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2. Light tube - Wikipedia

   en.wikipedia.org/wiki/Light_tube

   Light transmission efficiency is greatest if the tube is short and straight. In longer, angled, or flexible tubes, part of the light intensity is lost. To minimize losses, a high reflectivity of the tube lining is crucial; manufacturers claim reflectivities of their materials, in the visible range, of up to almost 99.5 percent. [10] [11]

3. Counter-beam lighting - Wikipedia

   en.wikipedia.org/wiki/Counter-beam_lighting

   Light beam from road tunnel fixture inclined towards approaching vehicle such that contrast is enhanced of obstacle on road. Counter-beam lighting (German: Gegenstrahlbeleuchtung) is a type of road lighting used mainly in road tunnels, providing best visibility of obstacles on the lane, and thus traffic safety, while reducing light-energy cost.

4. Skylight - Wikipedia

   en.wikipedia.org/wiki/Skylight

   Solar tubes, sun tunnels, or tubular skylights consist of a roof-mounted fixed unit skylight element, condensing sunlight, distributed by a light conveying optic conduit to a light diffusing element. [3] Being small in diameter, they can be used for daylighting smaller spaces such as hallways, and bounce light in darker corners of spaces. TDDs ...

5. Daylighting (architecture) - Wikipedia

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

   The human eye's response to light is non-linear, so a more even distribution of the same amount of light makes a room appear brighter. The source of all daylight is the Sun. The proportion of direct to diffuse light impacts the amount and quality of daylight. [1] "Direct sunlight" reaches a site without being scattered within Earth's atmosphere.

6. Daytime running lamp - Wikipedia

   en.wikipedia.org/wiki/Daytime_running_lamp

   Full-voltage vs. parking light headlamp on European-market Volkswagen, 2007. Depending on prevailing regulations and equipment, vehicles may implement the daytime-running light function by functionally turning on specific lamps, by operating low-beam headlamps or fog lamps at full or reduced intensity, by operating high-beam headlamps at reduced intensity, or by steady-burning operation of the ...

7. Eagle bus - Wikipedia

   en.wikipedia.org/wiki/Eagle_Bus

   The largest external difference was a new design for the six-piece windshield because drivers complained that the original design had them baking in the Texas sun even with air conditioning. They were part of an order for 185 highway coaches manufactured under a contract with Continental Trailways.