Fig. 35. Current, force, motion. Dynamos, alternators and transformers. 1893.
Fig. 35. Current, force, motion. Dynamos, alternators and transformers. 1893. -- source link
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Fig. 35. Current, force, motion. Dynamos, alternators and transformers. 1893. -- source link
Tumblr Blog : histoire-d-elle.tumblr.com