On This Day: December 23

4 verified moments happened on December 23. Here they are in the order they actually happened — the same kind of puzzle you solve in Whensly every day.

1. 1947🔬 Bell Labs scientists demonstrate the first working transistor, the tiny amplifier that replaces vacuum tubes.Technology · Source: We Are Broadcasters, 'Bell Labs Demonstrates the First Transistor' (Dec 23 1947)
2. 1954🫘 Joseph Murray performs the first successful organ transplant, moving a kidney between identical twins.History · Source: Guinness World Records; Harvard Countway (Dec 23 1954)
3. 1972 Franco Harris's shoestring 'Immaculate Reception' touchdown gives the Steelers a stunning last-second playoff win over the RaidersSports · Source: Pro Football Hall of Fame: The Immaculate Reception; Wikipedia (Dec 23, 1972)
4. 1972 Franco Harris scoops up a deflection for the Immaculate Reception to beat the RaidersPro Football · Source: Wikipedia Immaculate Reception; Heinz History Center (Dec 23 1972); HISTORY this-day-in-history Dec 23 1972