•April 20, 2015 • Leave a Comment
“Astronomers have discovered a curious empty section of space which is missing around 10,000 galaxies.
The ‘supervoid’, which is 1.8 billion light-years across, is the largest known structure ever discovered in the universe but scientists are baffled about what it is and why it is so barren.
It sits in a region of space which is much colder than other parts of the universe and although it is not a vacuum, it seems to have around 20 per cent less matter than other regions.
Although the Big Bang theory allows for areas that are cooler and hotter, the size of the void does not fit with predicted models. Simply put, it is too big to exist…”
Giant mysterious empty hole found in universe – telegraph.co.uk
•August 27, 2014 • Leave a Comment
“Much like characters on a television show would not know that their seemingly 3 – D world exists only on a 2 – D screen, we could be clueless that our 3 – D space is just an illusion. The information about everything in our universe could actually be encoded in tiny packets in two dimensions.
Get close enough to your TV screen and you’ll see pixels, small points of data that make a seamless image if you stand back. Scientists think that the universe’s information may be contained in the same way, and that the natural “pixel size” of space is roughly 10 trillion trillion times smaller than an atom, a distance that physicists refer to as the Planck scale.”
Do we live in a 2-D hologram? New Fermilab experiment will test the nature of the universe – phys.org
•July 19, 2014 • Leave a Comment
What we say and how we say it exacts a profound influence over how we experience the world – including our perceptions of “objective” reality. Is there such a thing?
A Facebook discussion on how language shapes the mind.
•July 17, 2014 • Leave a Comment
“In a new paper published as the July 2014 cover article in Nature Photonics, physicists Hyunseok Jeong, et al., at institutions in South Korea, Italy, and Australia, have devised and experimentally demonstrated a novel scheme to generate entanglement between quantum and classical (or “particle-like” and “wave-like”) states of light. This study marks the first time that physicists have generated entanglement between a single photon and a coherent wave-like state of light.”
Entanglement between particle and wave-like states of light resembles Schrodinger’s cat experiment (Update) – Phys.org
•September 24, 2013 • 2 Comments
“… the separation between past, present, and future is only an illusion, although a convincing one.” – Albert Einstein
“The amplituhedron is not built out of space-time and probabilities; these properties merely arise as consequences of the jewel’s geometry… Encoded in its volume are the most basic features of reality that can be calculated, “scattering amplitudes,” which represent the likelihood that a certain set of particles will turn into certain other particles upon colliding.
… The 60-year-old method for calculating scattering amplitudes — a major innovation at the time — was pioneered by the Nobel Prize-winning physicist Richard Feynman….“The number of Feynman diagrams is so explosively large that even computations of really simple processes weren’t done until the age of computers,” Bourjaily said….In 1986, it became apparent that Feynman’s apparatus was a Rube Goldberg machine.”
A Jewel at the Heart of Quantum Physics – Quanta Magazine
•September 12, 2013 • Leave a Comment
“A team of University of Queensland physicists has transmitted an atom from one location to another inside an electronic chip.
The team, which includes Dr Arkady Fedorov and Dr Matthias Baur from UQ’s ARC Centre of Excellence for Engineered Quantum Systems and the School of Mathematics and Physics, published its findings in Nature.
Dr Fedorov said the team had achieved quantum teleportation for the first time, which could lead to larger electronic networks and more functional electronic chips.
‘This is a process by which quantum information can be transmitted from one place to another without sending a physical carrier of information,’ Dr Fedorov said.
‘In this process the information just appears at the destination, almost like teleportation used in the famous science fiction series Star Trek.’”
One step closer to teleportation – Science Alert