This Day in TechApril 23, 1827: Shedding a Ray of Light on <nobr>Rays of Light</nobr>By Randy AlfredApril 22, 1970: Tell Your Mother You Love HerBy Tony LongApril 21, 1994: Our Solar System Is Not AloneBy Lisa GrossmanApril 20, 1940: Electron Microscope Crosses the Atlantic; Zworykin Crosses the DelawareBy Randy AlfredApril 17, 1964: Ford Mustang Starts GallopingBy Tony BorrozApril 16, 1947: Ship Explosion Ignites 3-Day Rain of Fire and DeathBy Randy AlfredApril 15, 1726: Apple Doesn't Fall Far <nobr>From Physicist</nobr>By Randy AlfredApril 14, 1945: Tweaky Toilet Costs Skipper His SubBy Tony LongApril 13, 1953: Bond Starts Shaking Things Up, Stirring <nobr>His Fans</nobr>By John Scott LewinskiApril 10, 1815: Tambora Explosion Triggers 'Volcanic Winter'By Randy AlfredApril 9, 1865: War Ends, But the Horror's Just BeginningBy Tony LongApril 8, 1869: What Do You Mean, 'It's Not <nobr>Brain Surgery'?</nobr>By Randy AlfredApril 7, 1933: Gimme a Tall, Cold OneBy Tony LongApril 6, 1938: Teflon, an Invention That SticksBy Tony LongApril 3, 1892: Ice Cream Puts On Its Sundae BestBy Randy AlfredApril 2, 1922: Rorschach Dies, Leaving a Blot on <nobr>His Name</nobr>By Randy AlfredBusinessApril 1, 2004: Gmail Hits Webmail G-SpotBy Michael CaloreMarch 31, 1999: The Matrix Hooks UsBy Scott ThillMarch 30, 240 B.C.: Comet Cometh to CathayBy Randy AlfredMarch 27, 1977: The Worst Air Disaster EverBy Tony LongMarch 26, 1850: Birth of a Socialist Sci-Fi WriterBy Tony LongMarch 25, 1916: Ishi Dies, a World EndsBy Randy AlfredMarch 24, 1989: Valdez Spill Causes Environmental CatastropheBy Tony LongMarch 23, 1989: Cold Fusion Gets Cold ShoulderBy Randy AlfredMore Stories