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Optical Circulator symbol. An optical circulator is a three- or four-port optical device designed such that light entering any port exits from the next. This means that if light enters port 1 it is emitted from port 2, but if some of the emitted light is reflected back to the circulator, it does not come out of port 1 but instead exits from port 3.
Cockpit of an IAR 80 fighter fitted with a I.O.R. Telereflex reflector sight. The company was established in 1936 as a joint-venture between the Romanian industrialists Nicolae Malaxa and Max Auschnitt, engineer Petre Carp, with participation from the French companies Optique & Précision de Levallois and Bernard-Turnne.
The Lockheed P-3 Orion is a four-engined, turboprop anti-submarine and maritime surveillance aircraft developed for the United States Navy and introduced in the 1960s. Lockheed based it on the L-188 Electra commercial airliner; it is easily distinguished from the Electra by its distinctive tail stinger or "MAD" boom, used for the magnetic anomaly detection (MAD) of submarines.
rule used to assess optic disc appearance K: Keratometry OS oculus sinister (left eye) LHyperT or LHT: Left hypertropia LHypoT: Left hypotropia LO: Lenticular opacity L/R FD: L/R fixation disparity L/R: L hyperphoria Left ET: Left esotropia LVA: Low vision aid MDU: Mallett distance unit MNU: Mallett near unit M.Wing: Maddox Wing: MR: Maddox rod ...
A Fata Morgana seen over the Baltic Sea, 2016. The mirage consists of multiple upright and inverted images over the original object. A Fata Morgana of a container ship seen off the coast of Oceanside, California A Fata Morgana changing the shape of a distant boat
A U.S. bankruptcy judge on Wednesday blocked a settlement between families who have sued Alex Jones over his false claims about the 2012 Sandy Hook Elementary School mass shooting, saying their ...
An atmospheric river is slamming portions of California, with multiple inches of rain expected to drench the area until the storm runs out of moisture Wednesday morning, forecasters say. According ...
Wall Street's main indexes were subdued in choppy trading on Wednesday, as investors anticipated an interest rate cut from the Federal Reserve in its final meeting of the year and awaited clues on ...