May 18, 2012

Quantum computing: The light at the end of the tunnel may be a single photon

Quantum physics promises faster and more powerful computers, but quantum versions of basic logic functions are still needed to bring this technology to fruition. Researchers from the University of Cambridge and Toshiba Research Europe Ltd. have taken one step toward this goal by creating an all-semiconductor quantum logic gate, a controlled-NOT (CNOT) gate. They achieved this breakthrough by coaxing nanodots to emit single photons of light on demand.

Return of the vacuum tube

Vacuum tubes have been retro for decades. They almost completely disappeared from the electronics scene when consumers exchanged their old cathode ray tube monitors for flat screen TVs. Their replacement – the semiconductor – is generally the cheaper, lighter, more efficient, and easier to manufacture of the two technologies. But vacuum tubes are more robust in high-radiation environments such as outer space. And since electrons travel faster in a vacuum than through a semiconductor, vacuum tubes are an intrinsically better medium for electricity.

Infrared vision could help the blind to see

Wireless retinal implant could allow for higher-resolution vision

Big Bang Theory - Season 5 Round-Up

Big Bang Theory season 4 DVD cover imageWith the conclusion of season 5 of The Big Bang Theory, we've got our reviews of the last couple of episodes up on the site now, along with links to the science-related subjects that get mentioned in the course of the geek-related comedy.

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May 17, 2012

Microscopy & Microanalysis

Conference/exhibition: 29 Jul 2012 - 2 Aug 2012, Phoenix, Arizona, United States.

Silicon Quantum Information Processing (SiQIP)

Conference: 14 Sep 2012, University of Warwick, Coventry, United Kingdom. Organized by the IOP BRSG: The Magnetic Resonance Group.

11th International Computational Accelerator Physics Conference (ICAP)

Conference: 19 Aug 2012 - 24 Aug 2012, Rostock-Warnemünde, Germany. Organized by Universität Rostock.

Levitating drops controlled by fridge magnets

System could be used to model celestial dynamics

Reality bites

Vlatko Vedral reviews Alex Rosenberg's The Atheist's Guide to Reality

Web life

Universe Sandbox: an interactive space simulator that allows you to build your own solar system, fling asteroids at the Earth and send a teapot into orbit

May 16, 2012

Photon-polarization qubits stored in atomic combs

Solid-state devices could be used as quantum repeaters

May 15, 2012

A cracking approach to nanotechnology

Cracks are exploited to carve out patterns in silicon

May 14, 2012

Drop Reaction and Microfluidic Analysis (DRAMA)

Conference: 11 Sep 2012 - 13 Sep 2012, Royal Dublin Society, Dublin, Ireland.

CMD-24 (ECOSS-29, ECSCD-11, CMMP-12)

Conference/exhibition: 3 Sep 2012 - 7 Sep 2012, Edinburgh International Conference Centre, Edinburgh, United Kingdom. Organized by EPS Condensed Matter Division.

IEEE Nano 2012: 12th International Conference on Nanotechnology

Conference: 20 Aug 2012 - 23 Aug 2012, Birmingham, United Kingdom.

The European School on Magnetism

School: 25 Feb 2013 - 8 Mar 2013, Cargèse, Corsica, France. Organized by Institut Néel.

AIMCAL 2012 Technical Conferences

Conference: 10 Jun 2012 - 15 Jun 2012, Prague, Czech Republic. Organized by AIMCAL - The Association of International Metallizers, Coaters and Laminators.

The edges of the universe: black holes, horizons and strings

Lecture/talk: 9 May 2012 - 10 May 2012, London, United Kingdom.

Photoactivatable metal complexes: from theory to therapy

Conference: 18 Jun 2012 - 19 Jun 2012, London, United Kingdom. Organized by Organised by Professor Peter J Sadler FRS, Professor Akhil R Chakravarty and Dr Nicola J Farrer.

Quantum dots give graphene photodetector a boost

Hybrid device is a billion times more sensitive to light

Vacuum Energy and Virtual Particles

Feynman Diagram showing a pair of virtual particles coming briefly into existence.One of the weirdest facts about quantum physics is that particles are constantly springing into and out of existence all around us. Even within "empty space," which seems like it should contain no energy at all, there are virtual particle pairs that manifest for a moment before annihilating each other.

