Posts

November 28, 2014

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12:22 AM | Black holes and coffee - Scientists & Engineers on Sofas...
Black holes and coffee - Scientists & Engineers on Sofas (and other furnishings) Over a cup of coffee, astrophysicist Dan Evans chats about black holes, his research and what’s on the horizon. By: National Science Foundation.

November 27, 2014

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9:54 PM | What If The Moon Disappeared? Without the moon, how would...
What If The Moon Disappeared? Without the moon, how would Earth’s environment be affected? Would we survive? By: BrainStuff.
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9:00 PM | An "Impenetrable Barrier" Protects The Earth From Killer Electrons
It appears that our planet's built-in force field is much stronger than we thought. Scientists studying the Van Allen belts have discovered the presence of a nearly impenetrable barrier that prevents some of the fastest and most powerful "ultrarelativistic" electrons from reaching the surface.Read more...
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1:17 PM | The medieval bishop who helped to unweave the rainbow | Michael Brooks
A 13th century bishop and his 21st century collaborators are up for a research award on Thursday night for their work on the science of lightLast week I found myself in the strange position of doing science experiments as part of the Festival of Humanities. Even more unlikely was the setting: the majestic, medieval Durham Cathedral. We were certainly an odd gathering – my group included a Reiki healer, an anthropologist and an architect – and our foray into science was supervised by […]
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11:08 AM | The dance of Pendulums- Pendulum waves (Video)
The beauty of science and the conception of art. Pendulum Waves are a great example of a kinetics sculpture working on simple harmonics. Whats brilliant about these structures is that it runs on simple physics, that takes 15 balls and suspends them at different, well calculated lengths. The Pendulums are placed in increasing order of length of the pendulum, so while the longest

November 26, 2014

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10:21 PM | The Most Precise Signal in the Universe (Synopsis)
“We… are what happens when a primordial mixture of hydrogen and helium evolves for so long that it begins to ask where it came from.” -Jill Tartar But that doesn’t mean we can’t also look to the hydrogen itself, and use its information to learn about where other things may have come from! An extraordinary example…
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7:27 PM | Quantum Cheshire Cat Quantum Cheshire Cat discussed by...
Quantum Cheshire Cat Quantum Cheshire Cat discussed by Professor Mike Merrifield from the University of Nottingham. Nature paper on this: http://bit.ly/1z2j00m Experiment pics courtesy of Tobias Denkmayr Cat drawn by Knut Johannes Håland Music by Alan Stewart By: Sixty Symbols.
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7:00 PM | Used Tips – ‘Coxy’
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5:24 PM | A Disturbance In The Force: 'Giant' Charge Density Oscillation Discovered In Nanomaterials
In metals like copper and aluminium, conduction electrons move around freely, in the same way as particles in a gas or a liquid. But when impurities are introduced into the metal's crystal lattice, electrons cluster together in a uniform pattern around the point of interference, resembling the ripples that occur when a stone is thrown into a pool of water. Scientists have now discovered how to strengthen these Friedel oscillations and focus them, almost like using a lens, in different […]
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4:01 PM | The Science And Engineering Of Macy's Thanksgiving Day Balloons
They're cute and fat and take real engineering to get up into the air. I'm talking about the iconic balloons in Macy's Thanksgiving Day Parade.
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3:30 PM | PNAS: Asad Aboobaker, Thermal Engineer
I’ve decided to do a new round of profiles in the Project for Non-Academic Science (acronym deliberately chosen to coincide with a journal), as a way of getting a little more information out there to students studying in STEM fields who will likely end up with jobs off the “standard” academic science track. Sixth in…
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3:00 PM | Quantum Thermodynamics IV: Negative absolute temperatures
Almost everyone with basic knowledge of physics have one clear concept, there is a minimum temperature and it is called ‘absolute zero’. This temperature corresponds […] Read more The post Quantum Thermodynamics IV: Negative absolute temperatures appeared first on Mapping Ignorance. Related posts:Non-trivial biological quantum effects The ongoing debate about the foundations of quantum mechanics Massive quantum entanglement
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1:57 PM | Physicists Explain Why Dogs are Sloppy Drinkers
A team of scientists led by Dr Sunghwan Jung of Virginia Tech has identified and modeled the fluid dynamics at play when dogs (Canis lupus familiaris) drink water. If you’ve ever watched a dog drinks water, you know that it can be a spilly, splashy affair. Behind all of the happy, wet messes, however, lies [...]
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1:11 AM | How to be an Archery Superhero With the Hunger Games sequel...
How to be an Archery Superhero With the Hunger Games sequel coming out this week, we thought we’d look into the science of archery with this fun twist. We teamed up with Archery360.org to help bring this short to you and guess what, we’ve got full lesson plans with this video for both middle school and high school classes. That means, if you’re going to show it in class and want to take it to the next level, we’ve done the legwork and made a lesson for you. To get […]

