parallax error

The parallax error can occur in measurement when an instrument is viewed from different angles. If the distance between the instrument and the observer is large and the instrument is not aligned perpendicular to the line of sight, a apparent shift in the measurement can occur. This can lead to inaccurate or incorrect measurement results.

An example of the parallax error in measurement is reading analog instruments, such as pointers on a gauge. If the observer does not look directly perpendicular to the instrument, the position of the pointer can be misread, leading to an erroneous measurement.

To minimize the parallax error in measurement, digital instruments are often used since they provide a direct numerical display. The readings can be viewed from different angles without causing an error since the display always remains the same. However, when using analog instruments, the parallax error can be minimized by properly aligning the instrument and reading it from a perpendicular position.

In measurement, it is important to consider the parallax error to ensure accurate readings. Precise alignment of the instrument and accurate reading from a perpendicular position can help minimize the parallax error and lead to an accurate measurement.