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There is no such way to avoid parallax error, you just have to be careful.. :)
That's great I have learned something new
It should be in the same horizontal line as the meniscus of the liquid
Parallax Error Beheads You was created on 2008-10-20.
The difference between an actual correct view and a displaced visual parallax error
Zero error and parallax error
parallax error - reading of volume of burette
simply speaking, systematic errors are those you can improve on( so if you have a systematic error, its probably your fault). Random errors are unpredictable and cannot be corrected. A parallax error can be corrected by you and if there is a parallax error, its probably your fault.
Parallax error is the most common source of both systematic and instantaneous anomaly in experiments involving analogue measurement and great care should be taken to avoid it when recording data, supported also by repetition of each independent variable data collection stage.
1. to avoid parallax error 2. to easily distinguish between shallow and deep pockets
No
in optical instruments,while measuring the lenght,the object and the image must overlap,if not it would show parallax error.