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2. 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!

3. Ring flash - Wikipedia

   en.wikipedia.org/wiki/Ring_flash

   Closely related to the ring flash is the continuous ring light, which can produce a consistent level of light for video recording or to see a live preview before capturing photographs. Continuous ring lights are popular for improving picture quality on video calls, social media selfies, and video blogging. [ 1 ]

4. Luminous gemstones - Wikipedia

   en.wikipedia.org/wiki/Luminous_gemstones

   One of the monks stole it and fled into the night, but when he repented and promised to return it, the ring emitted a bright light by which he traveled to Perugia. The two cities fought fiercely for the possession of this sacred ring, but in 1486 the Vatican decreed the relic should be placed in the Perugia Cathedral (Ball 1938: 500).

5. Bloom (shader effect) - Wikipedia

   en.wikipedia.org/wiki/Bloom_(shader_effect)

   Bloom in digital cameras is caused by an overflow of charge in the photodiodes, which are the light-sensitive elements in the camera's image sensor. [3] When a photodiode is exposed to a very bright light source, the accumulated charge can spill over into adjacent pixels, creating a halo effect. This is known as "charge bleeding."

6. Newton's rings - Wikipedia

   en.wikipedia.org/wiki/Newton's_rings

   For illumination from above, with a dark center, the radius of the N th bright ring is given by = [()] /, where N is the bright-ring number, R is the radius of curvature of the glass lens the light is passing through, and λ is the wavelength of the light. The above formula is also applicable for dark rings for the ring pattern obtained by ...

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8. Airy disk - Wikipedia

   en.wikipedia.org/wiki/Airy_disk

   Thus the radius of the spurious disk of a faint star, where light of less than half the intensity of the central light makes no impression on the eye, is determined by [s = 1.17/a], whereas the radius of the spurious disk of a bright star, where light of 1/10 the intensity of the central light is sensible, is determined by [s = 1.97/a].

9. 22° halo - Wikipedia

   en.wikipedia.org/wiki/22°_halo

   The ice crystals in the clouds all deviate the light similarly, but only the ones from the specific ring at 22 degrees contribute to the effect for an observer at a set distance. As no light is refracted at angles smaller than 22°, the sky is darker inside the halo. [6]