Aller au contenu

Le topic des trucs marrants à partager.


Will.

Messages recommandés

  • Réponses 18 k
  • Créé
  • Dernière réponse
Posté(e)

C'est pas marrant dans le sens à se taper les cuisses, mais plutôt marrant dans le sens amusant de savoir ça :

On the night of Sept. 2, 1859, an enormous solar flare produced brilliant auroras around the world. Newspapers and ships’ logs reported striking displays throughout the United States, Europe, Japan, and Australia; Bostonians could read by their light at 1 a.m.

At the height of the storm, a curious conversation took place between two New England telegraph operators:

Boston: Please cut off your battery, and let us see if we cannot work with the auroral current alone.
Portland, Maine: I have done so. Will you do the same?
Boston: I have cut my battery off and connected the line with the earth. We are working with the current from the Aurora Borealis alone. How do you receive my writing?
Portland: Very well indeed. Much better than with the batteries on. There is much less variation in the current, and the magnets work steadier. Suppose we continue to work so until the Aurora subsides?
Boston: Agreed. Are you ready for business?
Portland: Yes; go ahead.

They carried on in this way for two hours, the storm inducing enough current in the lines to support their transmissions. It marked the first conclusive link between auroral activity and electricity.

Source : Futility Closet : Charged Words

Posté(e)
ScreenShot?

PDF (page 30) :siffle:

s'pa exactement le même titre mais déjà c'est plus dans le thème que leur changement :D

pas pu screen j'avais fermé la fenêtre et j'garde pas les cache au taff ^^ ptre qu'avec le cache google on pourrait retrouver ca :p

Archivé

Ce sujet est désormais archivé et ne peut plus recevoir de nouvelles réponses.

×
×
  • Créer...