Saturday, December 01, 2007

Philosophia Naturalis #15 has been published

Sam Wise at Sorting Out Science has put together a great collection of posts. It's a wonderful look at a number of different viewpoints on a lot of recent news in the physical sciences. Thanks, Sam.

You can find links to all previous editions of the carnival, and information on how to submit a blog article or volunteer to host the carnival, at the Philosophia Naturalis home page.

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Friday, October 05, 2007

Philosophia Naturalis #14 has been published

It's now up at Dynamics of Cats, and what a herd it is.

Thanks, Steinn.

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Monday, October 01, 2007

Philosophia Naturalis #14 is coming

After a slightly extended hiatus it will be back on Thursday, October 4 – a date to remember – at the Dynamics of Cats.

Although time is short, if you have a blog post you especially like that relates to the physical sciences or technology, submit it for the carnival – you won't want to miss this special day.

Besides that, it would be nice to see a little more interest in this carnival, so it will be worthwhile to continue. And if you have a blog that deals with some aspect of physical science or technology, please consider volunteering to host the carnival, so we can keep the ball rolling.

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Friday, July 20, 2007

Philosophia Naturalis #12 has been published

And as previously announced, it's at a geocentric view. (And it even appeared on time this month, unlike this notice.) Definitely worth your time to read a bit.

Thanks to mollishka for doing and hosting this month's edition.

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Thursday, July 12, 2007

Philosophia Naturalis #12 call for submissions

Mollishka at a geocentric view will be hosting the next edition of the carnival on Thursday, July 19. The announcement is here.

Submissions should be made by Tuesday night, July 17. An email address for submissions is in the announcement, or you can use this handy form. The editor's area of expertise is astronomy, so I'm sure submissions in that area will be welcome, but so will those in other traditional physical sciences (physics, math, earth science, chemistry, etc.)

Let's make this another great collection of physical science writing.

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Friday, June 29, 2007

Philosophia Naturalis #11 has been published

And it may be the best one yet. If you blog about the physical sciences and you haven't submitted some of your writing for Philosophia Naturalis... well, what's holding you back? You could be in some pretty fine company.

Anyhow, for the latest edition, you'll find it here at Highly Allochthonous, courtesy of Chris Rowan. The layout and presentation is especially clever. Great job, Chris!

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Friday, May 25, 2007

Philosophia Naturalis #10 has been published

By Stuart Coleman at Daily Irreverence. It's full of quantum goodness and other delights. Thanks, Stuart!

And if that whets your appetite for more, be prepared to come back in four weeks for the next edition, which will be hosted June 21 by Chris Rowan at Highly Allochthonous.

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Thursday, May 17, 2007

Philosophia Naturalis #10 is coming May 24

And it will be at Daily Irreverence, courtesy of Stuart Coleman. Check out the details here.

And please send in your suggestions for good blog articles in the physical sciences. (See the announcement for instructions, or look here.)

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Thursday, April 26, 2007

Philosophia Naturalis #9

I'm going to try something a little different this time. There have been (as usual) some interesting news stories in the physical sciences recently, and I'm going to start by featuring blog articles that discuss them. So let's get to work.

Extrasolar planets

Undoubtedly, if judged by number of blog posts, the most popular recent news in the physical sciences has concerned extrasolar planets.

And within this category, the biggest buzz has centered on the announcment of the first discovery of an Earthlike planet, orbiting the red dwarf star Gliese 581. Some of the better articles on this are Planet in the Zone at Dynamics of Cats, Another Earth? at Asymptotia, First possibly Earthlike extrasolar planet found! at Bad Astronomy, A Potentially Habitable Earth-like World at Centauri Dreams and "Habitable planet"? Maybe not! at Astroprof's Page.

As if those (and other references they cite) weren't enough, special attention should be called to this and this at Systemic, because the whole blog is about extrasolar planets and contains additional discussion of the discovery at Gliese 581. No word yet, however, on when the first tourist flights will be offered.

Next up is the detection of water vapor in the atmosphere of a distinctly un-Earthlike gas giant planet called HD 209458b. Centauri Dreams, again, has the story on that: Water Vapor in an Exoplanet’s Atmosphere. This followed close on the heels of the announcement about a month before of the detection of any type of molecule in an exoplanet atmosphere – specifically, HD 209458b and another (HD 189733b). Atmosphere of Exoplanets at Blog Physica has some details. Ironically, it was first thought that water was (surprisingly) not present.

And last but not least, an extensive survey has found that almost 30 out of 69 binary systems between 50 and 200 light years from Earth have at least the disks consisting of dust and debris out of which planets could form – though actual planets have yet to be confirmed. See Multiple Suns? at Astroprof's Page and Double Stars May Be Aswarm with Planets at Centauri Dreams for details.

Neutrino oscillation

This news item is about something that wasn't discovered, and on the whole it might be considered a non-event. However... what wasn't discovered was an experimental violation of the standard model of particle physics. Just the latest in a long string of "failures". Specifically, several years ago an experiment turned up possible evidence that in addition to the three known varieties of neutrinos (corresponding to electrons, muons, and tau particles) there might be others, which hardly interact with anything else at all, and hence were called "sterile" neutrinos. Such neutrinos would be completely outside the standard model. Further efforts have been made to confirm this result... and they found nothing. Yet this "failure" is still noteworthy in itself, as yet another case of being unable to find something specific wrong with the standard model, even though just about everyone believes the model is incomplete.

MiniBooNE Neutrino Result, posted by one of the experimenters, Heather Ray, at Cosmic Variance, gives a thorough account. Additional accounts: The Unsinkable Standard Model at Uncertain Principles, MiniBooNE for Neutrinos at Asymptotia, and Working Blind at Charm &c.

