Observationes Medicae (Tulp) Observationes Medicae (Tulp) Observationes Medicae is a 1641 book by Nicolaes Tulp. Tulp is primarily famous today for his central role in the 1632 by Rembrandt of the Amsterdam Guild of Surgeons, which commemorates his appointment as praelector in 1628. "Observationes Medicae" is also the title commonly used by early Dutch doctors in the 16th and 17th centuries who wrote up their cases from private practise in Latin to share with contemporary colleagues. Though already well known at the time his book was written, Professor Tulp enjoyed international fame after publishing this book, and in 1652 a second edition was
The Doctor (Doctor Who) to hear it, at a certain frequency. If the stars are in the right place, and your heart’s in the right place, you’ll hear it." On occasion, the Doctor uses other aliases, such as "John Smith". In the Fourth Doctor serial "The Armageddon Factor", the Doctor runs into a former classmate of his named Drax. Drax calls the Doctor Theta Sigma or "Thete" for short, an alias which is clarified as the Doctor's nickname at the Prydon Academy on Gallifrey in "The Happiness Patrol" and referred to again in the 2010 episode "The Pandorica Opens". "Doctor Who" spin-off media have