Off-topic, but an inventor of the Pulse Oximeter recently passed away [1]: "Takuo Aoyagi, a Japanese engineer whose pioneering work in the 1970s led to the mod

Off-topic, but an inventor of the Pulse Oximeter recently passed away [1]: "Takuo Aoyagi, a Japanese engineer whose pioneering work in the 1970s led to the modern pulse oximeter, a lifesaving device that clips on a finger and shows the level of oxygen in the blood and that has become a critical tool in the fight against the novel coronavirus, died on April 18 in Tokyo. He was 84." [1] https://www.nytimes.com/2020/05/01/science/takuo-aoyagi-an-inventor-of-the-pulse-oximeter-dies-at-84.html https://www.nytimes.com/2020/05/01/science/takuo-aoyagi-an-i...