fields_lec5

fields_lec5 - Key Concepts for this section 1: Lorentz...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
1: Lorentz force law, Field, Maxwell’s equation 2: Ion Transport, Nernst-Planck equation 3: (Quasi)electrostatics, potential function, 4: Laplace’s equation, Uniqueness 5: Debye layer, electroneutrality Goals of Part II: (1) Understand when and why electromagnetic (E and B) interaction is relevant (or not relevant) in biological systems. (2) Be able to analyze quasistatic electric fields in 2D and 3D. Key Concepts for this section
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EM interactions in media - polarization (linear medium) 0 ext E = G - + - + - + - + - + - + - + - + - + - + - + - + ext E G -+ ext E G pol E G 1 pol ext media ext pol ext r E EE E E E ε ∝= = GG G G G G ε r : relative permittivity (dielectric constant ) of the medium (=>1)
Background image of page 2
ε of various media Medium ε r Water (pure) ~80 0.9% NaCl solution ~60 Ethanol 24 Methanol 34 Acetic acid 15~16 Gases ~1 Glass 3~4 Plastics and rubbers 2~9
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Maxwell’s equation in a medium (Magnetic field) μ ο : free space permeability (4 π ×10 -7 H/m) 00 0 rr r E E BJ J tt μμ μμεε μ με ∇× = + = + G G GG G (1 ) mag ext media ext mag r ext r BB B B B B ∝= + = G G G G μ r
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/11/2011 for the course BIO 2.797j taught by Professor Matthewlang during the Fall '06 term at MIT.

Page1 / 13

fields_lec5 - Key Concepts for this section 1: Lorentz...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online