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  2. Window screen - Wikipedia

    en.wikipedia.org/wiki/Window_screen

    A window screen (also known as insect screen, bug screen, fly screen, flywire, wire mesh, or window net) is designed to cover the opening of a window. It is usually a mesh made of metal, fibreglass , plastic wire, or other pieces of plastic and stretched in a frame of wood or metal.

  3. Current sensing - Wikipedia

    en.wikipedia.org/wiki/Current_sensing

    Fluxgate sensors or saturable inductor current sensors work on the same measurement principle as Hall-effect-based current sensors: the magnetic field created by the primary current to be measured is detected by a specific sensing element. The design of the saturable inductor current sensor is similar to that of a closed-loop Hall-effect ...

  4. Wiegand effect - Wikipedia

    en.wikipedia.org/wiki/Wiegand_effect

    Besides sensors, the Wiegand effect is used for security keycard door locks. [7] The plastic keycard has a series of short lengths of Wiegand wire embedded in it, which encodes the key by the presence or absence of wires. A second track of wires provides a clock track. The card is read by pulling it through a slot in a reader device, which has ...

  5. Hall effect sensor - Wikipedia

    en.wikipedia.org/wiki/Hall_effect_sensor

    Hall effect current sensor with internal integrated circuit amplifier. 8 mm opening. Zero current output voltage is midway between the supply voltages that maintain a 4 to 8-volt differential. The non-zero current response is proportional to the voltage supplied and is linear to 60 amperes for this particular (25 A) device.

  6. Safety glass - Wikipedia

    en.wikipedia.org/wiki/Safety_glass

    Wire-mesh-reinforced glass in the Lloyd's Building. Wire mesh glass (also known as Georgian Wired Glass) has a grid or mesh of thin metal wire embedded within the glass. Wired glass is used in the US for its fire-resistant abilities, and is well-rated to withstand both heat and hose streams. This is why wired glass exclusively is used on ...

  7. Mesh - Wikipedia

    en.wikipedia.org/wiki/Mesh

    A tea strainer made of metal mesh Metal screen mesh A watch with a stainless steel mesh bracelet. A mesh is a barrier made of interlaced strands of metal, fiber or other flexible or ductile materials. A mesh is similar to a web or a net in that it has many interwoven strands.

  8. Screen-door effect - Wikipedia

    en.wikipedia.org/wiki/Screen-door_effect

    The screen-door effect (SDE) is a visual artifact of displays, where the fine lines separating pixels (or subpixels) become visible in the displayed image. This effect can be seen in digital projector images and regular displays under magnification or at close range, but the increases in display resolutions have made this much less significant.

  9. Motion detector - Wikipedia

    en.wikipedia.org/wiki/Motion_detector

    A motion detector attached to an outdoor, automatic light. A motion detector is an electrical device that utilizes a sensor to detect nearby motion (motion detection).Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.

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