Opmerkelijk

Wetenschappers van de universiteit van Rochester hebben ontdekt dat licht ook achteruit kan gaan:

It’s weird stuff,” says Boyd. “We sent a pulse through an optical fiber, and before its peak even entered the fiber, it was exiting the other end.

Heel bijzonder…

Ander nieuws. Ik zag hier dat het aantal uitstaande Airmiles wereldwijd groter is dat het aantal dollars wat in omloop is. The Guardian schreef er ook al over, een grappige quote over het Airmilessysteem:

A close look at the rules can expose unbeatable deals. A civil engineer from California, David Phillips, became known as the “pudding guy” after calculating that an offer of frequent flyer miles with food at his local supermarket yielded a remarkable return. He spent $3,000 on 12,000 Healthy Choice chocolate desserts and earned $25,000 worth of free flights, enough to pay for travel for the rest of his life.