RSS feed source: NIST Buildings & Construction
Investigators share likely failure scenarios, advance indicators of building’s distress.
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Author: WeWorldMedia-admin
RSS feed source: NIST Buildings & Construction
In December 1947, three physicists at Bell Telephone Laboratories—John Bardeen, William Shockley, and Walter Brattain—built a compact electronic device using thin gold wires and a piece of germanium, a material known as a semiconductor. Their invention, later named the transistor (for which they were awarded the Nobel Prize in 1956), could amplify and switch electrical signals, marking a dramatic departure from the bulky and fragile vacuum tubes that had powered electronics until then.
Its inventors weren’t chasing a specific product. They were asking fundamental questions about how electrons behave in semiconductors, experimenting with surface states and electron mobility in germanium crystals. Over months of trial and refinement, they combined theoretical insights from quantum mechanics with hands-on experimentation in solid-state physics—work many might have dismissed as too basic, academic, or unprofitable.
Their efforts culminated in a moment that now marks the dawn of the information
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RSS feed source: NIST Buildings & Construction
The Democratic Republic of the Congo (DRC) is experiencing an Ebola outbreak in the Bulape and Mweka Health Zones of Kasai Province.
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RSS feed source: NIST Buildings & Construction
Sixteen people in ten states have gotten sick from the same strain of Salmonella.
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