"I have always wondered if you couldn’t relatively easily use some other physical property to non destructively distinguish gold and tungsten. The speed of sound in gold is about 3240 m/s, in tungsten 5200."
101 posted on 07/01/2020 3:56:00 AM PDT by Lonesome in Massachussets
("Women's intuition" gave us the Salem witch trials and Kavanaugh hearings. Change my mind.)