Transcript:

They started talking about circuits that acted in nanoseconds.  Billionths of a second.  Well, I didn't know what a billion was (I don't think most of those men downtown knew what a billion is either).  And uh .. if you don't know what a billion is, how on Earth do you know what a billionth is?  I fussed and fumed.  Finally one morning, in total desperation, I called over to the engineering building and I said: "Please cut off a nanosecond and send it over to me."  And I brought you some today.  Now, what I wanted when I asked for a nanosecond was:  I wanted a piece of wire which would represent the maximum distance that electricity could travel in a billionth of a second.  Now, of course, it wouldn't really be through wire.  It'd be out in space; the velocity of light.  So, if you start with the velocity of light and use your friendly computer, you'll discover that a nanosecond is 11.8 inches long (the maximum limiting distance that electricity can travel in a billionth of a second).  Finally, at the end of about a week, I called back and said:  "I need something to compare this to.  Could I please have a microsecond?"  I've only got one microsecond (so I can't give you each one).  Here's a microsecond:  984 feet.  I sometimes think we ought to hang one over every programmer's desk (or around their neck) so they know what they're throwing away when they throw away microseconds.  Now I hope you all get the nanoseconds.  They're absolutely marvelous for explaining to wives and husbands and children and Admirals and Generals and people like that.  An Admiral wanted to know why it took so damn long to send a message via satellite.  And I had to point out that between here and the satellite there were a very large number of nanoseconds.  You see -- you can explain these things.  It's really very helpful, so be sure to get your nanoseconds.

Amazon traque ce qui se passe sur les Kindle

Avast revend les données

«« Minute papillon », « En voiture Simone »... Les formules surannées constellent notre quotidien. Des maximes aussi rigolotes que charmantes mais qui, avouons-le, ont pris quelques rides. »
https://fr.wikipedia.org/wiki/Simone_Louise_des_Forest

Réseau ferré 1921 vs 2020

Effrayant :  «On peut identifier le genre d’une personne, son âge approximatif, ses émotions, mais aussi dans certaines circonstances son rythme cardiaque»

Suite de ça http://deleurme.net/liens/?u6A_dA