Un drapeau blanc accroché au sommet de la cathédrale par un anonyme. (DNA)
On July 17th, for the first time in nearly 3 years, the sunspot number dropped to zero.
Many years ago, on the eve of World War II, a well-known actress of the day and my father, an avant-garde American composer, while at a dinner party, thought up an interesting scheme to control armed torpedoes over long distances without the enemy detecting them or jamming their transmissions. While they had the foresight to patent their invention, the term of the patent lapsed without either of them realizing any money from their invention, which formed the basis of what was to later become spread-spectrum communications.
Hedy Lamarr, George Antheil
and the Secret Communications System Patent