Posts

October 20, 2014

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12:11 AM | Newton’s Second Law Paul Andersen explains how...
Newton’s Second Law Paul Andersen explains how Newton’s Second Law applies when a net force acts on a body. The net force vector and the acceleration vector will act in the same direction. If an object acts on another object in a system the center of mass of the system will experience no acceleration. By: Bozeman Science.

October 19, 2014

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8:54 PM | Einstein’s brilliant mistake: Entangled states When you...
Einstein’s brilliant mistake: Entangled states When you think about Einstein and physics, E=mc^2 is probably the first thing that comes to mind. But one of his greatest contributions to the field actually came in the form of an odd philosophical footnote in a 1935 paper he co-wrote — which ended up being wrong. Chad Orzel details Einstein’s “EPR” paper and its insights on the strange phenomena of entangled states. View full lesson: […]
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4:49 PM | The Cone of Invisibility Invisibility - it’s something...
The Cone of Invisibility Invisibility - it’s something we’ve sought after for years, not just as Harry Potter and Klingon enthusiasts, but for practical purposes of concealment. But is there a way to hide something without the use of camouflage? Is there such a thing as cloaking? As the University of Rochester shows— yes! Kim Horcher and Bryan Forrest (Video Game High School, Man at Arms) discuss! Watch the video from The University of Rochester: […]
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7:05 AM | Understanding Quantum Tunnelling | Jon Butterworth | Life & Physics
Quantum tunnelling sounds like science fiction, and does indeed feature quite often in the genre. But it is real, and plays a role in nuclear fusion, chemical reactions and the fate of the universe. Heres how it worksThe recent claim from Stark Industries Lockeed Martin that a compact fusion reactor could be built soon is, if true, a breakthrough in engineering rather than basic physics. The basic physics of fusion has been known for some time, and a key element of understanding it is […]

October 18, 2014

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9:53 PM | ALPHA GENOMIX
ALPHA GENOMIX LABORATORIES INC Alpha genomics (for those unfamiliar with their spelling) Re: Dr. Hani El Shawa, who is first author of Prenatal Ethanol Exposure Disrupts Intraneocortical Circuitry, Cortical Gene Expression, and Behavior in a Mouse Model of FASD. The...Read more
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7:39 PM | Morsels For The Mind – 17/10/2014
Every day we provide you with Six Incredible Things Before Breakfast to nibble away at. Here you can fill your brain with the most intellectually stimulating “amuse bouches” from the past week – a veritable smorgasbord for the cranium. They’re all here for you to load up your plate – this week’s “Morsels for the mind”. Enjoy! If you do nothing else, make sure to check out the “Reads / views / listens of the week”. **** Feather, fur […]
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7:39 PM | Morsels For The Mind – 17/10/2014
Every day we provide you with Six Incredible Things Before Breakfast to nibble away at. Here you can fill your brain with the most intellectually stimulating “amuse bouches” from the past week – a veritable smorgasbord for the cranium. They’re all here for you to load up your plate – this week’s “Morsels for the mind”. Enjoy! If you do nothing else, make sure to check out the “Reads / views / listens of the week”. **** Feather, fur […]
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4:30 PM | Don’t Get Too Excited – No One Has Cracked Nuclear Fusion Yet
Aerospace giant Lockheed Martin's announcement this week that it could make small-scale nuclear fusion power a reality in the next decade has understandably generated excitement in the media. Physicists, however, aren't getting their hopes up just yet.Read more...
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9:59 AM | Physics Week in Review: October 18, 2014
It was Ada Lovelace Day this past week, So Here’s The Life And Times Of Ada Lovelace, The First Computer Programmer.  Related: Beyond Emmy (Noether) and Sophie (Germain): Resources for Learning... -- Read more on ScientificAmerican.com
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9:13 AM | From Mindless Physics To Physics Of Mind
       For the sake of clarity, let us consider the two widely known, nonsensical scenarios: The first is one that many scientists charge ‘idealist’ philosophers with, although no thinker beyond the dorm room bong level holds this view: All is just a dream and there is no physical world. The second nonsensical scenario is that a physical world “really exists independently out there” and it happens to be the case that consciousness arises in […]
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9:13 AM | From Mindless Physics To Physics Of Mind
       For the sake of clarity, let us consider the two widely known, nonsensical scenarios: The first is one that many scientists charge ‘idealist’ philosophers with, although no thinker beyond the dorm room bong level holds this view: All is just a dream and there is no physical world. The second nonsensical scenario is that a physical world “really exists independently out there” and it happens to be the case that consciousness arises in […]

October 17, 2014

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8:54 PM | What colour is a mirror? | At-Bristol Science Centre How does a...
What colour is a mirror? | At-Bristol Science Centre How does a mirror work? Ross of the Live Science Team investigates the properties of light, mirrors and fibre optic cables to answer the question: what colour is a mirror? By: At-Bristol
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2:07 PM | John Stewart Bell Prize: Nominations Wanted
In odd-numbered years (by the Gregorian calendar, anyway), the University of Toronto offers the John Stewart Bell Prize for Research on Fundamental Issues in Quantum Mechanics and Their Applications. This is not connected to the Jon Stewart of the Daily Show– he’s purely classical, as you can tell from the fact that there’s no “h”…
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11:00 AM | No ‘No-bel’ Burnell
The Nobel prize train has left the station for another year and – oh well – yet again myself, and admittedly many others, are left standing on the station platform looking forlornly as Science-fame chugs off over the horizon. Keep on dreaming eh? Inevitably there is focus on the winners this year, but what about those who […]
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5:54 AM | Throwback Thursday: The Foolish Fallacy of Cold Fusion (Synopsis)
“Between cold fusion and respectable science there is virtually no communication at all. …because the Cold-Fusioners see themselves as a community under siege, there is little internal criticism. Experiments and theories tend to be accepted at face value, for fear of providing even more fuel for external critics, if anyone outside the group was bothering…

