large/12904/worldswithinworlds_v1-3_1904_librivox_64kb_mp3/worldswithinworlds_01_asimov_64kb_153
large/12904/worldswithinworlds_v1-3_1904_librivox_64kb_mp3/worldswithinworlds_01_asimov_64kb
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12904
It couldn't be very large for if it were the alpha particles would hit it frequently. Instead, the alpha particles made very few hits. This meant the massive portion was very small and that most alpha particles tore through the atom without coming anywhere near it. IT COULDN'T BE VERY LARGE FOR IF IT WERE ALPHA PARTICLES WOULD HIT IT FREQUENTLY INSTEAD THE ALPHA PARTICLES MADE VERY FEW HITS THIS MEANT THE MASSIVE PORTION WAS VERY SMALL AND THAT MOST ALPHA PARTICLES TORE THROUGH THE ATOM WITHOUT COMING ANYWHERE NEAR IT
of ions and the fact that atoms could give off electrons or absorb them, it was not satisfactory in all ways. Further investigations yielded results not compatible with the raisins-in-the-pound-cake notion. In 1906 Rutherford began to study what happened when massive subatomic particles, such as alpha particles, passed through matter. When alpha particles passed through a thin film of gold, for instance, they raced through, for the most part, as though nothing were there. The alpha particles seemed to push the light electrons aside and to act as though the positively charged main body of the atom that Thomson had pictured was not solid, but was soft and spongy. The only trouble was that every once in a while an alpha particle seemed to strike something in the gold film and bounce to one side. Sometimes it even bounced directly backward. It was as though somewhere in each atom there was something at least as massive as the alpha particle. How large was this massive portion of the atom?   EXISTENCE OF IONS AND THE FACT THAT ADAMS COULD GIVE OFF ELECTRONS OR ABSORB THEM IT WAS NOT SATISFACTORY IN ALL WAYS FURTHER INVESTIGATIONS YIELDED RESULTS NOT COMPATIBLE WITH THE RAISINS IN THE POUND CAKE NOTION IN NINETEEN O SIX RUFFORD BEGAN TO STUDY WHAT HAPPENED WHEN MASSIVE SUB ATOMIC PARTICLES SUCH AS ALPHA PARTICLES PASSED THROUGH MATTER WHEN ALPHA PARTICLES PASSED THROUGH A THIN FILM OF GOLD FOR INSTANCE THEY RACED THROUGH FOR THE MOST PART AS THOUGH NOTHING WERE THERE THE ALPHA PARTICLES SEEMED TO PUSH THE LIGHT ELECTRONS ASIDE AND ACT AS THOUGH THE POSITIVELY CHARGED MAIN BODY OF THE ATOM THAT THOMPSON HAD PICTURED WAS NOT SOLID BUT WAS SOFT AND SPONGY THE ONLY TROUBLE WAS THAT EVERY ONCE IN A WHILE AN ALPHA PARTICLE SEEMED TO STRIKE SOMETHING IN THE GOLD FILM AND BOUNCE TO ONE SIDE SOMETIMES IT EVEN BOUNCED DIRECTLY BACKWARD IT WAS AS THOUGH SOMEWHERE IN EACH ATOM THERE WAS SOMETHING AT LEAST AS MASSIVE AS THE ALPHA PARTICLE HOW LARGE WAS THIS MASSIVE PORTION OF THE ATOM 
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