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  2. Galling - Wikipedia

    en.wikipedia.org/wiki/Galling

    The damage on the metal sheet, wear mode, or characteristic pattern shows no breakthrough of the oxide surface layer, which indicates a small amount of adhesive material transfer and flattening damage of the sheet's surface. This is the first stage of material transfer and galling build-up.

  3. Wikipedia:Picture peer review/4 Stroke Engine - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Picture_peer...

    Not sure that any of that should go beyond the engine anyway, as it suggests it's coming/going straight from the external air rather than through the (unshown) manifolds - the way the existing one works suggests that it's the diagram that stops there rather than the engine itself (does that make sense?). Maybe the arrows come in a little quick ...

  4. Vignetting - Wikipedia

    en.wikipedia.org/wiki/Vignetting

    Mechanical vignetting occurs when light beams emanating from object points located off-axis (laterally or vertically off from the optical axis of an optical system under consideration) are partially blocked by external objects of the optical system such as thick or stacked filters, secondary lenses, and improper lens hoods.

  5. Exploded-view drawing - Wikipedia

    en.wikipedia.org/wiki/Exploded-view_drawing

    An exploded-view drawing is a diagram, picture, schematic or technical drawing of an object, that shows the relationship or order of assembly of various parts. [1]It shows the components of an object slightly separated by distance, or suspended in surrounding space in the case of a three-dimensional exploded diagram.

  6. Component parts of internal combustion engines - Wikipedia

    en.wikipedia.org/wiki/Component_parts_of...

    Insufficient lubrication subjects the parts of the engine to metal-to-metal contact, friction, heat build-up, rapid wear often culminating in parts becoming friction welded together e.g. pistons in their cylinders. Big end bearings seizing up will sometimes lead to a connecting rod breaking and poking out through the crankcase.

  7. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    An example spangram with corresponding theme words: PEAR, FRUIT, BANANA, APPLE, etc. Need a hint? Find non-theme words to get hints. For every 3 non-theme words you find, you earn a hint.

  8. Video captures moment when semi-truck spins out of control on ...

    www.aol.com/news/video-captures-moment-semi...

    Fudge told Storyful she was recording a different car crash when the truck started sliding over. Fortunately, she and her family made it home safely.

  9. Microscopy - Wikipedia

    en.wikipedia.org/wiki/Microscopy

    Antonie van Leeuwenhoek (1632–1723). The field of microscopy (optical microscopy) dates back to at least the 17th-century.Earlier microscopes, single lens magnifying glasses with limited magnification, date at least as far back as the wide spread use of lenses in eyeglasses in the 13th century [2] but more advanced compound microscopes first appeared in Europe around 1620 [3] [4] The ...