November 25, 2014

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10:27 PM | Physics at the Universe’s Limits (Synopsis)
When you think about cosmology and the fundamental questions scientists are trying to address, you inevitably wind up thinking about dark matter, dark energy and black holes as the three biggest topics that shape our view of the Universe. But there are plenty of other aspects to this branch of science that deserve at least…
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10:17 PM | Blu-ray solar power
  So here’s something you don’t see everyday. Blu-ray disks, you know the stuff we use for video games or DVDs also improve the performance of solar cells—suggesting a second […]

Smith, A., Wang, C., Guo, D., Sun, C. & Huang, J. (2014). Repurposing Blu-ray movie discs as quasi-random nanoimprinting templates for photon management, Nature Communications, 5 5517. DOI: 10.1038/ncomms6517

Citation
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10:17 PM | Blu-ray solar power
  So here’s something you don’t see everyday. Blu-ray disks, you know the stuff we use for video games or DVDs also improve the performance of solar cells—suggesting a second […]

Smith, A., Wang, C., Guo, D., Sun, C. & Huang, J. (2014). Repurposing Blu-ray movie discs as quasi-random nanoimprinting templates for photon management, Nature Communications, 5 5517. DOI: 10.1038/ncomms6517

Citation
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10:17 PM | Blu-ray solar power
  So here’s something you don’t see everyday. Blu-ray disks, you know the stuff we use for video games or DVDs also improve the performance of solar cells—suggesting a second […]

Smith, A., Wang, C., Guo, D., Sun, C. & Huang, J. (2014). Repurposing Blu-ray movie discs as quasi-random nanoimprinting templates for photon management, Nature Communications, 5 5517. DOI: 10.1038/ncomms6517

Citation
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10:13 PM | LHC's 'Heart' Starts Pumping Protons Ahead of 2015 Restart
While on its long road to restart, yet another milestone was reached at the Large Hadron Collider (LHC) over the weekend.
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8:37 PM | The Cusp of Knowing and the Evolution of Science
In a nice piece on his Scientific American blog ‘Cross-Check‘, John Horgan recently gave me some much appreciated praise, whilst provoking discussion on a contentious subject –... -- Read more on ScientificAmerican.com
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5:49 PM | Total Energy Paul Andersen explains how the total energy of a...
Total Energy Paul Andersen explains how the total energy of a system is the combination of kinetic, potential and internal energy of the objects. He then shows you how to calculate the kinetic energy, gravitational potential energy, and elastic potential energy of objects within a system. Over time the total energy of the system will change due to changes in position and frictional effects. By: Bozeman Science.
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5:13 PM | How To Make Extra-Efficient Solar Panels Using Old Blu-Ray Discs
You probably don't think of them that way, but Blu-ray discs have a gorgeous color. In fact, the same physics that gives butterfly wings and housefly eyes their iridescent…
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4:55 PM | Is the Wormhole in 'Interstellar' Possible?
Sci-fi fans who hope humanity can one day zoom to distant corners of the universe via wormholes, as astronauts do in the recent film 'Interstellar,' shouldn't hold their breath.
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4:05 PM | U.S. Particle Physics Program Aims for the Future
In the last few years, stories have abounded in the press of the successes of the Large Hadron Collider, most notably the discovery of the Higgs boson. This has led some to speculate that European... -- Read more on ScientificAmerican.com
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4:00 PM | This Weird Vintage Airplane Flies With Cylinders Instead Of Wings
The Flettner Airplane made its debut in the 1930s. Instead of wings, it flies using rotating cylinders that stick out from either side of its body. We'll tell you about its inventor, and show you how it flies.Read more...
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2:25 PM | In breve: la cascata dei barioni
In maniera semplice si può parlare di meccanica quantistica nel momento in cui si descrivono le proprietà delle particelle utilizzando i numeri interi. Fatti quei primi passi all'inizio del XX secolo, come fisici abbiamo descritto le particelle utilizzando i così detti numeri quantici in grande abbondanza: la loro scoperta era sempre legata alla scoperta di nuovi decadimenti che non potevano essere altrimenti spiegati senza violare la conservazione di un qualche numero […]

Gell-Mann, M. (1964). A schematic model of baryons and mesons, Physics Letters, 8 (3) 214-215. DOI: 10.1016/S0031-9163(64)92001-3

Alvarez L., Eberhard P., Good M., Graziano W., Ticho H. & Wojcicki S. (1959). Neutral Cascade Hyperon Event, Physical Review Letters, 2 (5) 215-219. DOI: http://dx.doi.org/10.1103/physrevlett.2.215

Chatrchyan, S. et al (CMS Collaboration) (2012). Observation of a New $\Xi_b$ baryon, Physical Review Letters, 108 (25) DOI: 10.1103/PhysRevLett.108.252002

Barnes V., Connolly P., Crennell D., W. Delaney, W. Fowler, P. Hagerty, E. Hart, N. Horwitz, P. Hough & J. Jensen & (1964). Observation of a Hyperon with Strangeness Minus Three, Physical Review Letters, 12 (8) 204-206. DOI: http://dx.doi.org/10.1103/physrevlett.12.204

