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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.
Hubble Space Telescope. Seen in orbit from the departing Space Shuttle Atlantis in 2009, flying Servicing Mission 4 ( STS-125 ), the fifth and final Hubble mission. The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
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. Lidar may operate in a fixed direction (e ...
Hulu (/ ˈ h uː l uː /, styled hulu in its logo) is an American subscription streaming media and content hub within the Disney+ streaming service owned by The Walt Disney Company.It was launched on October 29, 2007. Hulu was initially established as a joint venture between News Corporation and NBCUniversal, Providence Equity, and later The Walt Disney Company, serving as an aggregation of ...
