Photo: Luis (left ... a detonating device for the atomic bomb. He was on board the bomber Enola Gay when it dropped the bomb on Hiroshima. Alvarez was shocked and sickened by what he saw, but ...

as thermonuclear (H-bomb) reactions do. It might burn peacefully, almost like an old-fashioned fire of chemical fuel. Tall, blond, athletic Luis Alvarez, 45, is not only a leading physicist ...