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Refractive surgery. Refractive surgery is optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses. This can include various methods of surgical remodeling of the cornea ( keratomileusis ), lens implantation or lens replacement.
A telescope in the Very Large Telescope system producing four orange laser guide stars A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.The word laser is an anacronym that originated as an acronym for light amplification by stimulated emission of radiation.
Lidar ( / ˈlaɪdɑːr /, also LIDAR, LiDAR or LADAR, an acronym of "light detection and ranging" [1] or "laser imaging, detection, and ranging" [2]) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver.
Greta Tintin Eleonora Ernman Thunberg (Swedish pronunciation: [ˈɡrêːta ˈtʉ̂ːnbærj] ⓘ; born 3 January 2003) is a Swedish environmental activist known for challenging world leaders to take immediate action to mitigate the effects of human-caused climate change.[1] Thunberg's climate activism began when she persuaded her parents to ...
Amyotrophic lateral sclerosis ( ALS ), also known as motor neurone disease ( MND) or Lou Gehrig's disease in the United States, is a rare but terminal neurodegenerative disorder that results in the progressive loss of both upper and lower motor neurons that normally control voluntary muscle contraction. [3] ALS is the most common form of the ...
The Starry Night is an oil-on-canvas painting by the Dutch Post-Impressionist painter Vincent van Gogh, painted in June 1889. It depicts the view from the east-facing window of his asylum room at Saint-Rémy-de-Provence, just before sunrise, with the addition of an imaginary village.[1][2][3] It has been in the permanent collection of the ...
Aleister Crowley (/ ˈ æ l ɪ s t ər ˈ k r oʊ l i / AL-ist-ər KROH-lee; born Edward Alexander Crowley; 12 October 1875 – 1 December 1947) was an English occultist, philosopher, ceremonial magician, poet, painter, novelist and mountaineer.He founded the religion of Thelema, identifying himself as the prophet entrusted with guiding humanity into the Æon of Horus in the early 20th century.
