Science Forums Biology Forum Molecular Biology Forum Physics Chemistry Forum A new fux density in electrodynamics

 Forum Physik Forum Physik.

# A new fux density in electrodynamics

## A new fux density in electrodynamics - Forum Physik

### A new fux density in electrodynamics - Forum Physik.

#1
08-16-2004, 11:38 AM
 josefmatz Guest Posts: n/a
A new fux density in electrodynamics

In some of my last essays i asked about an experiment i have seen in TV in
germany. A american group of scientists presentet the spinnimg of a black
wheel while radiation incident perpendicurar on the wheel.
The wheel was sensitively mounted in a evacuatet glass tube. It was around
1991 or 92.

I do not know the origin, but i want to say that this was a great
experiment.

It leads to a flux density which is electromagnetic origin. Except the
energy flux density there exists another flux density in electrodynamics, i
call it spin flux density. It has the direction of the energy flux. It
differs by a factor 1/frequency from the energy flux density and it is built
up by the difference of the circular split of a elliptic polarized wave.
Note the energy density is the sum (not the difference) of both.

This simple formula i found 1992 cause i was concerned with polarization
calculations. I found the following rules that time:
1. The energy is propotional to the square of the two main axes of the
ellipse. while the spin flux is proportional to the product of both.
2. 2002 i found that this flux density fulfills a conservation law for the
normal component when you have a incident wave on a non absorptive
macroscopic medium. Formulas similar to the Fresnel formulas. The reflection
coefficient for example is the square of the product of the reflection
coefficients for the perpendicular and parallel polarized part of the
incident wave. The transmission coefficient is the square of the product of
the Fresnel transmission coefficients times a simple factor. Reflection plus
transmission coefficient equal 1 for these spin fluxes.
3. Linear polarized waves do not transport spin.
4. The flux is proportiobal to the vector product of E and E*, the complex
conjungated field. If you assume
the electric field to be real, this flux would not exist, because the vector
product of the same real vector is zero !
5. Thermal light - circular or elliptic polararized - which comes directly
from a thermal source like a lamp or the sun - does not show spinning of the
wheel.

This symmetry i call the spin symmetry of classical electrodynamics. There
exists a variety of possibilities
to form spinwaves from thermally emitted waves:
1. Using a circular polarizer to strip of one of the two rotating fields in
a thermal emitted wave (the rotation for both goes in opposite direction)
2. Linear polarize thermal emitted wave and then make a metal or total
reflecion (then you get light which is elliptic polarized and having spin
3. I also found a literature note that thin magnetic layers on a substrate
could have such an effect.

I also thought upon thermodynamic machines an found following rules
1. You can not find polarizers in nature with can polarize thermal light
linear or circular with more than 50% efficiency. Normally very much less
than 50 % efficiency.
2. Energy which is transferred in form of a momentum to the body (the
rotating black wheel) can not be transformed to thermal energy at the same
time.
3. There are frequency dependent effects which limit radiation machines to
efficiencies not far away from the efficiencies of solar cells.

Spin effects can be used to directly transform radiation energy to
mechanical energy.

Best regards [Only registered users see links. ]

Josef Matz

Please excuse my english its not perfect.

 Tags density , electrodynamics , fux

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home General Science Forums     Biology Forum     New Member Introductions Forum     Chemistry Forum         Organic Chemistry Forum     Physics Forum     General Science Questions and Layperson Board         Science and Religion Forum         Zoology Forum     Environmental Sciences and Issues General Forum     Chit Chat         Science and Lab Jokes     Article Discussion     Molecular Biology News and Announcements         Conferences , Symposiums and Meetings         Molecular Station Suggestion Forum         Instructions for Posting, Help, and Frequently Asked Questions     Science News and Views         Molecular Biology Lectures and Videos     Science Careers         Post-doctoral         Medical School         Ph.D Doctor of Philosophy         Science Jobs Forum Molecular Research Topics Forum     PCR - Polymerase Chain Reaction Forum         Real-Time PCR and Quantitative PCR Forum     Bioinformatics         BioStatistics Forum     Molecular Biology Techniques         Molecular Cloning Forum         Electrophoretic Mobility Shift Assay Forum         Agarose Gel Electrophoresis Forum         BioPhysics Forum         Gene Therapy     Cell Biology and Cell Culture         Apoptosis, Autophagy, and Necrosis Forum         Flow Cytometry Forum         Transfection Forum         Confocal - Microscopy Imaging Techniques         Immunology and Host-Pathogen Interactions         Signalling Biology         Stem Cell Forum     Basic Lab Protocols and Techniques         SDS-PAGE Gel Electrophoresis Forum     DNA Techniques         DNA Extraction Forum         cDNA Forum     Epigenetics Forum: DNA Methylation, Histone and Chromatin Study         ChIP Chromatin Immunoprecipitation Forum     Protein Science         Antibody Forum             Immunoprecipitation Forum         Western Blot Forum         Protein Crystallography Forum         Recombinant Protein Forum         ELISA Assay Forum         Protein Forum     Proteomics Forum         Peptide Forum         Mass Spectrometry Forum         2-D Gel Electrophoresis Forum     Omics and Genomics Forum         Microarrays Forum         Genomics Forum     RNA Techniques Forum         RNAi and SiRNA Forum     Histology Forum         Immunohistochemistry Forum         Immunocytochemistry Forum         Electron Microscopy Forum         Immunofluorescence Forum     Protocols and Methods Forum     Molecular Biology Articles and Protocols     Animal and Molecular Model Systems         Drosophila Forum         Yeast Forum         Zebrafish Forum         Botany Forum         C Elegans Forum         Arabidopsis and Plant Biology         Microbiology Forum         Knockout Mouse Forum     Chromatography Forum Products and Vendor Discussion     Molecular Biology Products and Vendors         Bad Product/Service? Post Here         Lab Equipment Discussion and Reviews Regional Molecular Biology Discussion     Forum Chemie     Forum Biologie     Forum Biologia     Forum Chimica     Forum Physik     Forum De Chimie     Forum De Physique     Forum Chemia     中国人分子的生物学论坛 Chinese     Greek Molecular Biology Forums     分子生物学のフォーラム Japanese     ميدان فارسى. Persian Molecular Biology     [أربيك] علم ساحة- Arabic     Forum de Biologie Moleculaire     Forum Biologia Molecolare     Forum die Molekularbiologie     Foro Biologia Molecular

 Similar Threads Thread Thread Starter Forum Replies Last Post sdr@sdrodrian.com Physics Forum 1 01-27-2008 01:53 PM S D Rodrian Physics Forum 7 07-08-2006 02:40 PM Josef Matz Forum Physik 0 03-30-2005 11:25 PM Josef Matz Physics Forum 0 03-30-2005 11:02 PM SDR Physics Forum 5 02-16-2005 06:41 AM

All times are GMT. The time now is 04:44 PM.

 Contact Us - Molecular Biology - Archive - Privacy Statement - Top