pa
ra
llax
Plural
parallaxes
1
the apparent displacement or difference in the apparent position of an object when viewed along two different lines of sight, often used in astronomy to measure the distance of nearby stars
- Astronomers use stellar parallax to measure the distances to nearby stars by observing their apparent shift against more distant background stars.
- The parallax of an object viewed with one eye and then the other creates the perception of depth or 3D vision.
- In surveying, the parallax in sighting between two points helps calculate the distance and elevation changes.
- As a spacecraft moves, the parallax of distant celestial objects helps determine its position and trajectory.
- Astronomers use the parallax method to estimate the distances to nearby galaxies, enhancing our understanding of the vastness of the universe.