On this day in history — October 20, 1903: Inventor Elmer Gates patented an educational shape-sorting toy with geometric blocks and matching openings. Credit: U.S. Patent 741,903. #STEMWire (https://t.co/WG4CEZjtTz) 🛰️
On this day in history — October 19, 1941: Palmer C. Putnam’s team synchronized the first megawatt wind turbine with a commercial power grid. Credit: NASA. https://t.co/55aQsK8dE9 #STEMWire (https://t.co/WG4CEZjtTz) 🛰️
On this day in history — October 18, 1954: Regency and Texas Instruments introduced the TR-1, the first commercial transistor radio, launching portable consumer electronics. Credit: Smithsonian Institution. #STEMWire (https://t.co/WG4CEZjtTz) 🛰️
On this day in history — October 17, 1855: Inventor and metallurgist Henry Bessemer patented an early steelmaking process that forced air through molten metal. Credit: Smithsonian Institution. #STEMWire (https://t.co/WG4CEZjtTz) 🛰️