The second instalment of our 2023 CHRISTMAS LECTURES , supported by CGI, is tonight 🙌 Join Mike Wooldridge as he explores the ways in which we already encounter AI in our daily lives. 📺 Watch on BBC Four & iPlayer from 8pm. | Royal Institution of Great Britain

This science demonstration is over 200 years old, but we think it's still mind-blowing today 🤯 Humphry Davy first isolated the chemical element potassium right here at the Royal Institution, using electrolysis. The great natural philosopher was born #OnThisDay in 1778. | Royal Institution of Great Britain

Why do Jubilee line trains on the London Underground make that distinctive sound? 🚇 We couldn't resist looking into the science of our local Tube line. | Royal Institution of Great Britain

Sound needs a medium to travel — in this case, air. 🔊 Physicist Charles Taylor beautifully demonstrated this during his 1989 Christmas Lectures on the science of music. Watch the full series here: rigb.org/explore-science/explore/video/exploring-music-what-music-1989 This year, we're celebrating the 200th anniversary of the Christmas Lectures. Stay tuned as we dive into our archives to share the best bits! #Discover200 | Royal Institution of Great Britain