Caption: Gold foil experiment. Animation depicting the expected outcome of Rutherford's 1909 experiment to probe the structure of an atom. At left, a source of alpha radiation is firing alpha particles (helium nuclei) at a thin sheet of gold foil (down centre). Most of the alpha particles pass straight through the foil, as was expected, with only minor deviations. The inset shows a close-up of a gold atom according to the prevailing "plum pudding" model, in which negatively charged electrons (blue) are studded in a diffuse cloud of positive charge (red). This relatively diffuse atom would not be able to deflect a large alpha particle. However, this was not what was observed. For a clip showing the actual result, which led to the discovery of the atomic nucleus, see K003/3969.

Release details: Model release not required. Property release not required.

Keywords: 1900s, 1909, 20th century, alpha radiation, animated, animation, atom, atomic, beam, bohr model, demonstration, educational, electron, electrons, ernest rutherford, experiment, experimentation, geiger marsden experiment, gold foil experiment, hans geiger, history of science, nuclear, nuclear physics, nucleus, outcome, physical laboratories, physics, planetary model, plum pudding model, result, rutherford experiment, rutherford scattering, source, structure, test, thin

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Rutherford's gold foil experiment

K003/3970 Rights Managed

Downloadable master

Duration: 00:00:20.01

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 476.3M


Capture format: QuickTime Animation

Codec: None

Please contact Science Photo Library if you require the original, or other formats.


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