Mydriasis (/máµ»ËdraÉª.ÉsÉªs/) is the dilation of the pupil, usually defined as when having a non-physiological cause, but sometimes defined as potentially being a physiological pupillary response. Non-physiological causes of mydriasis include disease, trauma, or the use of drugs. Normally, as part of the pupillary light reflex, the pupil dilates in the dark and constricts in the light to respectively improve vividity at night and to protect the retina from sunlight damage during the day.
The Cold War Museum. The Strategic Defense Initiative (SDI): Star Wars. The Strategic Defense Initiative (SDI), also known as Star Wars, was a program first initiated on March 23, 1983 under President Ronald Reagan. The intent of this program was to develop a sophisticated anti-ballistic missile system in order to prevent missile attacks from other countries, specifically the Soviet Union.
Eisenhower, president of the United States at the time of Sputnik's launch, was one of the few Americans who remained relatively unalarmed by Sputnik. He did little to acknowledge the achievements, and simply assured the public that the U.S. would soon launch a better satellite.putnik Plays a Significant Role in the Cold War. The Launch of Sputnik became a significant event in the Cold War, too. The U.S.S.R.'s ability to launch a heavy satellite led U.S. citizens to believe that the U.S.S.R. could launch inter-continental ballistic missiles (ICBMs) or intercontinental nuclear weapons.