sh in 1953.

    In tinction—o transmit a crisp signal more t for time—but gave it up le future.

    On t t ter took a post at McGill University in Montreal, and teady rise to greatness. By time igations into tegration of ts, and try of radioactivesubstances,” according to tation) o Mancer University,and it , t  important ermining tructure and nature of tom.

    1ted matician and steel baron in Victoriar England. In 1870, y ￡6,300 to build an experimental lab.

    By tietury it  atoms s—tron ablis—but it  kno toget sook. Some ps t t atomsmigogetly  any edspace. t an atom  bun or aplum pudding: a dense, solid object t carried a positive c t udded ively crons, like ts in a currant bun.

    In 1910, Ruted by udent er invent tion detector t bears oms, or alpicles, at as of gold foil.

    2to Rutonis, some of ticles bounced back. It  rebounded into his lap.

    t not supposed to er considerable reflection ion: ticles t bounced back riking somet t of tom, om, Rutly empty space,  ter.

    t gratifying discovery, but it presented one immediate problem. By all tional poms s t.

    Let us pause for a moment and consider tructure of tom as  noom is made from tary particles: protons, rical crons, rical crons, rons are packed into trons spin aroundoutside. tons is om its city. An atom on is an atom of ons is ons is litime you add a proton you get a ne. (Because tons in an atom is alrons, you imes see it ten t it is trons t defines an element; it comes tot o me is