Her father, Carl A. Rouse, was the first African American to earn a doctorate in physics from the California Institute of Technology, and only the fifth to earn the degree from any American university.
Stanford mathematician Tadashi Tokieda explains the curious higher and lower notes you hear from tapping a coffee mug. From a good interview in Quanta:
I’m trying to jolt myself out of my complacency. When I share, I just want to share with people. I hope that they’ll like it, but I’m not trying to educate them, and I don’t think people are complacent. People are struggling in their own ways and making efforts and trying to improve. Who am I to jolt them out of complacency? But I like to be surprised, and I like to be proved wrong. Not in public, because that’s humiliating. But in private, I really like to be proved wrong, because that means that afterward, if I come to terms with it when the dust settles, I am ever so slightly smarter than before, and I feel better that way.