Primary Source
Perforated Disk Siren
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
Discogs
This document includes a permanent record of vinyl recordings mentioned in the IEEE REACH Electronic Music Inquiry Unit made available via Discogs.com. Discogs does not require a login and provides…
Learn more
Hands-on Activity
Skyscrapers Hands-On Activity
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…
Learn more
Inquiry Unit
Skyscrapers
The symbol of growth in China and India of the early 21st century is the proliferation of skyscrapers. This was also the symbol of urbanization in the early 20th century U.S. How did this come about? …
Learn more
Primary Source
Henry Bessemer of London, England – US Patent #16,082, Nov. 11, 1856 “Manufacture of Iron and Steel”
English inventor Henry Bessemer’s US patent for the Manufacture of Iron and Steel. Henry Bessemer is well-known for inventing the first process to mass-produce steel inexpensively. This patent, howe…
Learn more
Primary Source
Home Insurance Building, Chicago, Illinois & Ditherington/Shrewsbury Flax Mill Building, Shropshire, England
Ryerson and Burnham Archives, The Art Institute of Chicago – "The Home Insurance Bldg. was the first of the tall fireproof buildings to be erected in the West,” states Jenney, William Le Baron in…
Learn more
Primary Source
The Electric Elevator
Article that highlights the history and development of the electric elevator. Visit Source Download PDF…
Learn more
Primary Source
Oil Lamps of the 19th and 20th Century
Electric Lighting Inquiry Unit
Images of old oil lamps from 1840 and 1840. Whale oil lamp, c. 1840. Mrs. Sauer putting oil in lamp, Cavalier County, N.D, Oct. 1940. Download PDF Visit Source 1 Visit Source 2 …
Learn more
Primary Source
Portrait of Hertha Marks Ayrton
Electric Lighting Inquiry Unit
Hertha Marks Ayrton was a British engineer, mathematician, physicist and inventor. She was the first woman elected member of The Institution of Electrical Engineers (London) 1899, the first woman to r…
Learn more
Primary Source
Loading/Icing Refrigerated Cars
Refrigerated Rail Car Inquiry Unit
A photo of 3 men loading strawberries into a refrigerated car and a photo of 2 men "icing" a refrigerated car, both courtesy of the Library of Congress. Download PDF Visit Source 1 Visit Sour…
Learn more