490 Appendix A. Global list of symbols and units[[Student version, January 17, 2003]]
The notation [X] denotes the concentration of some chemical species X, divided by the reference
concentration of one mole per 10−^3 m(also written 1M). Square brackets with a quantity inside,
[x], refer to the dimensions of that quantity.
Named quantities
Roman alphabet
Abend persistence length of a polymer (bend modulus divided bykBT)[Equation 9.2
on page 303]
Aautocorrelation function [Equation 9.30 on page 339]
Bdrag coefficient at high Reynolds number [Problem 1.7]
Bstretch modulus of a polymer divided bykBT[Equation 9.2 on page 303]
Bpartition coefficient [Section 4.6.1 on page 121]
Ctwist persistence length of a polymer (twist modulus divided bykBT)[Equation 9.2
on page 303]
Ccapacitance [Equation 1.9 on page 18]
Ccapacitance per unit area [Section 12.1.2 on page 445]
cnumber density (for example, molecules per unit volume), also called concentration
[Section 1.4.4 on page 19]
Dtwist-stretch coupling of a polymer [Equation 9.2 on page 303]
Ddiffusion constant [Equation 4.5 on page 104];Dr,rotational diffusion constant [Prob-
lem 4.9]
Eenergy (kinetic and/or potential)
Eelectric field, units ofN·coul−^1 ,orvolt·m−^1 [Equation 7.20 on page 232]
ethe electric charge on a proton
FHelmholtz free energy [Section 1.1.3 on page 6]
Fforce per unit volume [Section 7.3.1 on page 225]
fforce
Gconductance of a single object;Gi,conductance of an ion channel of typei[Sec-
tion 12.3.2 on page 468]
GGibbs free energy [Equation 6.37 on page 209]; ∆Gfree energy change (net chemical
force) [Equation 8.13 on page 267]; ∆G^0 ,standard free energy change [Equation 8.15
on page 267]; ∆G′^0 ,standard transformed free energy change [Section 8.2.2 on page
265]
Gshear modulus, same units as pressure [Equation 5.14 on page 152]
gacceleration of gravity
giconductance per area of a membrane to ions of typei;gi^0 ,conductance at resting
conditions;g^0 tot,sum of allg^0 i[Equation 12.3 on page 447]
Henthalpy [Section 6.5.1 on page 186]
Planck constant [Section 6.2.2 on page 177]
Idisorder [Section 6.1 on page 174]
Ielectric current (charge per time) [Equation 12.5 on page 449];Ia,axial current inside
anerve axon [Section 12.1.3 on page 449]
jnumber flux [Section 1.4.4 on page 19];js,number flux of solute molecules [Equa-
tion 4.18 on page 117];jH 2 O,number flux of water molecules;j(1d),one-dimensional