1869, John Wesley Hyatt and Isaiah Hyatt received a U.S. patent for pyroxylin plastic, which they called “Improved Method of Making Solid Collodion” (No. 91,341). The process was slightly flammable, but was essential to the development of plastics.

In 1878 – Photographer Eadweard Muybridge used high-speed photography to capture a horse’s motion. The photos showed the horse with all four feet in the air during some parts of its stride. Stop-motion photography was born.
5/

In 1949 – Jay Forrester wrote down a proposal for core memory in his notebook. Core memory was the standard for computer memory until advances in semiconductors in the 1970s.

1822 – Charles Babbage announced his difference engine in a paper to the Royal Astronomical Society entitled “Note on the application of machinery to the computation of astronomical and mathematical tables”.

1941 – John Mauchly visited John Atanasoff in Iowa City to see his computer. The two computer pioneers later battled in court over who was the legal inventor of the electronic digital computer.

In 1951 – The U.S. Census Bureau officially put UNIVAC I into service calling it the world’s first commercial computer.

In 1925 – Charles Jenkins publicly demonstrated synchronized transmission of silhouette pictures and sound, becoming the first person to demonstrate TV in the US.

In 1944 – Germany launched the first guided missile attack in history, sending V-1 rockets into London.

In 1983 – Pioneer 10 became the first human-made object to pass outside Pluto’s orbit and leave the central solar system.