saponification

Accomplished French chemist and professional skeptic whose research and work had a immense influence in several disciplines of science, mathematics and the arts as well as helping to establish the field of gerontology with himself a subject of study, Michel Eugène Chevreul (*1786) passed away on this day in 1889 in Paris, aged 102. Revolutionary work with vegetable oils and animal fats fundamentally changed the manufacture and availability of soap and candles—incidentally leading to an understanding of the pathology and treatment of diabetes. Having first honed his acumen as chemist in a dye and pigment manufacturing plant, Chevreul expounded several volumes regarding the theory of colours and their compliments which particularly informed Impressionist and Pointillist styles, after his career with oleic experimentation, he set his focus on disenchanting, disabusing the public of popular charlatanism and mysticism and raging against seances and table-turning, giving one of the first explanations of the ideomotor effect for mediums and dowsers. Having lived through the French Revolution, Chevreul was one of the seventy-two scientists and engineers commemorated on the first balcony of the Eiffel Tower and was only one of two honorees alive to see the Tricolour raised at the top of the structure.