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History Explorer Results (137)
Related Books (14)
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Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
4/7/2016
Invention rarely stops when the inventor introduces a new device. Thomas A. Edison and his team worked to improve his electric lighting system for some years after the initial introduction in 1880. This lamp shows the changes made after six years of labor aimed at lowering costs and increasing pr
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
4/4/2016
Most incandescent lamps were designed for general use in homes and businesses. However, some required special features for use in particular locations. Westinghouse engineers designed this so-called mill lamp for use in factories and other areas subject to high levels of vibration. An intricate i
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
9/17/2015
Alfred Vail made this key, believed to be from the first Baltimore-Washington telegraph line, as an improvement on Samuel Morse's original transmitter. Vail helped Morse develop a practical system for sending and receiving coded electrical signals over a wire, which was successfully demonstrated
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
9/17/2015
One of two telephones used by Alexander Graham Bell in a demonstration that took place between Boston and Salem, Massachusetts on November 26, 1876. Critical features are the iron diaphragm (seen as a black circular disc mounted on the vertical wooden support), two electromagnets (seen in white,
Grade Range:
6-12
Resource Type(s):
Reference Materials, Interactives & Media
Duration:
5 minutes
Date Posted:
6/30/2014
Although we might think of fax machines as a relatively recent (if somewhat dated) technology, this episode uncovers the surprising history of the wireless fax machine. Host Tory Altman speaks with Hal Wallace, associate curator of the museum's electricity collection, about this 1930s device that
Grade Range:
4-12
Resource Type(s):
Primary Sources, Interactives & Media
Duration:
7 minutes
Date Posted:
2/5/2014
A short video, this one is great as a lesson opener! "Political Comic Books" is the fourth episode in the NMAH webseries "Founding Fragments." Join host Tory Altman for a behind-the-scenes look at some of our most intriguing and little-known objects.  Hear personal interviews with curators a
Grade Range:
6-12
Resource Type(s):
Interactives & Media
Duration:
14 minutes
Date Posted:
12/16/2013
Joseph Henry was one of America's preeminent 19th-century scientists, a pioneer in the investigation of electromagnetism and other fields of study, and the first Secretary of the Smithsonian Institution. This video shows how Henry's research found practical application in
Grade Range:
8-12
Resource Type(s):
Lessons & Activities
Date Posted:
10/25/2013
These three activities are designed as follow-up materials for the National Youth Summit on Freedom Summer, but can be modified for any content.
Grade Range:
3-5
Resource Type(s):
Interactives & Media
Duration:
23 minutes
Date Posted:
3/5/2013
Bestselling 39 Clues author David Baldacci takes students on a webcast field trip to meet renowned museum curators, go behind the scenes, and investigate some of the most fascinating mysteries of American history. Baldacci is the author of Day of Doom, the last bo
Grade Range:
9-12
Resource Type(s):
Interactives & Media
Date Posted:
1/7/2013
In this brief video, curators Harry Rubenstein and Larry Bird share key objects from the political history collection representing inaugurations and presidential campaigns dating back to the early 1800s.  See how objects are stored and continuity and change in campaign and inaugural material
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