| 单词 | parallax |
| 释义 | parallax (once / 11236 pages) n Parallax is how an object's position seems to shift, the way a person appears to move when you alternate looking through a camera viewfinder and using just your eyes. You can get an idea of what parallax is by closing first one eye and then the other; the object you're focused on seems to move slightly. Parallax also describes the way that objects appear different depending on where an observer is located. It's a concept that helps astronomers measure the distances between planets, stars, and moons. The root word is Greek, parallaxis, meaning "a change." WORD FAMILYparallax: parallaxes USAGE EXAMPLESIf users do want to move away from Yahoo after recent breaches, news site The Parallax recently wrote advice on how to do this. BBC(Dec 15, 2016) Lonergan said, using that last word often and as a kind of parallax; competing views on hopelessness is the animating force of all his movies. Los Angeles Times(Nov 04, 2016) But the field sputtered in the 1960s, when scientists reached the smallest parallaxes that Earth-based telescopes could measure, stymied by interference from our rippling atmosphere. National Geographic(Sep 14, 2016) n the apparent displacement of an object as seen from two different points that are not on a line with the object Hypo|Hyper annual parallax, heliocentric parallax the parallax of a celestial body using two points in the earth's orbit around the sun as the baseline diurnal parallax, geocentric parallaxthe parallax of a celestial body using two points on the surface of the earth as the earth rotates stellar parallaxthe heliocentric parallax of a star horizontal parallaxthe maximum parallax observed when the celestial body is at the horizon solar parallaxthe angle subtended by the mean equatorial radius of the Earth at a distance of one astronomical unit optical phenomenon a physical phenomenon related to or involving light |
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