Physics news

Up the stairs and down the stairs

Landsatt satellites used to track Yellowstone's geothermal heat - see www.physorg.com/print242540137.html. Yellowstone National Park sits on top of what is thought to be a huge ancient and still active volcano, a so called hot spot - downstairs. Heat is thought to rise from an underground chamber that creates some 10,000 hot springs, mud pots, terraces and geysers. 

Blowing Bubbles ... in the sky

At www.physorg.com/print241937908.html ... we might ask, is the black hole at the centre of the Milky Way quietly dozing away or is it secretly gobbling all that dares to come alongside? In a paper in Physical Review Letters Subir Sarkar of Oxford University discusses bubbles feeding black holes - or is it vice versa? These bubbles are gigantic structures above and below the centre of the galaxy that were discovered fairly recently and studied by Harvard astrophysicists using material from NASAs Fermi satellite.

Some science at the edge

According to a paper in Astrophysics and Space Science by Dragan Hajdukovik contemporary physics has two cornerstones, namely General Relativity and the Standard Model of Particle Physics. General Relativity is our best theory of gravitation. The Standard Model is a collation of Quantum Field theories and claims that everthing in the universe is made from six quarks and six leptons (and their anti-articles) which interact through exchange of gauge bosuns . However, he says these two theories do not fit with certain observations .... go to www.physorg.com/print241707260.html.

Neutrinos ... real or imagined?

David de Hilster, in 'The Neutrinos: Doomed from Inception'  published in the Proceedings of the NPA, College Park, MD 2011, begins by saying some scientists are attracted to the neutrino as it adds desirable characteristics to new theories. However, neutrinos are clearly linked to special relativity. If special relativity is fiction then the neutrino cannot exist. The author, de Hilster, leans on the work of Argentine physicist, Ricardo Carezani.

Little Rascals

Neutrinos are rascally little devils according to Ask a Physicist at http://io9.com/5859576/whats-the-strangest-thing-about-neutrinos/ in reply to a query on why neutrino oscillations occur. At www.thunderbolts.info the actual existence of neutrinos is questioned and the recent experiment in which neutrinos were said to move faster than light involved something going into a mountain  and some shreds of something coming out the other side - but was it neutrinos?

Einstein

A beautiful piece with the title, 'Why Einstein was wrong about being wrong' is at www.physorg.com/print237818552.html and begins with the Theory of Relativity, a mathematical equation, and how it meant the universe was either expanding or contracting. Einstein went on to tweek the theory and adopted the 'cosmological constant' in order to counteract gravity. Some years later Edwin Hubble found the universe was in motion and this led, after some deliberation, to the Big Bang Theory.

Speed of Light

It seems some scientists are worried the general public are not up to understanding what science is all about - and fearful of the way the media presented the hullaballoo over the CERN discovery that neutrinos may travel faster than light - see www.physorg.com/print237470243.html. Sounds a bit like those politicians that have no faith in the democratic process. 

The Speed of Light is also the subject at www.physorg.com/print237460906.html - time dilation is taken into account.

The CERN neutrino experiment ... and Mars

Two weeks since the CERN experiment on neutrinos and some 30 papers in response to the claim they move faster than light have been lodged on the preprint server arXiv - suggesting reasons why the experiment was wrong. At www.thunderbolts.info, however, the actual existence of neutrinos are challenged - but in general neutrinos are accepted by scientists (see www.physorg.com/print237106952.html ). 

That Speed of Light dispute

The subject pops up at www.physorg.com/print236017754.html as it threatens Einstein's 'Relativity Theory' - but as we heard at the last SIS member meeting in Luton, that theory may not be quite as sound as supposed by consensus physicists. Naturally, mainstream scientists are sceptical of the results of the experiment - and so they should be. That is their function. The assumption is that there is something wrong with the experiment rather than with Relativity.

The Higgs Boson ... and faster than light particles found at CERN

At www.physorg.com/print235809985.html it begins by saying the universe would not be the same without the Higgs Boson. The search for this elusive particle would help scientists understand the birth of the universe from the Big Bang. It can explain the speed and magnitude of the expansion ... and there follows an outline of the calculations that were made to arrive at this article of belief.