A Theory of the Hall Effect and the Related Effect for by Hall E. H.

By Hall E. H.

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As a result of weighing, and if we have no additional (or contradictory) information, we can assume that the uncertainty stated is the probable uncertainty corresponding to the 1σ uncertainty (as introduced at the beginning of this chapter). 004 g with a probability of 68%. Significant Figures (Implicit Quotation) When we come across scientifically relevant data (best estimates) without explicit uncertainties, we can get a rough idea of the uncertainty by examining the digits given, supposing that for the numbers given only significant figures are stated, and that no significant figures are left out.

1. This quantity Sm is the external uncertainty ∆yi of each data value. 9, obtained by division of Sm by 12. 13) may be applied. 29%. Normally one would not attempt to find the cause of the variation within this time series from which the external uncertainty is derived. Most people would just assume that the measurement is the reason for this uncertainty. However, as we will see in Sect. 1, this specific uncertainty is not caused at all by the experiment but is the consequence of the probabilistic nature of the true value.

Both effects make radiation from radioactive sources arrive at the detector position randomly in time. As will be shown below, the frequency distribution I(t) of the time intervals (between two consecutive events) can be described with the help of a probability distribution, the so-called Poisson distribution (Sect. 2). The vertical lines on the base of Fig. 1 show the chronological sequence of (and the time intervals between) 25 statistical detector events recorded by a digital oscilloscope. 0 Fig.

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