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  2. List of experiments in physics - Wikipedia

    en.wikipedia.org/wiki/List_of_experiments_in_physics

    Geiger–Marsden experiments: Hans Geiger, Ernest Marsden, Ernest Rutherford: Discovery Atomic nucleus: 1909 Oil drop experiment: Robert A. Millikan and Harvey Fletcher: Measurement Elementary charge of the electron: 1913 Compton generator: Arthur Compton: Demonstration Earth's rotation: 1914 Franck–Hertz experiment: James Franck and Gustav ...

  3. Lists of shapes - Wikipedia

    en.wikipedia.org/wiki/Lists_of_shapes

    Lists of shapes cover different types of geometric shape and related topics. They include mathematics topics and other lists of shapes, such as shapes used by drawing or teaching tools. They include mathematics topics and other lists of shapes, such as shapes used by drawing or teaching tools.

  4. Empirical evidence for the spherical shape of Earth - Wikipedia

    en.wikipedia.org/wiki/Empirical_evidence_for_the...

    The only shape that casts a round shadow no matter which direction it is pointed is a sphere, and the ancient Greeks deduced that this must mean Earth is spherical. [ 8 ] The effect could be produced by a disk that always faces the Moon head-on during the eclipse, but this is inconsistent with the fact that the Moon is only rarely directly ...

  5. Patterns in nature - Wikipedia

    en.wikipedia.org/wiki/Patterns_in_nature

    Two bubbles together form a more complex shape: the outer surfaces of both bubbles are spherical; these surfaces are joined by a third spherical surface as the smaller bubble bulges slightly into the larger one. [11] A foam is a mass of bubbles; foams of different materials occur in nature.

  6. Experiment - Wikipedia

    en.wikipedia.org/wiki/Experiment

    An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs when a particular factor is manipulated.

  7. Shape - Wikipedia

    en.wikipedia.org/wiki/Shape

    That is, the result of moving a shape around, enlarging it, rotating it, or reflecting it in a mirror is the same shape as the original, and not a distinct shape. Many two-dimensional geometric shapes can be defined by a set of points or vertices and lines connecting the points in a closed chain, as well as the resulting interior points.

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