There's been a major gap in this blog because I'm in the midst of writing a book for O'Reilly. As part of the research on the book I came across the ultimate nerd honeymoon.
In 1812, Sir Humphry Davy, the British chemist and inventor who is best remembered today for Davy Lamp used in mines, married.
In October 1813 Davy and his wife set off on a honeymoon across Europe. First stop was Paris to pick up a medal from Napoleon. But Davy needed a valet to help out, so he took Michael Faraday with him. That way Davy and Faraday could perform experiments along the way.
While in Paris they got together with Joseph Louis Gay-Lussac (of Gay-Lussac's Law) and showed that iodine was an element. And André-Marie Ampère stopped by for a chat.
Off they went to Italy to hang out with Alessandro Volta and also did an experiment setting fire to a diamond using the sun's rays and demonstrated that a diamond is made of carbon.
The honeymoon lasted 18 months.