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An Electric Laboratory at the US Government Bureau of Standards (b/w photo)

An Electric Laboratory at the US Government Bureau of Standards (b/w photo)
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Copyright status
Undetermined copyright
Largest available format 4169 × 2656 px 3 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB]
Large 4169 × 2656 px 353 × 225 mm 3.4 MB
Medium 1024 × 653 px 87 × 55 mm 703 KB
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IMAGE number
LLM8668956
Image title
An Electric Laboratory at the US Government Bureau of Standards (b/w photo)
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Photographer
American Photographer, (20th century) / American
Location
Private Collection
Medium
black and white photograph
Date
C20th AD
Image description

An Electric Laboratory at the US Government Bureau of Standards. Showing Potentiometer and Regulating Resistances. The Observer is Reading the Deflection of a Balance by Means of Which the Exact Value of the Current is Determined. Illustration for Cyclopedia of Applied Electricity (American Technical Society, Chicago, 1921).

Photo credit
© Look and Learn / Bridgeman Images
Image keywords
20th century / 1900s / 1910s / 1920s / electricity / engineering / reading / science / black and white / photo / mzphoto / balance

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