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In 1828, a Dutch chemist found a way to make powdered chocolate by removing about half the natural fat (cacao butter) from chocolate liquor, pulverizing what remained and treating the mixture with alkaline salts to cut the bitter taste. His product became known as “Dutch cocoa,” and it so...
One final idea that was used by Dalton to establish his atomic theory was developed by the French chemist Joseph Proust and is known as the law of definite proportions. Proust demonstrated that chemical compounds always contain the same proportion of elements by mass, implying that elements combine...
The importance of thus reversing the proof was strikingly manifested when by keeping a phial of water charged with siliceous particles undisturbed for years, a chemist (I believe Dr. Wollaston) succeeded in obtaining crystals of quartz; and in the equally interesting experiment in which Sir James ...
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at the time one of the leading chemistry and physics labs in the world. She was hired, and put to work cataloging and preparing samples of the element actinium. This element had been discovered thirty years before by a chemist who had also been working in the Curie laboratory, but this wa...
Over time, European chemists discovered that another form of pearlash was effective in helping the baking process. In 1791 a French Chemist Nicolas LeBlank turned common salt (sodium chloride) into soda ash (sodium carbonate). This was later developed into sodium bicarbonate in the USA. Bicarb...
Image-based profiling is a maturing strategy by which the rich information present in biological images is reduced to a multidimensional profile, a collection of extracted image-based features. These profiles can be mined for relevant patterns, revealing
Who’s your favorite scientist of all time? My father-in-law, Arthur Taggi. He is also a chemist and was one of the inventors of the holographic technology that is used in passports and other forms of government identification. And he’s a great guy!
That’s what happened to Kaitlin Morrison, a freelance writer, and her husband Jeff Greenlund, a chemist based in Washington State. “We went the whole first year of his new job without talking about taxes, and when I began preparing our taxes, I was in for a surprise. We didn’t...