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Thread: High-quality black-and-white photographs of large old machines and tools

  1. #271
    Jon
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    Cyclotron particle accelerator. August, 1939.

    Fullsize image: https://s3-us-west-1.amazonaws.com/h...n_fullsize.jpg



    More: https://en.wikipedia.org/wiki/Cyclotron

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    Supporting Member bruce.desertrat's Avatar
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    bruce.desertrat's Tools
    Cyclotron, huh? Where are the pedals? [gdr]

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    Supporting Member Duke_of_URL's Avatar
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    Ah yes, Ernest Lawrence at U.C. Berkeley back in the day.

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    jdurand's Tools
    Modern version heats a cup of tea in 30 seconds to a minute.

  6. #275
    Jon
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    Inside a high-pressure steam drum.

    Fullsize image: https://s3-us-west-1.amazonaws.com/h...m_fullsize.jpg


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    Supporting Member mlochala's Avatar
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    mlochala's Tools
    Looks very dusty in there.

  8. #277
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    That will be the oxide layer. Steam strips every last molecule of preservative from the surface of the steel. But the hot dry environment prevents corrosion forming. So you just get that thin layer of oxide that forms very quickly when the system is depressurized and moisture forms on the surface. A bit like degreasing steel with acid. If you dont apply something to the surface rust will form in minutes

  9. #278
    Supporting Member hemmjo's Avatar
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    hemmjo's Tools
    Not sure what I am looking at in regard to the steam drum. Is that the inside of something like this?

    High-quality black-and-white photographs of large old machines and tools-drax_power_station_boiler.jpg
    High-quality black-and-white photographs of large old machines and tools-water_tube_boiler_schematic.png

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  11. #279
    Supporting Member jdurand's Avatar
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    I figured we were looking at the flame chamber and the water was along the sides. ??

  12. #280
    Jon
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    Steam condenser inside a generating station. 1943.

    Fullsize image: https://s3-us-west-1.amazonaws.com/h...r_fullsize.jpg



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