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2. 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.

3. Twilight - Wikipedia

   en.wikipedia.org/wiki/Twilight

   [1] [failed verification] At nautical dawn and nautical dusk, the human eye finds it difficult, if not impossible, to discern traces of illumination near the sunset or sunrise point of the horizon (first light after nautical dawn but before civil dawn and nightfall after civil dusk but before nautical dusk). [citation needed]

4. 40 Secret Santa gift ideas for every type of person you know

   www.aol.com/lifestyle/secret-santa-gift-ideas...

   Relieve tension and melt away stress with Amazon's No. 1 best-selling foot massager. ... These ones from Sunbeam are made with a color-changing LED light that automatically turns on from dusk to ...

5. Dawn simulation - Wikipedia

   en.wikipedia.org/wiki/Dawn_simulation

   A dawn simulator can be used as an alarm clock. Light enters through the eyelids triggering the body to begin its wake-up cycle, including the release of cortisol, so that by the time the light is at full brightness, sleepers wake up on their own, without the need for an alarm. Most commercial alarm clocks include a "dusk" mode as well for bedtime.

6. 8 of the Best LED Christmas Lights to Jazz Up Your Roof, Tree ...

   www.aol.com/8-best-led-christmas-lights...

   LED lights are also brighter than your standard Christmas lights, which can be a draw for some, but some do come with dimming capabilities for sensitive eyes (or neighbors), like the Ollny color ...

7. The 8 Best Indoor Grow Lights to Help Your Plants ... - AOL

   www.aol.com/lifestyle/8-best-indoor-grow-lights...

   4. Root Farm All-Purpose LED Grow Light. Best for Starting Seeds. Starting plants from seed lets you get a jumpstart on the growing season, so your plants are ready to go in the ground as soon as ...