What is Time ?
" ... none of the parts of time has an abidingAristotle
existence, and that which does not abide can hardly have position. It
would be better to say that such parts had a relative order, in virtue
of one being prior to another."
, in Categories.
I am in process of writing a blog on this. The purpose of the current 'Random Noise' blog is to discuss ideas about the nature of time. My own theory of time embraces these notions:
Scientists say they have detected giant twisting waves in the lower atmosphere of the Sun, shedding light on the mystery of the Sun's corona, the region around the Sun, extending more than one million kilometres from its surface, which has a vastly higher temperature than its surface. The findings of this investigation could help us understand more about the turbulent solar weather and its affect on our planet.
The massive solar twists, known as Alfvén waves, were discovered in the lower atmosphere with the Swedish Solar Telescope in the Canary Islands by scientists from Queen's University Belfast, the University of Sheffield and California State University Northridge.
If the Higgs boson, whatever that will turn out to be, is hiding, wherever it may be found continues to shrink.
The latest analysis of data from the CDF and DZero collider experiments at Fermilab has now excluded a significant fraction of the allowed Higgs mass range established by earlier measurements. Those experiments predict that the Higgs particle should have a mass between 114 and 185 GeV/c2. Now the CDF and DZero results carve out a section in the middle of this range and establish that it cannot have a mass in between 160 and 170 GeV/c2.
The NASA/ESA Hubble Space Telescope says a look into the heart of the Perseus galaxy has provided evidence that galaxies are embedded in halos of dark matter. Small galaxies have remained intact while larger galaxies around them are being ripped apart by the gravitational tug of other galaxies.
The explanation? The undisturbed galaxies are enshrouded by a "cushion" of dark matter that protects them.
Dark matter is a theoretical invisible form of matter that accounts for most of the Universe's mass. Astronomers have deduced the existence of dark matter by gravitational influences on normal matter, such as stars, gas and dust.
There's no question that employees at Fermi National Accelerator Laboratory have watched with some concern as the LHC got all the press about being the future of physics despite the fact it hadn't actually produced anything. They have also quietly continued setting world records and are once again reminding people that Fermilab's Tevatron, currently the world's most powerful operating particle accelerator, is actually ahead, even in the race to find the as-yet undefined "Higgs particle."
Nanomaterials like carbon possess unique properties, which have led to first applications in novel electronic devices and sensors. These materials are based on ordered, atomically thin layers of carbon atoms, for example in the form of a single layer as so-called “graphene”, or rolled-up in carbon nanotubes.
The electronic properties of such structures are closely related to those of graphite, which consists of a stack of graphene sheets. Despite intensive research in the past, the fundamental behavior of electrons in this material are not fully understood and still controversially debated.
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|
A few months ago I did a bit of thinking about gravity from a different angle. I asked the question... How would the equations of classical General Relativity look if Planck Units were used. Let me make it clear I am not not talking about the Planck Scale.. just the use of it's units at the classical scale. Of course anywhere near Planck Scale Quantum effects dominate. I have already written a book about that. "Quantum Space-Time Dynamics
In tales, legend and role-playing games, sprites are tiny creatures that cause lots of rascally hijinks - sometimes they even dance in the sky. Scientists at Tel Aviv University say that some "sprites" are very real and they are zipping across the atmosphere, providing a possible explanation for those more modern legendary denizens of the skies; UFOs.
Thunderstorms, says Prof. Colin Price, head of the Geophysics and Planetary Sciences Department at Tel Aviv University, are the catalyst for a newly discovered natural phenomenon he calls "sprites." He and his colleagues are one of the leading teams in the world studying the phenomenon, and Prof. Price leads the study of "winter sprites" ― those that appear only in the northern hemisphere's winter months.
The rotating black hole has been described as one of nature's most perfect objects. As described by the Kerr solution of Einstein's gravitational field equations, its spacetime geometry is completely characterized by only two numbers — mass and spin — and is sometimes described by the aphorism "black holes have no hair.''
A particle orbiting a rotating black hole always conserves its energy and angular momentum, but otherwise traces a complicated twisting rosette pattern with no discernible regularity.