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: In the '''experiment''' [[Ernest Rutherford|Rutherford's]] students ([[Ernest Marsden]] and [[Hans Geiger]]) fired high speed [[Alpha Particle|alpha particle]]s at a thin sheet of [[gold]] foil. A detector could be placed at different positions around the '''experiment''' which would make a small flash of light every time an [[Alpha Particle|alpha particle]] reached the detector. This could be used to find the path of the [[Alpha Particle|alpha particles]] as they passed through the [[gold]] foil.
: The path of the [[Alpha Particle|alpha particle]]s provided evidence to disprove the [[Plum Pudding Model]].
: If the [[Plum Pudding Model]] were correct then nearly all of the [[Alpha Particle|alpha particles]] should have passed straight through, unaffected, since the [[Alpha Particle|alpha particle]] is [[Positive Charge|positively charged ]] while [[atom]]s should have an even spread of [[Electrical Charge|charge]]d [[particle]]s all the way through them. There should have been no [[Electrostatic Force|electrostatic force]] to change their direction.
: They observed that most of the [[Alpha Particle|alpha particle]]s went through in a straight line. A small number were [[deflect]]ed by a small angle and a very small number bounced off the [[Gold]] back towards the [[Alpha Particle|alpha]] source.
These observations led to a number of conclusions:
{| class="wikitable"
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|[[File:AlphaScatteringExperiment.png|center|200px500px]]
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| style="height:20px; width:300px; text-align:center;" |This [[diagram]] shows the expected path of [[Alpha Particle|alpha particles]] through an [[atom]] in the [[Plum Pudding Model]] (Thompson Model) and what was actually observed, which led to the development of the [[Nuclear Model]](Rutherford Model).
|}
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac12 ''Alpha scattering, page 43, GCSE Physics; The Revision Guide, CGP, AQA']
:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Alpha scattering, page 92, GCSE Physics, Hodder, AQA']
:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Alpha scattering, pages 341-2, GCSE Combined Science Trilogy 1, Hodder, AQA']