SciVee - matrix
http://www.scivee.tv/tag/matrix/feed
enA Helmholtzian operator and electromagnetic-nuclear field
http://www.scivee.tv/node/27991
<p>A Helmholtzian operator is a linear second order partial differential operator, typically in four independant variables; a generalization of the d'Alembertian operator where it's additional constant vanishes. When the time-independant version (in three independent (space) variables acting on a function or vector vanishes, the resulting equation is called the Helmholtz's equation. In four dimensions this equation is referred to as the Klein-Gordon equation (with imaginary constant) .</p>
<p><a href="http://www.scivee.tv/node/27991">read more</a></p>differential operatordoubletelectromagnetic fieldfour-vectorHelmholtz equationKlein-Gordon equationmathmatrixMaxwell's equationsnuclear fieldTue, 22 Mar 2011 09:07:28 +0000cloudmichael27991 at http://www.scivee.tvThe d'Alembertian and Maxwell's equations
http://www.scivee.tv/node/27839
<p>The d'Alembertian is a linear second order differential operator, typically in four independant variables. The time-independant version (in three independent (space) variables is called the Laplacian operator. When it's action on a function or vector vanishes, the resulting equation is called the wave equation (or Laplace's equation). When it's action is identified with a non-zero function (or vector function) the resulting equation is called Poisson's equation. This equation is fundamental to and of great importance in field theory.</p>
<p><a href="http://www.scivee.tv/node/27839">read more</a></p>d'Alembertiandifferential operatorElectromagnetismfield theoryfour-vectorLaplace's equationLaplacianmatricesmatrixMaxwell's equationsPoisson's equationvectorwave equationTue, 15 Mar 2011 01:29:27 +0000cloudmichael27839 at http://www.scivee.tvProbing the spindle matrix
http://www.scivee.tv/node/16339
<p>A microtubule-independent network of proteins called the spindle matrix is involved in assembling mitotic and meiotic spindles, but whether the matrix makes a mechanical contribution to spindle shape is unclear. Gatlin et al. manipulate spindles with microneedles to directly probe the mechanical properties of the spindle matrix. This biosights episode presents the paper by Gatlin et al. from the February 22, 2010 issue of The Journal of Cell Biology, and includes an interview with lead author Jay Gatlin. Produced by Eun Choi and Ben Short.</p>
<p><a href="http://www.scivee.tv/node/16339">read more</a></p>biosightsJCBJournal of Cell Biologymatrixmetaphasemetaphase platemicrotubule motorsmicrotubulespolespindlespindle matrixXenopus laevisWed, 24 Feb 2010 15:48:13 +0000JCB16339 at http://www.scivee.tv