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Forensic Engineering Fundamentals
book

Forensic Engineering Fundamentals

by Harold Franck, Darren Franck
December 2012
Beginner to intermediate content levelBeginner to intermediate
487 pages
17h
English
CRC Press
Content preview from Forensic Engineering Fundamentals
354 Forensic Engineering Fundamentals
Based on the resistance and capacitance of cell membranes, the current according to
the Blair curve is expressed as
It
b
e
t
()=
1
τ
(11.25)
where τ is the membrane time constant. e time constant for dierent human tissue is
shown in Table 11.14.
All excitable cells are surrounded by an ion-permeable membrane, which results in a high
concentration of potassium (K
+
) ions in the cell and a high concentration of sodium (Na
+
) ions
outside the cell. e net eect is a transmembrane potential as shown in Figure 11.5.
Dalziel reported the rst studies on the threshold for perception to sinusoidal current.
Figure 11.6 rep ...
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Publisher Resources

ISBN: 9781439878392