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2. Transmissometer - Wikipedia

   en.wikipedia.org/wiki/Transmissometer

   In a transmissometer the extinction coefficient is determined by measuring direct light transmissivity, and the extinction coefficient is then used to calculate visibility range. [ 2 ] Atmospheric extinction is a wavelength dependent phenomenon, but the most common wavelength in use for transmissometers is 550 nm , which is in the middle of the ...

3. Visibility - Wikipedia

   en.wikipedia.org/wiki/Visibility

   The international definition of fog is a visibility of less than 1 km (3,300 ft); mist is a visibility of between 1 km (0.62 mi) and 2 km (1.2 mi) and haze from 2 km (1.2 mi) to 5 km (3.1 mi). Fog and mist are generally assumed to be composed principally of water droplets, haze and smoke can be of smaller particle size.

4. Visibility (geometry) - Wikipedia

   en.wikipedia.org/wiki/Visibility_(geometry)

   In geometry, visibility is a mathematical abstraction of the real-life notion of visibility. Given a set of obstacles in the Euclidean space , two points in the space are said to be visible to each other, if the line segment that joins them does not intersect any obstacles.

5. AOL Video - Serving the best video content from AOL and ...

   www.aol.com/video/view/how-to-play-baseball...

   The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

6. Viewshed analysis - Wikipedia

   en.wikipedia.org/wiki/Viewshed_Analysis

   To determine the visibility of a target cell, each cell between the viewpoint cell and target cell is examined for line of sight. Where cells of higher value are between the viewpoint and target cells the line of sight is blocked. If the line of sight is blocked then the target cell is determined to not be part of the viewshed.

7. Radiosity (computer graphics) - Wikipedia

   en.wikipedia.org/wiki/Radiosity_(computer_graphics)

   r is the distance between x and x' θ x and θ x' are the angles between the line joining x and x' and vectors normal to the surface at x and x' respectively. Vis(x,x' ) is a visibility function, defined to be 1 if the two points x and x' are visible from each other, and 0 if they are not. The geometrical form factor (or "projected solid angle ...

8. Baseball cap - Wikipedia

   en.wikipedia.org/wiki/Baseball_cap

   A New York Yankees baseball cap. A baseball cap is a type of soft hat with a rounded crown and a stiff bill [1] projecting in front. [2]The front of the hat typically displays a design or a logo (historically, usually only a sports team, namely a baseball team, or names of relevant companies, when used as a commercial marketing technique).

9. Lead off - Wikipedia

   en.wikipedia.org/wiki/Lead_off

   In baseball, to lead off, or to take a lead, refers to the position a baserunner takes just prior to a pitch, a short distance away from the base the player occupies. [2] A "lead" can also refer to that distance. [2] A typical lead is six to ten feet (two to three meters) from the base. If the lead is too large, the runner risks being picked off.