The Connes-Lott-Chamseddine-Barrett model is the observation that the standard model of particle physics — as a classical action functional, but including its coupling to gravity and subsuming a fair bit of fine detail — may succinctly be encoded in terms of operator algebraic data called a “spectral triple“. This involves some non-commutative algebra, and […]
Mirrors are the simplest means to manipulate light propagation. Usually, a mirror is a macroscopic object composed of a very large number of atoms. In the September 23th issue of the Physical Review Letters, Prof. Julien Laurat and his...Show More Summary
I’ve never owned a camera (besides what is in my cell phone and laptop). I want to take pictures at parties and post them online or email them to my friends. A: a compact point and shoot camera is likely the best option- everything is automatic, all you need to do is point the […]
Back before The Pip was born, our previous departmental administrative assistant used to bug me– in a friendly way– about how Kate and I ought to have another kid. (She had two kids of her own, about two years apart in age.) “When are you guys going to have another baby?” she would ask, and…
Jen-Luc Piquant took a week off from compiling cool physics links, but she's back now! A breakthrough quantum "cat state" experiment with iodine molecules, a new distance record for quantum teleportation, and how Moneyball's basic strategy could help researchers better...
Before decoupling, photons and charged particles were in good thermal contact: though the primordial plasma might have varied in temperature from place to place, the photons and baryons were in local thermal equilibrium and shared a common temperature. If some physical process caused the baryons to heat up in some place, this change in […]
A while back Tushna Commissariat of Physics World came to talk with me at Columbia, partly to discuss the topic of “Not Even Wrong, ten years later”, and that has now been turned into a podcast available as Still Not … Continue reading ?
First, congratulations! Camera technology has advanced to the point where a complete novice, using an entry-level camera right out of the box, can take photos that (under certain circumstances) appear identical to professional photos. Regardless if you only use your camera on the ‘automatic’ setting or if you explore the art of photography, the most […]
Author(s): Philip Ball Up to 75% of light reflects from just 2000 atoms aligned along an optical fiber, an arrangement that could be useful in photonic circuits. [Physics 9, 109] Published Fri Sep 23, 2016
New fabric could be used in artificial muscles and smart clothing
Ten years after his infamous anti-string-theory book, Peter Woit thinks the subject is more tangled than ever
Today's selection of need-to-know updates from the world of physics
Imagine pulling or compressing a block of soft material—like rubber—equally in all directions. You wouldn't expect the block to deform much because of the nature of the material. However, in 1948, an applied mathematician named Ronald Rivlin predicted that with the right amount of tensile force, a thick cube of soft material would suddenly deform into a thin, flat plate.
A world record for a trapped field in a superconductor, was achieved in 2014 by a team of engineers led by Professor David Cardwell.
The energy landscape in Europe is changing rapidly and the percentage of renewables is steadily increasing. For example, in Germany, solar and wind power provided an average of 33% of the total electricity production in 2015. And the phase-out of nuclear power, as part of the country's energy transition or Energiewende, will result in the expansion of the local electricity grid.
MEPhI researchers have created the world's first formula to describe the separative power of a concurrent centrifuge for binary mixture, which will improve the devices' efficiency.
A pioneering physicist at the Lawrence Berkeley National Laboratory has died.
A new model shows that tissue growth is crucial for explaining the formation of hierarchical and optimized vascular networks, such as those seen in plants and animals. [Physics] Published Thu Sep 22, 2016
New technology could help to link-up quantum devices
Workshop: 13 Feb 2017 - 17 Feb 2017, Dresden, Germany. Organized by Andreas Buchleitner and Juan-Diego Urbina.