On December 7, 1877 Thomas Edison demonstrated his phonograph at the New York City offices of the nation's leading technical weekly publication, Scientific American. The following report set off ...

Once the basic principle of the phonograph was discovered, the years of arduous work on its development by Edison and others dealt largely with the composition and handling of materials for ...

Similar to the phonograph record that later followed, sound waves were turned into mechanical vibrations that etched an analog signal in the wax. Commercialized in the late 1880s by Thomas Edison ...

1900: Phonographs play sound recorded on cardboard cylinders coated with wax. Invented in 1885, they replaced Thomas Edison's foil-wrapped metal cylinders. 1901: Emile Berliner invents the ...

This article originally appeared on MyCentralJersey.com: The NJ gem and fossil show is returning to Edison. Here's everything you need to know ...

Pink ChalcedonyA pink chalcedony shows off its beauty. Chalcedonies include many types of cryptocrystalline quartz gems and feature a number of different colors. Geologists can tell a chalcedony ...

The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations ...

The component in a phonograph turntable that holds the stylus, which is a needle attached to a cantilever arm. The vibrations of the stylus are transferred into electrical energy by a magnet ...

The New Jersey Fall Mineral, Fossil, Gem & Jewelry Show is returning to Central ... New Jersey Convention and Expo Center, 97 Sunfield Ave. in Edison. Daily passes are $10 per person on weekdays ...