Perforated Disk Siren

Primary Source

Perforated Disk Siren

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
Discogs

Primary Source

Discogs

Electronic Music Inquiry Unit

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
Skyscrapers Hands-On Activity

Hands-on Activity

Skyscrapers 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…

Learn more
Skyscrapers

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
The Electric Elevator

Primary Source

The Electric Elevator

Skyscrapers Inquiry Unit

Article that highlights the history and development of the electric elevator. Visit Source Download PDF…

Learn more
Oil Lamps of the 19th and 20th Century

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
Portrait of Hertha Marks Ayrton

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
Loading/Icing Refrigerated Cars

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