- February 19 -

Edison's Phonograph Patented

Patent for Phonograph Issued February 19, 1878 One of Edison's first great inventions Washington - Thomas A. Edison, one of the outstanding geniuses in the history of technology, received patent no. 200,521 for a phonograph on February 19, 1878. This patent is just one of the more than one...

Edison's Phonograph Patented

Patent for Phonograph Issued February 19, 1878 One of Edison's first great inventions
Washington - Thomas A. Edison, one of the outstanding geniuses in the history of technology, received patent no. 200,521 for a phonograph on February 19, 1878. This patent is just one of the more than one thousand Edison was granted for his inventions.

Edison was exceptionally inquisitive, and while tinkering with the telegraph transmitter he discovered that when played back at high speeds, the tape sounded like spoken words. He figured out that the human voice, and other sounds, could cause a light material plate to vibrate. And, when properly placed, a needle could indent the plate, recording the vibrations, and found that yet another needle could play them back. He eventually rigged a tinfoil cylinder and a stylus with which he recorded, 'Mary Had a Little Lamb.'

Edison's inventions have been a mainstay of our economy for over 100 years. At the turn of the 20th century, Edison's New Jersey laboratory (now a national monument), was the hub around which factories employing 5,000 people produced new products, including the mimeograph, the fluoroscope, the alkaline storage battery, dictating machines, and motion picture cameras and projectors. The electric light bulb, his most famous invention, was the foundation for today's General Electric Company.
Source:
http://www.uspto.gov/news/pr/2002/02-13.jsp

Categories:

You may also like...

Interesting events from Science category.

Kid Inventors’ Day

Television. Water skis. Earmuffs. The Popsicle. What do they have in common? All were invented by kids! 500,000 children and teens invent gadgets and games each year. These innovations help make our lives easier - and more fun. Kid Inventors’ Day to be held annually...

First Untethered Spacewalk

>Bruce McCandless II and Robert L. Stewart astronauts made the first untethered spacewalks in history during Space Shuttle mission STS-41B. McCandless and Stewart used their nitrogen-propelled manned maneuvering units (MMUs) to make the first space walk unattached to any orbital vehicle....

International Darwin Day

Darwin Day is a recently instituted celebration intended to commemorate the anniversary of the birth of Charles Darwin on February 12, 1809. The day is used to highlight Darwin's contribution to science and to promote science in general. History The celebration of Darwin's work...

History The celebration of Darwin's work...'>
Bell Patents the Telephone

Where would we be without the telephone? 29-year-old Alexander Graham Bell patented the first telephone March 7, 1876. The first phone call to his assistant was March 10th, 1876. The Scottish-born Bell worked in London with his father, Melville Bell, who developed Visible Speech, a written...

Richter Scale Day

Richter Scale Day celebrates the birth of the inventor of the Richter Scale. Born on April 26, 1900, American seismologist Charles F. Richter (1900–1985) invented the Richter Scale in 1935. The Richter Scale measures the amount of energy released by an earthquake by measuring the...

Asteroid Day

Asteroid Day is a global movement to protect our earth from asteroids. Asteroid Day aims to raise awareness of the threats posed by space rocks and eventually help boost the rate of near-Earth asteroid discovery by a factor of 100.
Asteroid Day is held on June 30, the anniversary of the 1908...

Download KeepIn Calendar

Enjoy the interesting stories even on your phone or tablet