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  2. Grand Duchess Tatiana Nikolaevna of Russia - Wikipedia

    en.wikipedia.org/wiki/Grand_Duchess_Tatiana...

    The final entry in Tatiana's final notebook at Yekaterinburg was a saying she had copied from the words of a well-known Russian Orthodox holy man, Father Ioann of Kronstadt: "Your grief is indescribable, the Savior's grief in the Gardens of Gethsemane for the world's sins is immeasurable, join your grief to his, in it you will find consolation."

  3. Biological effects of high-energy visible light - Wikipedia

    en.wikipedia.org/wiki/Biological_effects_of_high...

    Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.

  4. List of idioms of improbability - Wikipedia

    en.wikipedia.org/wiki/List_of_idioms_of...

    "When Hell freezes over" [2] and "on a cold day in Hell" [3] are based on the understanding that Hell is eternally an extremely hot place. The "Twelfth of Never" will never come to pass. [4] A song of the same name was written by Johnny Mathis. "On Tibb's Eve" refers to the saint's day of a saint who never existed. [5] "When two Sundays come ...

  5. Does staring at screens ruin your eyes? - AOL

    www.aol.com/article/2014/02/27/does-staring-at...

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  6. Screen reading - Wikipedia

    en.wikipedia.org/wiki/Screen_reading

    Javal discovered that while reading, one's eyes tend to jump across the text in saccades, and stop intermittently along each line in fixations. [1] Because of the lack of technology at the time, naked-eye observations were used to observe eye movement , until later in the late 19th and mid-20th century eye-tracking experiments were conducted in ...

  7. Raygun Releases Statement on Olympics “Allegations” and ...

    www.aol.com/raygun-releases-statement-olympics...

    Raygun Releases Statement on Olympics AllegationsElsa - Getty Images. Raygun, the viral Australian Olympics breakdancer, has issued a statement amid a petition accusing her of “unethical conduct ...

  8. Autostereogram - Wikipedia

    en.wikipedia.org/wiki/Autostereogram

    The top and bottom images produce a dent or projection depending on whether viewed with cross- () or wall- () eyed vergence. An autostereogram is a two-dimensional (2D) image that can create the optical illusion of a three-dimensional (3D) scene. Autostereograms use only one image to accomplish the effect while normal stereograms require two.

  9. The dangers of LED face masks you should know about - AOL

    www.aol.com/lifestyle/dangers-led-face-masks...

    RELATED: What your eyes say about your health "Since patients oftentimes require multiple treatments and overexposure to this, light can be potentially dangerous to your vision," she continued. "I ...