We use an advection-diffusion equation to quantify the dynamics of the signal molecule and the
advection-diffusion equation is coupled to the Navier-Stokes equation governing the fluid flow. The
coupled equations are numerically solved by a finite-element
Homework assignment No. 4.
This assignment is due on April 11.
RNA folding as a 2-state system. Read Nelson section 6.7 .
Explain qualitatively what effect applied force should have on the
probability of finding the RNA molecule folded. Then make
Homework assignment No. 3.
This assignment is due on April 4.
1. Estimate the Reynolds number of
(a) A swimming bacterium; (b) a Tetrahymena cell (a type of ciliated
protist); (c) a tadpole; (d) a trout .
2. L R
Homework assignment No. 6.
This assignment is due on April 25.
1. Complete Your turn 10d on Page 368 in Nelsons textbook.
P( L) A e ( L L ) f / k BT 1 A(1 1) 0
Smoluchowski equation, we can write P as
then substitute this into Smoluchowski
Homework assignment No. 7.
This assignment is due on June 21.
1. Derive the lens makers equation on Slide # 19 with the information on
Slides # 16-18.
Assume the object distance is
and the image distance is
refraction from the first interface is
n1 n2 n
Thomas Femi Theory
i (r )
i2 v ( r ) i ( r )
' i ( r ) j ( r ')
i ( r ) j ( r ')
2 i, j
4 0 r r '
i (r )
i2 i ( r ) vi ( r1 ) i ( r1 )dr1
1 e i ( r1 ) j ( r2 )
2 i j
1 e i ( r1
V 4 K 2 V 2
(2 ) | K ( K ) | (2 )
D( )d V D3 / 6 2 v 3
D v[6 ( )]
exp( / kBT )
CV kB d Dp ( )(
kBT (exp( / kBT ) 1)2
CV 2 3
2 v k BT 2
4 exp( / k BT )
Experiment 1 Properties of the Optical Grating
A diffraction grating is an optical component where dispersion happens by theory of diffraction. It
consists of large numbers of parallel, equilateral, equidistant slits (or nicks). Based on diffraction
The resistance, the electric capacitance and the inductance are basic elements for electric circuit.
Series circuit constituted by RC, RL or RLC has different features, including the transient
behavior, the steady-state character
Properties of Silicon Photocell
and Solar Cell
One of the very important properties of semiconductor is its ability to convert photo energy to
electronic energy without external power. Photocell and Solar cell are two typical applications
Practice and Application of Michelson
The wave properties of light lead to interference. If when two light beams originated from one
light meet at the same spot after traveling along different paths, optical interference occurs