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  3. Rutherford scattering experiments - Wikipedia

    en.wikipedia.org/wiki/Rutherford_scattering...

    In a cloud chamber, a 5.3 MeV alpha particle track from a 210 Pb source (1) undergoes Rutherford scattering (2), deflecting by an angle of about 30°. It scatters once again (3), and finally comes to rest in the gas. The target nucleus recoils, leaving a short track (2). (cm scale) The first impacts were to encourage new focus on scattering ...

  4. File:Geiger-Marsden experiment expectation and result.svg

    en.wikipedia.org/wiki/File:Geiger-Marsden...

    English: A simple diagram illustrating the Geiger-Marsden experiment.The left side shows the Thomson scattering pattern that the experimenters expected to see, given the plum pudding model of the atom.

  5. Triple beam balance - Wikipedia

    en.wikipedia.org/wiki/Triple_beam_balance

    Pointers - The scale pointer marks the equal point of the object's mass on the scale and mass on the beam; Zero adjustment knob - This is used to manually adjust the triple beam balance to the 'zero' mark (check to ensure that the pointer is at zero before use). Before using triple beam balance, the scale pointer should be at zero.

  6. Rail fastening system - Wikipedia

    en.wikipedia.org/wiki/Rail_fastening_system

    A chair screw (also known as coach screw [16]) is a large (~6 in or 152 mm length, slightly under 1 in or 25 mm diameter) metal screw used to fix a chair (for bullhead rail), baseplate (for flat bottom rail) or to directly fasten a rail. Chair screws are screwed into a hole bored in the sleeper. [17]

  7. Marston Mat - Wikipedia

    en.wikipedia.org/wiki/Marston_mat

    RAF aircrew with one of their Bristol Beaufighters on a PSP airstrip at Biferno, Italy, August 1944. Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and ...

  8. Rutherford backscattering spectrometry - Wikipedia

    en.wikipedia.org/wiki/Rutherford_backscattering...

    Rutherford backscattering spectrometry (RBS) is an analytical technique used in materials science.Sometimes referred to as high-energy ion scattering (HEIS) spectrometry, RBS is used to determine the structure and composition of materials by measuring the backscattering of a beam of high energy ions (typically protons or alpha particles) impinging on a sample.

  9. Bosun's chair - Wikipedia

    en.wikipedia.org/wiki/Bosun's_chair

    View from the bosun's chair towards the ship deck from a height of around 15 m, the full mast height of the c. 12 m long sailing yacht. The photo was taken while a broken line running over the top of the mast was being replaced. At the Old Salt's regatta, the bosun's chair is a six-person competition.

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