The Nucleus (HSC SSCE Physics): Flashcards
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Thomson's plum pudding model description
Thomson's plum pudding model description
Positive sphere with electrons embedded within
Geiger-Marsden experiment director & year
Geiger-Marsden experiment director & year
Ernest Rutherford, 1911
Alpha particle composition
Alpha particle composition
2 protons + 2 neutrons (helium nucleus)
Ratio of alphas deflected >
Ratio of alphas deflected >
1 in 8000
Rutherford's nucleus characteristics
Rutherford's nucleus characteristics
Tiny, dense, positive charge, nearly all mass
Proportion of atom that is empty space
Proportion of atom that is empty space
Most of the atom
Why most alpha particles pass through foil
Why most alpha particles pass through foil
Travel through empty space between nucleus & electrons
Cause of large-angle alpha deflections
Cause of large-angle alpha deflections
Direct collision with tiny, dense, positive nucleus
Classical physics stability problem
Classical physics stability problem
Accelerating electrons should emit radiation & spiral inward
What Rutherford's model led to
What Rutherford's model led to
Development of quantum physics