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Artist's impression of Leonardo's method for neutralizing the refractive power of the cornea. Leonardo da Vinci is frequently credited with introducing the idea of contact lenses in his 1508 Codex of the eye, Manual D, [9] wherein he described a method of directly altering corneal power by either submerging the head in a bowl of water or wearing a water-filled glass hemisphere over the eye.
The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War
The bionic contact lens is a form of nanotechnology and microfabrication constructed of light emitting diodes, an antenna, and electronic circuit wiring. [32] The bionic contact lens is the 2008 creation of Iranian-American Babak Parviz, an electrical engineer at the University of Washington (UW) in Seattle. [33] [34] 2009 3-D camera
A relay is an electrical switch that opens and closes under the control of another electrical circuit. In the original form, the switch is operated by an electromagnet to open or close one or many sets of contacts. The relay was invented by the renowned American scientist, Joseph Henry in 1835. [73] 1836 Morse code
These volumes were outlines for a larger publication that was never produced, so his ideas never saw mass dissemination. [50] Between the 11th and 13th centuries, so-called "reading stones" were invented. Often used by monks to assist in illuminating manuscripts, these were primitive plano-convex lenses, initially made by cutting a glass sphere ...
The timeline of historic inventions is a chronological list of particularly significant technological inventions and their inventors, where known. [ a ] The dates in this article make frequent use of the units mya and kya , which refer to millions and thousands of years ago, respectively.
500 BC – Pills were used. They were presumably invented so that measured amounts of a medicinal substance could be delivered to a patient. 510–430 BC – Alcmaeon of Croton scientific anatomic dissections. He studied the optic nerves and the brain, arguing that the brain was the seat of the senses and intelligence.
The Photo History Timeline Collection; In the eye of the camera — Illustrated historical essay about early photography; Lippmann's and Gabor's Revolutionary Approach to Imaging; The Digital Camera Museum with accurate history section and many rare items Archived 2017-02-16 at the Wayback Machine; The Fascinating Timeline of Photography Technology