On this day (9th January) in 1868, Danish chemist Søren Sørensen was born. He’s best known for developing the pH scale, which we’ve likely all encountered, to measure the acidity or alkalinity of solutions. This graphic gives a brief overview of the pH scale and what it means.
Today marks the anniversary of the birth of August Kekulé, most famous for his proposed structure for the benzene molecule. This graphic looks at his structure and its limitations and shows how later work improved upon his initial proposal.
8 March is International Women’s Day. As in previous years, I’ve put together another edition of this series looking at underappreciated women from chemistry history.
Dorothy Hodgkin was born on this day in 1910. She’s famed as one of only four women to have won a Nobel Prize in Chemistry, and the only British woman to have done so. This graphic takes a look at the work that earned her the prize.
8 March is International Women’s Day. In the past few years, Ci has featured graphics on women in chemistry to mark this occasion; first, this one on women in chemistry history, and last year this one on women in chemistry present. This year, here’s another edition, looking at twelve more underappreciated women from chemistry history.
As it’s the International Year of the Periodic Table, I decided to revisit this old timeline of element discoveries I put together five years ago. The old version was a little in need of visual improvement, as well as updating to include the element discoveries confirmed since 2014.