Template:Selected anniversaries/June 2
1743: Occultist and explorer Alessandro Cagliostro born. He will become a glamorous figure associated with the royal courts of Europe where he will pursue psychic healing, alchemy, and scrying.
1881: Engineer and radio pioneer Henry Joseph Round born. Round will be an assistant of Guglielmo Marconi, and make contributions of his own to radio technology, for example the first reported observation of electroluminescence from a solid state diode.
1896: Guglielmo Marconi applies for a patent for his wireless telegraph.
1923: Mathematician and economist Lloyd Shapley born. He will define game theory as "a mathematical study of conflict and cooperation."
2014: Pharmacologist and chemist Alexander Shulgin dies. He discovered, synthesized, and personal bioassayed over 230 psychoactive compounds for their psychedelic and entactogenic potential.