File:Electroculture (USDA - 1918).png

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English: General view of the experimental field at Arlington Experiment Farm (Washington D.C., USA), showing the system of double insulators used in suspending the wire network from poles and the power lines leading to the motor in the apparatus house (foreground). Poles supporting the grounded network along the side of the control plat may be seen in the distance.
Français : Vue générale d'un champ expérimental d'électroculture (Arlington Experiment Farm, Washington (district de Columbia) aux USA). La photographie, datée du 08 mai 1918, montre le système de doubles isolateurs utilisés pour suspendre le réseau de fils entre les pôles et les lignes électriques reliées au générateur (situé dans le petit bâtiment de bois visible au premier plan). Les poteaux supportant le réseau mis à la terre, le long du côté de la platine de commande sont visibles au loin.
Date
Source Briggs, L. J., Campbell, A. B., Flint, L.H. and Heald, R. H. (january 1926) Electroculture. United State Department of Agriculture, Departement bulletin n°1379, Washington D.C. Read on line
Author Briggs, L. J., Campbell, A. B., Flint, L.H. and Heald, R. H.

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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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