Geek Fact for May 11th

In 1951, Jay Forrester applied for a patent for magnetic core memory.

Until then, large glass electrostatic tubes were used. They were very unreliable, failing every twenty to sixty minutes. Forrester began a search for reliable memory capability. This would lead him to make one of the most important discoveries in computer history: magnetic-core memory.

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In 1916, German astronomer Karl Schwarzschild died.

Schwarzschild predicted the existence of black holes. He also established a method for determining a star’s brightness from photographs by comparing its visual and photographic magnitudes to other stars to obtain their color index.

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About the Author

Judy Novotny

Judy is a computer veteran with 30 years of experience. She has owned everything from a TRS-80, Apple IIe and various Windows-based PCs. She is currently living in her Apple ecosystem at home consisting of an iPhone, iPad, iMac, MacBook, Apple TV, iPod nano and two Time Capsules. She is a fan of all things mobile since she got her first Palm Pilot in 1999. Check out her iPad app, Number Wizard, in the App Store. Follow her on Twitter @junovotech or at