If you think of records as platters, you are of a certain age. If you don’t remember records at all, you are even younger.

It is Thomas Edison's electric pen ... Only a year after licensing the pen, Edison produced the phonograph and became world famous. Two years after, he gave the world light.

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 ...