- Il existe en France 37 325 km de route nationales dont le crédit d'entretien s'élève à 30 millions de francs.
- Marcel DEPREZ promulgate the theory that in the electrical transmission of energy the efficiency is independent of the distance of transmission
- This theory, first started in March, 1880, has provoked considerable discussion. It means, in effect, that we can make the distance, and hence the resistance of the line, whatever we please without loss of efficiency.
We cannot here enter into a full discussion of this view, but we may say briefly, that as a theory, pure and simple, the proposition is correct. But there are practical difficulties which prevent its realization, and it would be dangerous to apply it in the calculations of a working enterprise. It is evident that the quantity of heat generated in a conductor by the electric current ought to increase with the length of the wire, and hence the loss would increase. On the other hand, M. Deprez argues that the production of heat varies as the square of the intensity of the current, and that the latter is diminished by an increase of the length of the line.
T. C. Martin et J. Wetzler, The Electric Motor and Its Applications, 1891
- Camille FAURE créé la batterie avec bac, grilles et électrolyte ("tartinage" des plaques d'accumulateur avec un composé de plomb).
- Voiture de Camille FAURE et Jules RAFFARD (accumulateurs, 1880-1881)
- J.K. STARLEY construit une petite voiture électrique (Angleterre).
- Machine Thomson HOUSTON
- Induit sphérique à 3 enroulements à 120° avec un point commun.
Elle équipe en alternatif les réseaux d'éclairage public et peut alimenter jusqu'à 60 lampes à arc en série.
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