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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

   In meteorology, visibility is the measure of the distance at which an object or light can be clearly discerned. It depends on the transparency of the surrounding air and as such, it is unchanging no matter the ambient light level or time of day.

4. Radar cross section - Wikipedia

   en.wikipedia.org/wiki/Radar_cross_section

   The scattering of incident radar power by a radar target is never isotropic (even for a spherical target), and the RCS is a hypothetical area. In this light, RCS can be viewed as a correction factor that makes the radar equation "work out right" for the experimentally observed ratio of /. However, RCS is a property of the target alone and may ...

5. Retroreflective sheeting - Wikipedia

   en.wikipedia.org/wiki/Retroreflective_sheeting

   Retroreflective sheeting is flexible retroreflective material primarily used to increase the nighttime conspicuity of traffic signs, high-visibility clothing, and other items so they are safely and effectively visible in the light of an approaching driver's headlamps. They are also used as a material to increase the scanning range of barcodes ...

6. 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.

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

8. Ambient occlusion - Wikipedia

   en.wikipedia.org/wiki/Ambient_occlusion

   In 3D computer graphics, modeling, and animation, ambient occlusion is a shading and rendering technique used to calculate how exposed each point in a scene is to ambient lighting. For example, the interior of a tube is typically more occluded (and hence darker) than the exposed outer surfaces, and becomes darker the deeper inside the tube one ...

9. Parents charged with abuse after child's botched circumcision ...

   www.aol.com/parents-charged-abuse-childs-botched...

   A couple has been arrested after authorities say they performed a botched circumcision on their son at their central Missouri home last week. Prosecutors charged Tyler Wade Gibson, 35, with one ...