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Though she was too shy to ever publish her own results or give any talks, Schattschneider convinced Rice & her husband to attend her talk about Rice’s work at a meeting of the Mathematical Association of America in 1995. When she was pointed out in the audience, she received a standing ovation! The Association installed ceramic tiles with 1 of her tilings in the foyer of their headquarters of 1999.
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By the following December she found her 4th convex pentagonal tiler & 103 “2-block transitive” pentagon tilings. Through the next decade she continued to find more pentagonal tiling patterns & explored aperiodic tilings & she used her discoveries to make tessellation patterns of flowers, shells, butterflies & bees overlain on the geometric shapes (like on her shirt here).
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She succeeded by February, 1976, & wrote Gardner of her new pentagon type & its variations in shape with which she could tile the plane. She had developed her own notation system to describe shapes. He forwarded Rice’s letter to mathematician & tiling pattern expert Doris Schattschneider. Though she was skeptical of Rice’s odd & unique notation system, which she likened to “hieroglyphics” she was able to validate her results. Rice did not stop there. 🧵3/
rushing to devour the magazine before her son (who had the subscription). He reported in July, 1975, that Kershner had finally found all the remaining convex polygons which could make #tessellations to tile the plane. The next month, a reader, Richard James III found a new convex pentagon tiler. Rice was inspired to start her own search.
She spent her spare time discretely drawing diagrams on the kitchen table which she hid when her husband, kids or friends stopped by. 🧵2/
Happy birthday to Marjorie Rice (née Jeuck, 1923–2017) who discovered 4 new pentagonal tilings of the Euclidian plane!
The San Diego mother of 5 (6th died in infancy) completed half a correspondence art course after high school & had no training as a #mathematician but was always interested in #math & art. She began to follow SciAm writer/amateur mathematician Martin Gardner’s column, … 🧵
before moving with her husband Vincent Clark to their East Hampton summer home & then to Sarasota, Florida. In 1999, the National Technical Association recognized Daly as one of the top 50 women in STEM. She was devoted to playing the flute, gardening & her dogs; when her cancer made flute playing difficult, she learned the guitar. She died in 2003, at the age of 82, in New York City.
https://minouette.etsy.com/listing/978691118
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She was a Fellow of the American Association for the Advancement of Science.
After retirement in 1986, she donated money to Queens College to create scolarships for Black students in physics & chemistry, in honour of her father. She served on the Commision for Science & Technology for New York City for three years, 🧵4/5
Later she made studies of the uptake of creatine by muscle cells, which is important to understanding the recycling systems of muscles.
She was also a cancer scientist with the Health Research Council of New York from 1962 - 1972. She served on the board of governors of the New York Academy of Science. She was also active in student recruitment and in professional societies & the NAACP & National Association of Negro Business and Professional Women. 🧵3/
present in appreciable amounts” in DNA -research which was cited when Watson and Crick accepted the Nobel Prize for the structure of DNA. She did some of the earliest work on the relationship between diet & cardiovascular health. She was the first to show how cholesterol could clog arteries & that hypertension lead to atherosclerosis; these were invaluable discoveries in our understanding of heart attacks & work to lower the risk. She also did early work linking smoking & hypertension. 🧵2/
#BlackHistoryMonth is a great time to celebrate #biochemist Marie Maynard Daly (1921-2003), 1st Black woman to earn a PhD in #chemistry in the US! She made important research contributions to our understanding of the biochemisty of the cell nucleus & cardiovascular issues & the chemistry of histones & protein synthesis. She established that “no bases other than adenine, guanine, thymine, and cytosine were 🧵
#womenInSTEM #BlackInSTEM #histsci #printmaking #linocut #histmed #mastoArt