface of tiny diamonds so the blast would kick a shock wave through them, melting the hardest material on Earth at 12,680 degrees and 145 million psi, and solid diamond turned out to float on its own melt like ice on water
KeysQuestions4Explore4 For two decades, physicists couldn’t agree on something as fundamental as when diamond melts — and the…