Historical documents

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1906 Preliminary Meeting Report

The minutes from our first meeting.
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IEC History: 1906 - 1956

Written by former IEC General Secretary Louis Ruppert on the occasion of our 50th anniversary.
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IEC Bulletin - 75th anniversary edition

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1901 - 2001, Celebrating the Centenary of SI

A book on the contribution of Giovanni Giorgi to the International System of Units.
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IEC - CENELEC Agreement

The Frankfurt Agreement was signed between CENELEC and the IEC in 2016.

Giovanni Giorgi's correspondence with Oliver Heaviside

The original correspondence with British mathematician Oliver Heaviside. In Giorgi’s hands, the ideas of Heaviside became essential elements both for developing new logical descriptions of electromagnetic phenomena and for improving the system of units.

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Giovanni Giorgi - Handwritten letter

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Giovanni Giorgi - Original paper

"Rational Units of Electromagnetism"
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Handwritten letter, 25 February 1902

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Typewritten letter, 11 March 1902

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Typewritten letter

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Handwritten letter