“About what?”
“Didn’t you get my letter?”
“No. I’ve been in England.”
“Did he show you?”
“Did who show me what?”
Grein scowled, scribbled an equation, and pushed it across.
Marvin looked at it and remarked, “I’d call that a helium nucleus pushing a hydrogen atom ahead of it about forty thousand times faster than the bullet that killed Moseley.”
“Don’t you know what Rutherford has done since we last met?”
“No.”
“He has disintegrated the nitrogen atom. He has knocked hydrogen atoms out of the nitrogen nucleus.”