Created in a Bose Einstein Condensate, sound may enter these acoustic black holes but it may not leave.  This creates an system we can experiment with on a table top level and learn about black holes from it.  

The strange and unique features of the Bose condensate never cease to surprise us.  A while back they were used to slow a beam of light almost to a standstill. Now a research team out of the institute of technology in Haifa Israel claims to have created "A sonic black hole in a density-inverted Bose-Einstein condensate." by O. Lahav, A. Itah, A. Blumkin, C. Gordon, and J. Steinhauer (Arxiv link to PDF). 

Harry Benjamin Syndrome, at first a uncontroversial and innocuous idea that transsexual brains are different from other brains, has morphed into a platform for some to denigrate others under a cloak of true pseudoscience proposed by laypeople and supported by not one reputable sexologist, psychologist, or psychiatrist.  What some of them have done is take to attacking anyone who does not fit with their ideal of what a real "woman born transsexual" is (Like a transsexual who does not want sexual reassignment surgery.)  All they while complaining about how oppressed they feel.  This is just a little snapshot of the bigotry, hy

In spite of not having any where near as much physics education some people feel a need to prove they know more than I do.  These people are never physicist themselves, they have nothing to prove.  Usually they are someone with little education and/or self esteem.
For example my last blog entry "Dark Matter and Dark Energy as Undiscovered Particles of Scalar and Vector Fields.".
In which I am describing quantum field theory in curved space-time.  There are no matrices being used here yet.  I get this hostility laden response. 

Dark matter, dark energy and scalar tensor vector theories of gravity are widely thought of as at odds.  I have shown that if the scalar and vector fields common to alternative gravities are considered as any other quantum fields on a curved space time the consequence is the creation of particles and matter which need not couple into the electromagnetic force.  In short if there are "extra" fundamental forces of nature then there will be "extra" dark matter particles related to those forces. 

Autogynephilia: The love of one's self as a woman.  As used by psychologist and sexologist Ray Blanchard autogynephilia is a male's sexual attraction to the idea or image of their feminized self. 

This first video is where I explain Hilbert Space Tensor Products. I explained Hilbert spaces and operators in a previous video. The sound is not stellar so turn up the volume to the max, and you should be able to hear it.


This is the last in my series of video's on Quantum Theory. This is where I discuss quantum entanglement in a non mathematical way.


The series is now complete. The only subject I did not go into which I intended to go into was measurement. Measurement in quantum theory is basically the application of a hermitian operator O to a state <n|

<n|O|n>/<n|n>