...in which we learn how polarized light helped Louis Pasteur to determine that internal three-dimensional structure of molecules was real based on &quot;optical isomers.&quot; We then move to the 1870s, and see how van &apos;t Hoff and Le Bel independently came up with the idea of tetrahedral carbon to explain optical isomers. Once the idea of an actual 3D structure for molecules was accepted, a variety of chemists used this idea to explain all sorts of molecular structures. Supporters of this podcast at <a href='https://www.patreon.com/thehistoryofchemistry'>https://www.patreon.com/thehistoryofchemistry</a> can download a supplementary sheet with some diagrams.<a rel="payment" href="https://www.patreon.com/thehistoryofchemistry">Support the Show.</a><ul> <li>Support my podcast at <a href='https://www.patreon.com/thehistoryofchemistry'>https://www.patreon.com/thehistoryofchemistry</a> </li> <li>Tell me how your life relates to chemistry! E-mail me at steve@historyofchem.com</li> <li>Get my book, O Mg! How Chemistry Came to Be, from World Scientific Publishing, <a href='https://www.worldscientific.com/worldscibooks/10.1142/12670#t=aboutBook'>https://www.worldscientific.com/worldscibooks/10.1142/12670#t=aboutBook</a> </li> </ul>

20: The Element of Surprise

Chemistry is everywhere, and involves everything. But how did chemistry get to be what it is? I'm Steve Cohen, a chemist and writer, bringing you The History of Chemistry. This podcast explores the development of chemistry from prehistoric times to the present, including the people and societies who made chemistry what it is today. The History of Chemistry is for you, whether you hated chemistry in high school, or got a PhD in inorganic chemistry. We'll explore how chemistry affected art, music, language, politics and vice-versa. Whether it's ancient Greek philosophers, medieval alchemists, or modern laboratory apparatus, it's all here. Don't forget to support my series at https://www.patreon.com/thehistoryofchemistry !