All posts in Physics

spacetime

Does Spacetime Have Any Time Dimension?

The concept of time as a way to measure the duration of events is basically intuitive. Some researchers believe that this Newtonian idea of time as an absolute quantity and fourth dimension in spacetime is incorrect. They propose to replace [...]

Schrödinger's Cat;
visualization of the separation of the universe due to two superposed and entangled quantum mechanical states. (image credit: Christian Schirm)

Schrödinger’s cat: the quantum world not so absurd after all?

Since Erwin Schrödinger’s famous 1935 cat thought experiment, physicists around the world have tried to create large scale systems to test how the rules of quantum mechanics apply to everyday objects. Scientists have only managed to recreate quantum effects on [...]

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New light on dark matter: space station magnet attracts praise

Nobel prizewinner Samuel Ting, early Thursday morning (March 4, 2:00 AEDT), announced the first results from the Alpha Magnetic Spectrometer (AMS) search for dark matter. The findings, published in Physical Review Letters, provide the most compelling direct evidence to date [...]

Composite image of SN 1987A

A Supernova Post-Mortem in Radio Waves

It was a late February night in 1987 when, standing on top of a Chilean mountain range, Ian Shelton saw something which no one had seen for centuries. Looking up in disbelief, he watched a star explode some 160 thousand [...]

Electron-positron collisions at SLAC produce a Υ(4s) resonance that results in an entangled pair of B mesons. Source: http://physics.aps.org/articles/v5/129

Turn Back Time

Recall the outrageously cool movie from the 1980s, Back to the Future? Marty McFly and Doc Brown were stretching scientific boundaries, righting the future, all while making sure not to meet their future selves. Fast-forward and time travel may be [...]

RIP Lonesome George

Weekly Science Picks

Ah, the weekend! Time to kick back, relax, and look back over everything that’s happened over the past few days. And I’m rather happy to say that some quite interesting things have happened, including the Leonid meteor shower which peaked [...]

Image credit: The CLASH team/Space Telescope Science Institute

A long time ago in a galaxy far, far away

Feast your eyes on this image… The tiny object in that inset may not look like much. A blurry smudge of red pixels. Not nearly as dramatic as the stunning bouquet of galaxies all around it. But in astronomy, not [...]

JosephWright-Alchemist

The (nuclear) alchemists of Darmstadt and the doubly magic tin-100 nucleus

An international group of researchers announced in the journal Nature that they had succeeded in creating tin-100.   This experiment helps us understand how heavy elements have formed.  A few minutes after the Big Bang the universe contained no other elements [...]

The Warkworth antenna in New Zealand – an important part of early SKA science. Credit: Alex Wallace.

Radio quiet, please!

Originally conceived over 20 years ago, there’s a project being undertaken by scientists and engineers across the whole world to help us all better understand the mysteries of the galaxy and the very beginnings of the Universe. It’s estimated to [...]

Simulation of Higgs Boson decay.

A brand new boson?

It’s official. As was the subject of a press conference here in Europe this morning, the LHC has discovered a new particle. Is it the much talked about Higgs boson? Evidently it’s far too early to say with certainty. But whatever [...]

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The Higgs boson does exist: New particle observed at 125 GeV

Australian researchers helped design and build parts of the ATLAS detector and helped analyse the results. Researchers using two huge detectors at the Large Hadron Collider announced the results of their searches at a joint scientific seminar in Geneva and [...]

Nature loves symmetry.  Source: Floramie Rose Mirasol

Weighty thoughts on antimatter

A pulse of particles speeds into the vacuum chamber.  Positrons, 20,000,000 antimatter particles, clumped in a pulse one nanosecond deep.  Like a silent, angry swarm they are targeted into a porous silica target.  The positrons are confined by a magnetic [...]

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Physicists are Still Not Sure in the Continuing Quest for the Higgs Boson

The Higgs Boson is now called something of a half-truth after two teams of physicists conducted research involving the Large Hadron Collider. Though initial reports suggest that the Higgs Boson truly is there and does possess a mass around 133 [...]

Neutrinos Travel Faster Than Light

Tommaso Dorigo from Science20.com reports on a recent discovery in the measurement of neutrino speeds with an unexpected 60 nanosecond discrepancy. During three years of data collection OPERA collected over 15,000 neutrino interactions hinting at an earlier arrival times than expected. Here is the [...]

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