I'm really pleased that today we've posted the 100th episode of Objectivity - and it's a special object indeed.
You may have seen in the news last week that a first edition of Issac Newton's Principia Mathematica sold for £3.7 million.
Well in our latest video have another first edition (a better one in my opinion, because of who owned it).
But we also have THE ORIGINAL MANUSCRIPT - handwritten with notes and used by the printers.
On the same day we posted episode 100, the channel also reached the milestone of 100,000 subscribers.
Thanks to everyone who subscribes, and if you do not subscribe then here is a link!
Several people have helped make Objectivity a success (and great fun).
I'd especially like to thank the Royal Society Library Team, most notably cult hero Keith Moore and Rupert Baker.
Also at the Royal Society, Tracey Hughes, Lesley Miles and Julie Maxton.
The very cool and curious Jake Chudnow at YouTube/Google who got things happening at the start.
And last but definitely not least, James Hennessy who films and edits the videos. He does an amazing job.
PS: Thanks to these guest stars too (click their names to see them on Objectivity)
Sir Paul Nurse, Michael Stevens (Vsauce), Anson at Nasa, J Willgoose Esquire (Public Service Broadcasting), Lucie Green, Charlie McDonnell, Festival of the Spoken Nerd, Steve Mould, Helen Arney, Matt Parker, Destin Sandlin (Smarter Every Day), Don Pettit (astronaut), Hannah Fry, Mike Merrifield, and Sir Martyn Poliakoff.