Primary Source
Information Theory Unit
Richard W. Hamming, Morristown, and Bernard D. Holbrook, Madison, N.J., assignors to Bell Telephone Laboratories, Incorporated, New York, N.Y., a corporation of New York Application January 11, 19…
Learn more
Primary Source
Information Theory Unit
Hieroglyphics are an original form of writing out of which all other forms have evolved. Museo Egizio, Papyrus Collection, Turin Papyrus Online Database, Book of the Dead, A 14-meter-long papyrus f…
Learn more
Primary Source
Information Theory Unit
An optical telegraph with a line of stations, typically towers, that was used to convey textual information by means of visual signals. It was comprised of pole on top of a tower, and a pivoting cross…
Learn more
Primary Source
Radio Inquiry Unit
Radio Inquiry Unit While serving in the U.S. Army during World War I, Armstrong synthesized three ideas to create his superheterodyne circuit for selectively amplifying a very high fr…
Learn more
Primary Source
Radio Inquiry Unit
Radio Inquiry Unit According to the E.H. Armstrong, wireless receiving system patent, “The present invention relates to improvements in the arrangement and connections o…
Learn more
Primary Source
Radio Inquiry Unit
Radio Inquiry Unit From the Rare Book & Manuscript Library, Columbia University Visit Source Download PDF …
Learn more
Primary Source
Electronic Music Inquiry Unit
The Art of Noises - Futurist Manifesto “L'arte dei rumori (The art of noises) takes the form of a letter from artist and instrument builder Luigi Russolo to the musician Francesco Balilla Pratell…
Learn more
Primary Source
Electronic Music Inquiry Unit
The Telharmonium - An Apparatus for the Electrical Generation and Transmission of Music In 1895 Thaddeus Cahill submitted his first patent for the Telharmonium “The Art of and Apparatus for Gener…
Learn more
Primary Source
Electronic Music Inquiry Unit
Perforated Disk Siren From the Smithsonian, Museum of Natural History. Woodwind instruments are some of the oldest used instruments, and several flutes have been discovered which date between 35,0…
Learn more
Primary Source
Electronic Music Inquiry Unit
This document includes historical insight on Edison’s Tinfoil Phonograph, including presenting it to President Rutherford B. Hayes, as well as a demonstration to live audience. Visit Source 1 Vi…
Learn more