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Electronic Music Inquiry Unit
On 25 October 1906 Lee de Forest submitted a patent application on a "Device for amplifying feeble electrical currents", which included the first form of the 3-electrode Audion. The device and…
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Information Theory Unit
Sometime around 2,800 years ago, the Phoenicians made a major invention—the vowel! That is, they realized that instead of each symbol representing a syllable (ba, be, bi, bo, bu, ca, ce, ci, co, cu,…
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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…
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Hands-on Activity
Information Theory Unit
Information Theory Unit Cuneiform was one of the first writing systems, developed 5,000 years ago in Mesopotamia to record information on clay tablets. By asking students to record current …
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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…
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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…
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Primary Source
Radio Inquiry Unit
Radio Inquiry Unit From the Rare Book & Manuscript Library, Columbia University Visit Source Download PDF …
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Hands-on Activity
Skyscrapers Inquiry Unit
Skyscrapers Inquiry Unit Download PDF Skyscrapers Hands-On Activity Prompt for the students: Using only the materials provided, teams of students will design and build a structure as tall as p…
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Multimedia
Refrigerated Rail Car Inquiry Unit
Explore an MDT refrigerator railcar at the Rochester & Genesee Valley Railroad Museum and become aware of the importance of this technological innovation. Witness how the refrigerator railcar prov…
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Multimedia
Refrigerated Rail Car Inquiry Unit
Travel back in time to Despatch, NY, currently known as East Rochester, NY, and discover how the refrigerator railcar aided in the development and growth of an entire village. When Merchants Despat…
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