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  2. Sightline (architecture) - Wikipedia

    en.wikipedia.org/wiki/Sightline_(architecture)

    Sightline criteria in theaters can include: the "isacoustic curve" [4] [5] [6] defined by John Scott Russell in 1838 and applied at the Auditorium Building in Chicago and the Emery Theatre in Cincinnati; alternate row sightlines where each patron sees between the heads of patrons in the row in front and over the heads of patrons in the second ...

  3. Taylor Swift and Beyoncé fans speak out about sale of ... - AOL

    www.aol.com/taylor-swift-beyonc-fans-speak...

    In clips shared from Swift’s recent shows, fans in obstructed view seats were positioned directly behind the main stage, meaning many could only see the “Look What You Made Me Do” singer ...

  4. Non-line-of-sight propagation - Wikipedia

    en.wikipedia.org/wiki/Non-line-of-sight_propagation

    By definition, line of sight is the visual line of sight, that is determined by the ability of the average human eye to resolve a distant object. Our eyes are sensitive to light but optical wavelengths are very short compared to radio wavelengths.

  5. Line of sight - Wikipedia

    en.wikipedia.org/wiki/Line_of_sight

    Sightline (architecture) Line-of-sight fire, shooting directly at a visible target on a relatively flat trajectory.The target is in the line of sight of the sighting device and the rifleman's rule applies.

  6. Windshield obstruction laws - Wikipedia

    en.wikipedia.org/wiki/Windshield_obstruction_laws

    Pennsylvania windshield obstructions are covered under Title 75, §4524 : "Obstruction on front windshield.--No person shall drive any motor vehicle with any sign, poster or other nontransparent material upon the front windshield which materially obstructs, obscures or impairs the driver's clear view of the highway or any intersecting highway except an inspection certificate, sticker ...

  7. Iceland spar - Wikipedia

    en.wikipedia.org/wiki/Iceland_spar

    Iceland spar, possibly the Icelandic medieval sun stone used to locate the sun in the sky when obstructed from view [43] Iceland spar has been historically used in telecommunications due to its unique optical properties. [44]

  8. Obstruction - Wikipedia

    en.wikipedia.org/wiki/Obstruction

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  9. Standing-room only - Wikipedia

    en.wikipedia.org/wiki/Standing-room_only

    By contrast, standing room tickets are rare at major sports stadiums in the United States and Canada, with only the Dallas Cowboys' AT&T Stadium, the Philadelphia Eagles' Lincoln Financial Field and the Hamilton Tiger-Cats' Tim Hortons Field having such permanent arrangements, though they are usually marketed as part of a 'party deck' where the ...