Serber described how in Nagasaki he noticed that the sides of all the telephone poles facing the explosion were charred. He followed a line of such charred poles out beyond two miles from ground zero. “At one point,” Serber recounted, “I saw a horse grazing. On one side all its hair was burnt off, the other side was perfectly normal.” When Serber somewhat flippantly remarked that the horse nevertheless seemed to be “happily grazing,” Oppenheimer “scolded me for giving the impression that the bomb was a benevolent weapon.”