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May 11, 2012

Bow-shock no-show shocks astronomers

Sun is moving slower than we thought relative to interstellar space

May 10, 2012

Astronomers lift the veil on hidden exoplanet

Discovery using transit-time variations is a first

Frequency comb takes a measure of distance

New interferometry technique uses "thousands of lasers"

In the wake of Fukushima

Steven Judge and Hiroyuki Kuwahara report on efforts to monitor radioactive contamination in areas near Japan's stricken Fukushima Daiichi nuclear power station

May 09, 2012

Silicon 'prism' bends gamma rays

Surprise discovery could lead to new imaging techniques

May 07, 2012

Avengers' Physics

Avengers movie posterWhen a major blockbuster film comes out, there's no shortage of attempts among scientists to make it a "teachable moment." The new comic-based film The Avengers, however, may have more than its fair share of this ... and rightfully so. As I mentioned a while back, even I got on this bandwagon with my recent article about time travel and how it is utilized in some of the Avengers comic book plotlines.

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May 01, 2012

Venus: it's now or never

As next month's transit of Venus nears, Jay M Pasachoff examines the science and history of these exceptionally rare events

Atmospheric tales

Robert P Crease asks why the discovery of Venus's atmosphere is still so controversial

April 30, 2012

Book Review: Physics of the Future

Cover of Physics of the Future by Michio KakuIn Physics of the Future, theoretical physicist Michio Kaku brings the knowledge he's gleaned from interviewing over 300 scientific experts in a diverse range of disciplines to explore the ways that new scientific discoveries will affect the next century of human civilization. The book is broken up in a very clear manner, exploring the near future, midcentury, and far future discoveries that will shape our world in the century to come.

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April 27, 2012

Science Fiction and the End of Science

Last weekend, I discussed using popular culture to present science. Yesterday, PBS's NOVA physics blog, "The Nature of Reality," published an essay from me about how science fiction influences scientists.

In that article, I discuss the ways that science fiction can inspire science, making the point that the science fiction of H.G. Wells was anticipating Einstein's relativity concepts while other scientists were thinking that science was about done with its job. (This idea was pointed out in Lawrence Krauss' book Hiding in the Mirror.)

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April 26, 2012

Einstein, the travelling physicist

Alberto A Martínez reviews Josef Eisinger's Einstein on the Road

Between the lines

Books on bubble physics, quantum exiles and arty photos of particle accelerators, reviewed by Margaret Harris

April 21, 2012

April 2012 Physics Books

Cover of Before the Lights Go Out by Maggie Koerth-BakerMarch was kind of a slow month for new physics book releases, but April sees things picking up again. There are five books of particular interest in the realm of science and technology this month, and I've got them covered in our April 2012 book list. The range is wide, from one about how the Earth could be destroyed (just in time for Mayan calendar fanaticism) to one about how we could save ourselves from an energy crisis and one that explains how to survive the crazy adventures of an intrepid time traveler!

Science, Philosophy, and Pop Culture

Cover of the book The Avengers and PhilosophyMy study plan in college was simple: Learn as much as I could.

Much to my mother's chagrin, this plan didn't include considering how well classes would serve me in the workforce once college was over, but rather scheduling them based on my personal interests. As much as I could, I chose classes that I thought would give me some clue for understanding an aspect of the universe that had been a mystery to me.

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April 19, 2012

Return to Macondo

Alastair Fraser reviews Joel Achenbach's A Hole at the Bottom of the Sea: the Race to Kill the BP Oil Gusher

Web life

Peter Coles' blog In the Dark offers an astrophysicist's perspective on science policy, poetry and jazz

April 12, 2012

The cat that never dies

Robert P Crease explains the enduring fascination with Schrödinger's cat

April 11, 2012

Presidential Candidates Should Debate Science ... Thus Sayeth Religious People

Most people that I know are absolutely disgusted by politicians. No matter what a person's political affiliation, if you're an intelligent person then you want decisions to be based on a firm understanding of the reality of the situation. There may be perfectly valid disagreements about how best to address the problems within this reality, of course, but ultimately no one wants decisions to be made on a faulty understanding of reality.

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March 31, 2012

Pseudophysics

A few weeks ago, I discussed one issue with "physics cranks," as referenced on a podcast by renowned astrophysicist and science communicator Sean Carroll. His main objection was that many of the people who believe they're revolutionizing the fundamental theories of physics do not really understand the existing theories, so they can't really quantify how their theories would resolve the problems which existing theories can solve.

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March 29, 2012

March Big Bang Episodes

The Big Bang Theory season 4 DVD coverThis month had a bit of a lull in episodes of the CBS sitcom The Big Bang Theory, but there were still two great episodes leading up toward the finale. Neither of them were the most science heavy of episodes, although episode 20 did have a classically silly physics knock-knock joke.

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