Search results
Results From The WOW.Com Content Network
A truly dark sky has a surface brightness of 2 × 10 −4 cd m −2 or 21.8 mag arcsec −2. [9] [clarification needed] The peak surface brightness of the central region of the Orion Nebula is about 17 Mag/arcsec 2 (about 14 milli nits) and the outer bluish glow has a peak surface brightness of 21.3 Mag/arcsec 2 (about 0.27 millinits). [10]
Automatic systems for activating the headlamps have been available since the mid-1950s, originally only on luxury American models such as Cadillac's Twilight Sentinel, Lincoln, and Imperial. [138] Basic implementations turn the headlights on at dusk and off at dawn. Modern implementations use sensors to detect the amount of exterior light.
The promoted Surface Dial's purpose is to be used to control functions that artists might find useful, such as pen color or thickness. The Surface Dial is set with standard commands that can be used without being program or app specific. [27] These commands include toggling sound volume, scrolling, zooming, brightness, and undo/redo.
The following is a list of vehicles that feature hidden headlamps (also called pop-up headlights). [1] The vast majority of hidden headlamps are on cars, however, there are a handful of vehicles included in the list that do not fit this category.
For many years, turn signals' on-off operation was activated by a thermal flasher unit which used a heating element, leaf spring, and a bimetallic strip. When activated by the stalk switch on the steering column, the signal lights and heating element turned on. The heat caused the bimetallic strip to bend such that it threw the leaf spring over ...
You've Got Mail!® Millions of people around the world use AOL Mail, and there are times you'll have questions about using it or want to learn more about its features. That's why AOL Mail Help is here with articles, FAQs, tutorials, our AOL virtual chat assistant and live agent support options to get your questions answered.
Toggle each phone setting (such as Wi-Fi, Bluetooth, Auto-brightness, etc.) on or off; Launch or "kill" a specific app (killing an app requires rooted device) Set the audio volume to a specified value; Lock an application with a PIN code; Read, write, copy, move, and delete a file on the user's device
An EL film is a so-called Lambertian radiator: unlike with neon lamps, filament lamps, or LEDs, the brightness of the surface appears the same from all angles of view; electroluminescent light is not directional. The light emitted from the surface is perfectly homogeneous and is well-perceived by the eye.