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Rev. Notes > AS > Measuring techniques
 
 
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Topics
 
Measurements Errors Random error
Systematic error Uncertainty Total uncertainity in addition / subtraction
Total uncertainty in multiplication and division Total uncertainty in power factor Total uncertainty in the average value of many measurements
Total uncertainty in the timing experiment Total uncertainty in the timing experiment Example 1 - Calculation of uncertainty
Least count Spring Balance Digital Balance
Protractor Micrometer Vernier calliper
Digital Ammeter Cathode Ray Osciloscope
 

Errors

All physical measurements are uncertain or imprecise to some extent. It is very difficult to eliminate all possible errors or uncertainties in a measurement. The error may occur due to

(1) negligence or inexperience of a person

(2) the faulty apparatus

(3) inappropriate method or technique.

The uncertainty may occur due to inadequacy or limitation of an instrument, natural variations of the object being measured or natural imperfections of a person’s senses. However, the uncertainty is also usually described as an error in a measurement. There are two major types of errors.

 
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View Comments on this Chapter - Total Comments (2)
 
unknown Said :
^to calculate the radius, diameter needs to be divided by 2. thus, 1.22/2 = 0.61
 
  02/01/15 12:33 AM
   
Bilal Said :
where did 0.6 come from in result
 
  09/09/14 02:51 PM
 

 

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