The digital balance will be wrong by 0.02 g on every mass you measure and the force meter would be wrong by 1 N. This is one of the reasons why the measurement of parallax was.

Read the lower part of the curved surface of the liquid - the meniscus - to gain an accurate measurement and avoid parallax errors. Zero errors are caused by faulty equipment that doesn’t reset to zero properly.Ĭheck before you start measuring that the measuring instruments read zero for zero input.Ī zero error would affect every reading you take. Place your eye at the level of the appropriate measurement marking when measuring the level of a liquid in a graduated cylinder.

It can lead to the reading being too high or too low. Parallax error is caused by a student not reading the measurement at eye level. In essence, parallax is the perceived shifting phenomenon which occurs when an object is viewed from different positions. In astronomy, annual parallax is the only direct way to measure distance to stars outside the solar system. Reaction time error can sometimes be reduced by using light gates and electronic timing or sensors connected to a computer to record time taken for objects like paper cake cases to fall or a vehicle to move down a slope Parallax error Parallax is the perceived change in position of an object seen from two different places. Reaction time errors and parallax errors are examples of random errors. It is important to try to reduce or limit the effect of random errors in measuring. Random errors are errors made by the person carrying out the measuring, and are usually down to timing incorrectly, or reading the instrument incorrectly.

Parallax definition measurement