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  2. Optical contact bonding - Wikipedia

    en.wikipedia.org/wiki/Optical_contact_bonding

    Optical contact bonding. Gauge blocks wrung together and held horizontally. The blocks are held together solely by the adhesion of their extremely flat surfaces, which is so strong that it easily supports their weight. Optical contact bonding is a glueless process whereby two closely conformal surfaces are joined, being held purely by ...

  3. Optical bonding - Wikipedia

    en.wikipedia.org/wiki/Optical_bonding

    Optical bonding is the use of an optical-grade adhesive to glue a glass to the top surface of a display. The main goal of optical bonding is to improve the display performance under outdoor environments. This method eliminates the air gap between the cover glass and the display. [2] Moreover, anti-reflective coating is often used in optical ...

  4. Liquid optically clear adhesive - Wikipedia

    en.wikipedia.org/wiki/Liquid_optically_clear...

    Liquid optically clear adhesive. Liquid optically-clear adhesive ( LOCA) is liquid-based bonding technology used in touch panels and display devices to bind the cover lens, plastic, or other optical materials to the main sensor unit or each other. These adhesives improve optical characteristics and durability.

  5. Contact angle - Wikipedia

    en.wikipedia.org/wiki/Contact_angle

    The contact angle (symbol θC) is the angle between a liquid surface and a solid surface where they meet. More specifically, it is the angle between the surface tangent on the liquid– vapor interface and the tangent on the solid–liquid interface at their intersection. It quantifies the wettability of a solid surface by a liquid via the ...

  6. Cold welding - Wikipedia

    en.wikipedia.org/wiki/Cold_welding

    Cold welding. Cold welding or contact welding is a solid -state welding process in which joining takes place without fusion or heating at the interface of the two parts to be welded. Unlike in fusion welding, no liquid or molten phase is present in the joint. Cold welding was first recognized as a general materials phenomenon in the 1940s.

  7. Index-matching material - Wikipedia

    en.wikipedia.org/wiki/Index-matching_material

    Index-matching material. In optics, an index-matching material is a substance, usually a liquid, cement (adhesive), or gel, which has an index of refraction that closely approximates that of another object (such as a lens, material, fiber-optic, etc.). When two substances with the same index are in contact, light passes from one to the other ...

  8. Gauge block - Wikipedia

    en.wikipedia.org/wiki/Gauge_block

    Gauge block. Gauge blocks (also known as gage blocks, Johansson gauges, slip gauges, or Jo blocks) are a system for producing precision lengths. The individual gauge block is a metal or ceramic block that has been precision ground and lapped to a specific thickness. Gauge blocks come in sets of blocks with a range of standard lengths.

  9. How long can a debt collector pursue old debt?

    www.aol.com/finance/long-debt-collector-pursue...

    The amount of time that a debt collector can legally pursue old debt varies by state and type of debt but can range between three and 20 years. Each state has its own statute of limitations on ...

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