he saw a white light changing into yellow and then orange: “A big ball of orange, the center that was so bright, becomes a ball of orange that starts to rise and billow a little bit and get a little black around the edges, and then you see it’s a big ball of smoke with flashes on the inside of the fire going out, the heat.” A full minute and a half after the explosion, Feynman finally heard an enormous bang, followed by the rumble of man-made thunder.
