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  2. Sea chest (nautical) - Wikipedia

    en.wikipedia.org/wiki/Sea_chest_(nautical)

    The sea chest provides an intake reservoir from which piping systems draw raw water. Most sea chests are protected by removable gratings, and contain baffle plates to dampen the effects of vessel speed or sea state. The intake size of sea chests varies from less than 10 cm 2 to several square metres. [1]

  3. Seaman's chest - Wikipedia

    en.wikipedia.org/wiki/Seaman's_chest

    Seaman's chests at the Åland Maritime Museum in Finland Seaman's chests from Sild island with the Dannebrog og North Frisias flag. A seaman's chest is a wooden chest which was commonly used by sailors to store personal belongings. They are also known as sea chests, not to be confused with the recesses found in the hull of certain ships.

  4. Unsharp masking - Wikipedia

    en.wikipedia.org/wiki/Unsharp_masking

    Unsharp masking (USM) is an image sharpening technique, first implemented in darkroom photography, but now commonly used in digital image processing software. Its name derives from the fact that the technique uses a blurred , or "unsharp", negative image to create a mask of the original image.

  5. Sharpening - Wikipedia

    en.wikipedia.org/wiki/Sharpening

    A hand-held tungsten carbide knife sharpener, with a finger guard, can be used for sharpening plain and serrated edges on pocket knives and multi-tools.. Sharpening is the process of creating or refining a blade, the edge joining two non-coplanar faces into a converging apex, thereby creating an edge of appropriate shape on a tool or implement designed for cutting.

  6. Marine radar - Wikipedia

    en.wikipedia.org/wiki/Marine_radar

    Most merchant ships carry at least one of each type to ensure adequate target detection and response. [1] For example, the S-band operates better in sea clutter and rain than the X-band, however, the X-band has greater definition and accuracy in clear weather. [1] Radar is a vital navigation component for safety at sea and near the shore.

  7. Knife sharpening - Wikipedia

    en.wikipedia.org/wiki/Knife_sharpening

    Knife sharpening is the process of making a knife or similar tool sharp by grinding against a hard, rough surface, typically a stone, [1] or a flexible surface with hard particles, such as sandpaper. Additionally, a leather razor strop, or strop, is often used to straighten and polish an edge. The trade or occupation is called knifegrinder or ...

  8. Leveling and sharpening - Wikipedia

    en.wikipedia.org/wiki/Leveling_and_Sharpening

    Leveling and sharpening are two functions that are automatic and exist within memory. Sharpening is usually the way people remember small details in the retelling of stories they have experienced or are retelling those stories. Leveling is when people keep out parts of stories and try to tone those stories down so that some parts are excluded ...

  9. Dehiscence (botany) - Wikipedia

    en.wikipedia.org/wiki/Dehiscence_(botany)

    Some fruits are indehiscent, and do not open to disperse the seeds. Xerochasy is dehiscence that occurs upon drying, and hygrochasy is dehiscence that occurs upon wetting, the fruit being hygroscopic. Dehiscent fruits that are derived from one carpel are follicles or legumes, and those derived from multiple carpels are capsules or siliques. [3]