Diapositive 1

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We start with the determination of the uncertainty of the net
charge M = (M*-M0)
2
2
2 2
0
0
2 2
0
( ) ( *) ( )
*
( *) ( )
c
M M
u M u M u M
M M
u M u M
     
= + +    
     
= + +
( )
5 2
2
1
1
( *) * * 0.03852
5 4 k
k
u s M M M
=
= + = − =
 
Charge M* is measured 5 times:
9.84, 9.99, 10.04, 9.98, and 10.06 [nC]
M* is of type A uncertainty
That means that the uncertainty must be obtained
from the positive root of the variance of the mean
value of M * (which is the standard deviation)