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2. Navigation light - Wikipedia

   en.wikipedia.org/wiki/Navigation_light

   Watercraft navigation lights must permit other vessels to determine the type and relative angle of a vessel, and thus decide if there is a danger of collision. In general, sailing vessels are required to carry a green light that shines from dead ahead to 2 points (22 + 1 ⁄ 2 °) abaft [note 1] the beam on the starboard side (the right side from the perspective of someone on board facing ...

3. Lighthouse - Wikipedia

   en.wikipedia.org/wiki/Lighthouse

   These lights are similar to obstruction lights used to warn aircraft of tall structures. Later innovations were "Vega Lights", and experiments with light-emitting diode (LED) panels. [23] LED lights, which use less energy and are easier to maintain, had come into widespread use by 2020.

4. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights, and LED-based Christmas lights Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in automotive brake lights and turn signals.

5. 30 Man-Made Innovations That Were Designed Mimicking ... - AOL

   www.aol.com/30-objects-were-directly-inspired...

   Just like beavers, the athletes would be kept warm by air trapped on the exterior of the suit. ... #12 LED Light Bulbs. ... These flippers serve as oars used in boats for movements. Flippers and ...

6. Glow stick - Wikipedia

   en.wikipedia.org/wiki/Glow_stick

   The light cannot be turned off and can be used only once. The used tube is then thrown away. Glow sticks are often used for recreation, such as for events, camping, outdoor exploration, and concerts. Glow sticks are also used for light in military and emergency services applications. Industrial uses include marine, transportation, and mining.

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   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.