parallax
视差,视差法,视差仪,视角
Definitions
- 1
- : the apparent displacement of an observed object due to a change in the position of the observer.
- : Astronomy. the apparent angular displacement of a celestial body due to its being observed from the surface instead of from the center of the earth or due to its being observed from the earth instead of from the sun .Compare parallactic ellipse.
- : the difference between the view of an object as seen through the picture-taking lens of a camera and the view as seen through a separate viewfinder.
- : an apparent change in the position of cross hairs as viewed through a telescope, when the focusing is imperfect.
- : Digital Technology. a 3D effect observed when images and other elements in the foreground of a screen move at a different rate than those in the background: parallax scrolling;Does this phone have parallax?
Examples
One of the biggest sources of that uncertainty has been the distances to nearby stars — distances that the new parallax data appears to all but nail down.
Although a series of papers by Madore and Freedman’s team aren’t expected for a few weeks, they noted that the new parallax data and correction formula appear to work well.
The astronomer Tycho Brahe didn’t detect any such stellar parallax and thereby concluded that Earth does not move.
Worse, this parallax “offset” depends in complicated ways on objects’ positions, colors and brightness.
They couldn't measure the parallax to the nearest star, so they would have no idea of stellar distances.
The most obvious and direct method is to determine the parallactic motion of the stars of known parallax.
The parallax decreases as the distance of the body increases.
Life becomes awful by its reaches: its span from zenith to nadir, by moral parallax.
The efforts to discover stellar parallax were, of course, still continued.