Isaac Newton, Charles Darwin, Benjamin Franklin, The Queen and the man who invented the Internet... How much do you think this collection of signatures is worth? The Royal Society Charter Book must surely be the world's most impressive autograph collection? With thanks to the Royal Society, especially Keith Moore and Joanna McManus. Also featuring Professor Martyn Poliakoff and music by Alan Stewart. Mendeleev's business card: http://youtu.be/GuCR_Webyi8 CORRECTION: The Japanese Emperor who signed the book was Hirohito, not Akihito (Hirohito was a marine biologist - his son and successor Akihito is an ichthyological researcher) More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/ A run-down of Brady's channels: http://bit.ly/bradychannels