Back in 2022, I blogged about physicists depicted on US currency and coinage; at the time I could only identify two (Ben Franklin and Dr. Sally Ride). Further I stated that I knew of no other scientists, engineers, or mathematicians so depicted, unless we count the polymathic Thomas Jefferson.
I am pleased to see that this year (2025), the American Women Quarters series has added a quarter for Dr. Vera Rubin, a central figure in the discovery of the "dark matter" problem. This now makes a total of 3 physicists, one male on currency, and two female on coinage. It is noted that Dr. Ride is the first known LGBT+ person, and Dr. Rubin the first Jewish person, depicted on US money.
Regarding engineers, I should have mentioned in my earlier post that President Herbert Hoover ($1 coin issued in 2014) was a mining engineer. President Jimmy Carter was also an engineer by training (nuclear engineer in the Navy), but no coin for him has yet been issued. He is presently the only deceased president for whom a $1 coin has not yet been issued).
Am I missing any others?
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