'Maxwell equations' presentation slideshows

From Maxwell to Mitochondria

Applying the Maxwell equations to mitochondria seems a hopeless task: there is so much complexity. But computers and their chips are nearly as complicated. Design of circuits is done every day by uncounted numbers of engineers and scientists, thanks to Kirchoff's Current Law, which is a conservation law in one dimensional (branched) systems of devices. Kirchoff's current law conserves flux, not current in its usual derivation. But Maxwell's equations do not conserve flux; they conserve total current. Total current J equals flux plus displacement current J eps_0 partial E/partial t . Maxwell's definition of current allows circuit laws to be applied to complex systems of devices, over a wide range of times and conditions. Channels and enzymes are devices because they localize current flow. Channels and enzymes can be analyzed by the methods of circuit theory, for that reason.

686 views • 65 slides

Updating maxwell with electrons and charge Version 6

Maxwellu2019s equations describe the relation of charge and electric force almost perfectly even though electrons and permanent charge were not in his equations, as he wrote them. For Maxwell, all charge depended on the electric field. Charge was induced and polarization was described by a single dielectric constant. Electrons, permanent charge, and polarization are important when matter is involved. Polarization of matter cannot be described by a single dielectric constant u03b5_(r )with reasonable realism today when applications involve 10^(-10) sec. Only vacuum is well described by a single dielectric constant u03b5_(0 ). Here, Maxwell's equations are rewritten to include permanent charge and any type of polarization. Rewriting is in one sense petty, and in another sense profound, in either case presumptuous. Either petty or profound, rewriting confirms the legitimacy of electrodynamics that includes permanent charge and realistic polarization. One cannot be sure that a theory of electrodynamics without electrons or (permanent, field independent) charge (like Maxwellu2019s equations as he wrote them) would be legitimate or not. After all a theory cannot calculate the fields produced by charges (for example electrons) that are not in the theory at all! After updating, tMaxwellu2019s equations seem universal and exact. tPolarization must be described explicitly to use Maxwellu2019s equations in applications. t Conservation of total current (including u03b5_0 u2202Eu2044u2202t) becomes exact, independent of matter, allowing precise definition of electromotive force EMF in circuits. tKirchhoffu2019s current law becomes as exact as Maxwellu2019s equations themselves. tConservation of total current needs to be satisfied in a wide variety of systems where it has not traditionally received much attention. tClassical chemical kinetics is seen to need revision to conserve current.

635 views • 62 slides

Updating Maxwell with Electrons and Charge July 31 2019

Maxwellu2019s equations describe the relation of charge and electric force almost perfectly even though electrons and permanent charge were not in his equations, as he wrote them. For Maxwell, all charge depended on the electric field. Charge was induced and polarization was described by a single dielectric constant. Electrons, permanent charge, and polarization are important when matter is involved. Polarization of matter cannot be described by a single dielectric constant ud835udf00r with reasonable realism today when applications involve 10u221210 sec. Only vacuum is well described by a single dielectric constant ud835udf000 . Here, Maxwell's equations are rewritten to include permanent charge and any type of polarization. Rewriting is in one sense petty, and in another sense profound, in either case presumptuous. Either petty or profound, rewriting confirms the legitimacy of electrodynamics that includes permanent charge and realistic polarization. One cannot be sure ahead of time that a theory of electrodynamics without electrons or (permanent, field independent) charge (like Maxwellu2019s equations as he wrote them) would be legitimate or not. After all a theory cannot calculate the fields produced by charges (for example electrons) that are not in the theory at all! After updating, (1) Maxwellu2019s equations seem universal and exact. (2) Polarization must be described explicitly to use Maxwellu2019s equations in applications. (3) Conservation of total current (including ud835udf000ud835udf15ud835udc04ud835udf15ud835udc61u2044) becomes exact, independent of matter, allowing precise definition of electromotive force EMF in circuits. (4) Kirchhoffu2019s current law becomes as exact as Maxwellu2019s equations themselves. (5) Classical chemical kinetics is seen to need revision to conserve current.

594 views • 58 slides

Impedance Tests

571 views • 53 slides

638 views • 40 slides

General wall impedance theory for 2D axisymmetric and flat multilayer structures

430 views • 31 slides

Poster Presentation JD02-42 at XXVI th IAU General Assembly in Prague August 14-25, 2006

Poster Presentation JD02-42 at XXVI th IAU General Assembly in Prague August 14-25, 2006. Electromagnetic Fields of Magnetized Compact Stars in Braneworld. Bobomur a t Ahmed ov & Farrukh Fattoyev , Uzbekistan AS, Tashkent E-mail: ahmedov@astrin.uzsci.net & farid@ictp.it.

322 views • 21 slides

Jun Meng

f(R) Gravity and Maxwell Equations from the Holographic Principle. Jun Meng. contents. 1.Einstein equations from the holographic principle 2.f(R) gravity from the holographic principle 3.Maxwell equations from the holographic principle. 1.Einstein equations from the holographic principle.

303 views • 17 slides

Department of Electronics

Nanoelectronics 02. Atsufumi Hirohata. Department of Electronics. 12:00 17/January/2014 Friday (D/L 002). Quick Review over the Last Lecture. Nano-scale miniaturisation : reduction of ( effective electron paths ) reduction of ( electron scattering )

253 views • 14 slides

How do fields create dipoles?

How do fields create dipoles?. E. -. +. Charges are not free to move in a dielectric! But electrons can be driven by E a bit away from the Nucleus without completely leaving it, creating an excess Charge on one side and a deficit on the other, ....

163 views • 14 slides

324 views • 13 slides

PHY 417G: Review

144 views • 13 slides

The Maxwell Equations

The Maxwell Equations. And the fun stuff you can do with them. So we have these 4 Equations:. Implications:. ?Electric and magnetic fields are intimately connected ?Electromagnetic Waves. Other way gives. OR. OR C= The Speed of Light. Electromagnetic Rays. Right Hand Rule:.

468 views • 12 slides

Heavy quark energy loss in finite length SYM plasma

Heavy quark energy loss in finite length SYM plasma. Cyrille Marquet. Columbia University. based on F. Dominguez, C. Marquet, A. Mueller, B. Wu and B.-W. Xiao, arXiv:0803.3234. for the N= 4 SYM theory, the AdS/CFT correspondence allows to investigate the strong coupling regime.

262 views • 11 slides

126 views • 1 slides