Citation
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2:25 PM | In breve: la cascata dei barioni
In maniera semplice si può parlare di meccanica quantistica nel momento in cui si descrivono le proprietà delle particelle utilizzando i numeri interi. Fatti quei primi passi all'inizio del XX secolo, come fisici abbiamo descritto le particelle utilizzando i così detti numeri quantici in grande abbondanza: la loro scoperta era sempre legata alla scoperta di nuovi decadimenti che non potevano essere altrimenti spiegati senza violare la conservazione di un qualche numero […]

Gell-Mann, M. (1964). A schematic model of baryons and mesons, Physics Letters, 8 (3) 214-215. DOI: 10.1016/S0031-9163(64)92001-3

Alvarez L., Eberhard P., Good M., Graziano W., Ticho H. & Wojcicki S. (1959). Neutral Cascade Hyperon Event, Physical Review Letters, 2 (5) 215-219. DOI: http://dx.doi.org/10.1103/physrevlett.2.215

Chatrchyan, S. et al (CMS Collaboration) (2012). Observation of a New $\Xi_b$ baryon, Physical Review Letters, 108 (25) DOI: 10.1103/PhysRevLett.108.252002

Barnes V., Connolly P., Crennell D., W. Delaney, W. Fowler, P. Hagerty, E. Hart, N. Horwitz, P. Hough & J. Jensen & (1964). Observation of a Hyperon with Strangeness Minus Three, Physical Review Letters, 12 (8) 204-206. DOI: http://dx.doi.org/10.1103/physrevlett.12.204

Citation
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2:25 PM | In breve: la cascata dei barioni
In maniera semplice si può parlare di meccanica quantistica nel momento in cui si descrivono le proprietà delle particelle utilizzando i numeri interi. Fatti quei primi passi all'inizio del XX secolo, come fisici abbiamo descritto le particelle utilizzando i così detti numeri quantici in grande abbondanza: la loro scoperta era sempre legata alla scoperta di nuovi decadimenti che non potevano essere altrimenti spiegati senza violare la conservazione di un qualche numero […]

Gell-Mann, M. (1964). A schematic model of baryons and mesons, Physics Letters, 8 (3) 214-215. DOI: 10.1016/S0031-9163(64)92001-3

Alvarez L., Eberhard P., Good M., Graziano W., Ticho H. & Wojcicki S. (1959). Neutral Cascade Hyperon Event, Physical Review Letters, 2 (5) 215-219. DOI: http://dx.doi.org/10.1103/physrevlett.2.215

Chatrchyan, S. et al (CMS Collaboration) (2012). Observation of a New $\Xi_b$ baryon, Physical Review Letters, 108 (25) DOI: 10.1103/PhysRevLett.108.252002

Barnes V., Connolly P., Crennell D., W. Delaney, W. Fowler, P. Hagerty, E. Hart, N. Horwitz, P. Hough & J. Jensen & (1964). Observation of a Hyperon with Strangeness Minus Three, Physical Review Letters, 12 (8) 204-206. DOI: http://dx.doi.org/10.1103/physrevlett.12.204

Citation
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2:25 PM | In breve: la cascata dei barioni
In maniera semplice si può parlare di meccanica quantistica nel momento in cui si descrivono le proprietà delle particelle utilizzando i numeri interi. Fatti quei primi passi all'inizio del XX secolo, come fisici abbiamo descritto le particelle utilizzando i così detti numeri quantici in grande abbondanza: la loro scoperta era sempre legata alla scoperta di nuovi decadimenti che non potevano essere altrimenti spiegati senza violare la conservazione di un qualche numero […]

Gell-Mann, M. (1964). A schematic model of baryons and mesons, Physics Letters, 8 (3) 214-215. DOI: 10.1016/S0031-9163(64)92001-3

Alvarez L., Eberhard P., Good M., Graziano W., Ticho H. & Wojcicki S. (1959). Neutral Cascade Hyperon Event, Physical Review Letters, 2 (5) 215-219. DOI: http://dx.doi.org/10.1103/physrevlett.2.215

Chatrchyan, S. et al (CMS Collaboration) (2012). Observation of a New $\Xi_b$ baryon, Physical Review Letters, 108 (25) DOI: 10.1103/PhysRevLett.108.252002

Barnes V., Connolly P., Crennell D., W. Delaney, W. Fowler, P. Hagerty, E. Hart, N. Horwitz, P. Hough & J. Jensen & (1964). Observation of a Hyperon with Strangeness Minus Three, Physical Review Letters, 12 (8) 204-206. DOI: http://dx.doi.org/10.1103/physrevlett.12.204

Citation

November 24, 2014

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10:28 PM | Crazy Pool Vortex  We’ve all seen it. Drag your hand, a...
Crazy Pool Vortex  We’ve all seen it. Drag your hand, a paddle, or a round dinner plate across the surface of the water, and you’ll see whirlpool-like vortices spiraling away from you like submerged cyclones. Hold on a sec… water is transparent. Where did those two shadows come from? And what makes those spinning tornadoes travel the way they do across the water’s surface? In this awesome video from Physics Girl, you’ll find out the answers to those […]
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