October 16, 2014

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8:59 PM | Network Theory Seminar (Part 2)
  This time I explain more about how ‘cospans’ represent gadgets with two ends, an input end and an output end: I describe how to glue such gadgets together by composing cospans. We compose cospans using a category-theoretic construction called a ‘pushout’, so I also explain pushouts. At the end, I explain how this gives […]
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3:27 PM | Entangled States at TED-Ed
The fourth video I wrote for TED-Ed is now live: Einstein’s Brilliant Mistake: Entangled States. The title is not just an Elvis Costello reference, but gets at the fact that while the Einstein, Podolsky, and Rosen paper was wrong in that the local hidden variable theories they favored are impossible, it turned out to be…
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1:12 PM | The E-cat: cold fusion or scientific fraud? (Synopsis)
“There’s a mark born every minute, and one to trim ‘em and one to knock ‘em.” -David W. Maurer, The Big Con (1940) But how could you tell? There’s lots of amazing science going on out there, and none of us can be experts in it all. Moreover, even when we think we know how things…
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12:52 PM | The Copernicus Complex by Caleb Scharf
I enjoyed Caleb Scharf’s previous book, Gravity’s Engines a good deal, so I was happy to get email from a publicist offering me his latest. I’m a little afraid that my extreme distraction of late hasn’t really treated it fairly, but then again, the fact that I finished it at all in my current state…
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10:22 AM | No Light Dark Matter In ATLAS Search
Yesterday the ATLAS collaboration published the results of a new search for dark matter particles produced in association with heavy quarks by proton-proton collisions at the CERN Large Hadron Collider. Not seeing a signal, ATLAS produced very tight upper limits on the cross section for interactions of the tentative dark matter particle with nucleons, which is the common quantity on which dark matter search results are reported. The cross section is in fact directly proportional to the rate at […]
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9:10 AM | Selfie from space!
Hello again, Rosetta! After a ten year journey, the spacecraft is only 16km from the comet it’s been sent to …Continue reading →
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4:15 AM | Rosetta’s Tale
Origins In 1799 a French engineer stumbled upon what was to be one of the greatest archaeological finds in all of human history. On an expedition to Egypt with the purpose of undermining competitors’ trade interests to the East, an important stone covered in engravings was found and identified near the Nile Delta. British forces […] The post Rosetta’s Tale appeared first on HeadStuff.

October 15, 2014

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8:53 PM | Let's Get Small: A Panel on Nanoscience
Scientific American senior editor Josh Fischman joins nanoscience researchers Shana Kelly, Yamuna Krishnan, Benjamin Bratton and moderator Bridget Kendall from the BBC World Service program The... -- Read more on ScientificAmerican.com
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8:00 PM | Nutrient-dependent gene duplication in plants (but not animals?)
Divergence of Gene Body DNA Methylation and Evolution of Plant Duplicate Genes Excerpt 1) “A recent study demonstrated that the DNA methylation in promoter may play a significant role for functional divergence of duplicated genes in human [48].” Excerpt 1...Read more
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3:42 PM | Lockheed Martin claims “technological breakthrough” in compact fusion
But details as to what the breakthrough is are missing.
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3:10 PM | Mystery Solved? How Birds Weather Turbulence
When turbulence hits, flying birds can't fasten their seatbelts—so at least one species of eagle tucks its wings to stabilize flight, a new study says.
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9:59 AM | Original Recipe
Relativity and Baseball Going back to the original idea of relativity — simply looking at the relative motion between objects, and the idea that you are allowed to look at the physics in the reference frame that makes the analysis the easiest. The other thing [besides analyzing momentum] you can do is to invoke relativity [...]
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12:11 AM | Strong Nuclear Force Paul Andersen explains how the strong...
Strong Nuclear Force Paul Andersen explains how the strong nuclear force holds the nucleus together in spite of repulsive electrostatic charges acting on the nucleons. Mesons exchanged between nucleons keep the nucleus intact and gluons exchanged between the quarks achieve the same goal within the nucleons. The strong nuclear force accounts for the nuclear binding force in all atoms. Uploaded by: Bozeman Science.

October 14, 2014

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4:11 PM | Schrödinger’s Cat at TED-Ed
The third of the videos I wrote for TED-Ed is now live: Schrödinger’s Cat: A Thought Experiment in Quantum Mechanics.This is using basically the same argument I outlined in this post, but with awesome animation courtesy of Agota Vegso. I’m impressed by how close the images that ended up in the video are to the…
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1:12 PM | Relativity and Baseball
It’s baseball playoff time, so sport shows are full of one of the great mysteries of the season, exemplified by this .gif (from SBNation): No, not “Raul Ibanez, really?” but “How can he make the ball go that far?” After all, even very good outfielders are lucky to reach home plate with a throw from…
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