June 18 - Robert Recorde, his urinal and the equals sign

Yes, you read that title right! 
 
On this day in Tudor history, 18th June 1558, the will of Welsh mathematician, physician and mint administrator Robert Recorde was proved. 
 
Recorde invented the "=" sign and wrote books on mathematics and also a urological treatise "The Urinal of Physick". Let historian Claire Ridgway tell you all about this man and his works, which have such catchy titles!
 
You can see this podcast as a video at the following link:
https://youtu.be/u54dqoddY1M
 
Also on this day in Tudor history, 18th June 1546, twenty-five-year-old Anne Askew was found guilty of heresy at London’s Guildhall along with Nicholas Shaxton (former Bishop of Salisbury), Nicholas White and John Hadlam. Find out more about what led to the trial and execution of this Protestant martyr in last year’s video - https://youtu.be/bmJtFqoJXDc
 
Links to read Robert Recorde's works:
 
The Whetstone of Witte - https://archive.org/details/TheWhetstoneOfWitte

The Grounde of Artes - https://www.maa.org/press/periodicals/convergence/mathematical-treasures-the-grounde-of-artes-by-robert-recorde

The Urinal of Physick - https://books.google.es/books/about/The_urinal_of_physick.html?id=Sax491XagIgC&redir_esc=y 
 
You can find Claire at:
https://www.theanneboleynfiles.com 
https://www.tudorsociety.com
https://www.facebook.com/theanneboleynfiles/
https://www.facebook.com/tudorsociety/
https://twitter.com/AnneBoleynFiles 
https://twitter.com/thetudorsociety 
https://www.instagram.com/tudor.society/ 
https://www.instagram.com/anneboleynfiles/