Quantum mechanics

QM also continues to be perplexing to just about everyone, because it's so "unreal". Here "reality" is a technical term that refers to definite properties a system might have even though they cannot be measured directly. (This is sometimes called a "hidden variables" theory.) Einstein hated the idea, implicit in the leading interpretations of QM, that this kind of "reality" was, well, an illusion. But all experiments to date point towards that being the case.

QM Says Goodbye to Reality? at Physics and Physicists calls attention to the latest finding of Anton Zeilinger's group in Austria that further disconfirms the notion of "reality".

As Niels Bohr said, "Anyone who is not shocked by quantum theory has not understood it." Another recent post at Physics and Physicists has some thoughts on that: No One Understands Quantum Mechanics?, as a follow-on to the earlier Why is Quantum Mechanics SO Difficult?

Gamma-ray bursts

There was a brief period of a few months last year when astronomers concerned with gamma-ray bursts thought they had these things largely figured out. GRBs came in just two kinds, and there were fairly good models for both kinds. Or so they thought. But nature continues to surprise. New cases keep turning up that don't quite fit previous models. But that's OK, really. Just some additional circumstances that can produce bursts of gamma-rays in ways that haven't (yet) been anticipated.

Dirk Grupe, writing at Scitizen, discusses the most recent example: Gamma-Ray Burst Afterglow That Challenges Gamma-Ray Burst Theory.

Meanwhile, the 11D Space Surfer at Quasar9 writes on the relation of GRBs to an exotic type of neutron star known as a magnetar: GRBs & Magnetars.

Miscellaneous

And finally, everyone's favorite category: everything else.

Mollishka at A Geocentric View tells us about her recently published research: Variable Stars Near the Galactic Center.

For readers with a philosophical bent, Ponder Stibbons at The truth makes me fret ponders a recent paper of Max Tegmark questioning the validity of the traditional distinction between initial conditions and fundamental laws of physics: Eliminating Initial Conditions — Or Not. And a sequel just showed up today: Confusing Baggage.

As part of an edifying tutorial on concepts of special relativity, Richard Baker at Sharp Blue explains Spacetime and coordinates to us.

Besides GRBs and magnetars, Quasar9 is also interested in the mysteries of black holes: Black Hole (Paradox).

For more along the lines of philosophical musing, Clifford Johnson at Asymptotia offers some observations on an interview with Brian Greene about string theory and suchlike, and in particular with the concept of a "theory of everything": Questions and Answers about Theories of Everything.

And finally, still in the philosophical vein, CuriousCat at The Old Curiosity Shop ruminates on Irreversibility.

Envoi

That wraps it up for this month. PN will be back again next month, on May 24. There's some quantum uncertainty about its precise location (Δx) in cyberspace, but don't worry. In just Δt we should have more information on that. There'll be an update about it here, and further details here.

Update: As promised, here's the scoop on the next edition of PN: It will be hosted by Stuart Coleman at Daily Irreverence on May 24. Watch for a message there about how to suggest an article for the carnival – Stuart and I both hope you'll help us out with some great suggestions.

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Sunday, April 01, 2007

Philosophia Naturalis #8 is (finally) up

And you can find it right here.

We apologize for the delay, but there's some really, really good stuff in this edition. Thanks, Sujit.

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Tuesday, March 13, 2007

Philosophia Naturalis #8 call for submissions

Philosophia Naturalis #8 will be hosted at Sujit Datta's blog metadatta on Thursday, March 29.

If you've recently written or read a noteworthy blog article on physics, math, astrophysics, chemistry, Earth science, advanced technology, or any other physical science topic, read the call for submissions for details of how to submit it for inclusion in the carnival.

Sujit needs the submissions a little early – by March 23 – so don't delay. Send something in now.

Posterity will thank you.

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Friday, March 02, 2007

Philosophia Naturalis #7 - tabloid journalism at its best!

The truly amazing and astounding thing about this edition of Philosophia Naturalis is that it does not contain anything about flying saucers and space aliens!

How could such a government scandal have been hidden so long? But now the truth is finally coming out: UFO science key to halting climate change: former Canadian defense minister
A former Canadian defense minister is demanding governments worldwide disclose and use secret alien technologies obtained in alleged UFO crashes to stem climate change, a local paper said Wednesday.


But wait! There's even more tabloid goodness to this story. You see, it must be Bill Clinton's fault! In fact, Limbaugh says this is all a Liberal scam! Just like global warming itself!

Whatever. After you've digested that little bit of news, head on over to Lorne's place at Geek Counterpoint to read other incredible facts!

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Wednesday, February 21, 2007

Philosophia Naturalis #7 is coming up

It will be up Thursday, March 1, to be more precise, at Geek Counterpoint. But you don't have a lot of time to get your suggestions in – they need to be in to the editor by Monday, February 26. You can send them to the editor as described here, or email them to carnival AT scienceandreason.net.

Do it now. You'll be glad you did.

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Thursday, February 01, 2007

Philosophia Naturalis #6

What I like most about putting together an edition of a blog carnival like this is the opportunity to look carefully at a lot of good science blogging. But one thing I don't especially enjoy is trying to think up some creative "theme" around which to structure the damned thing. There have been some very creative and entertaining themes both in this carnival and in many others. But me, I'd rather just enjoy the articles themselves, and not try to dazzle everyone with some wacky theme, like maybe "Pirates of the Caribbean" or whatever. (I just picked that out of the air; apologies to anyone who's actually used that as a carnival theme.) Anyhow, let's just get down to business.

January, inevitably, is astronomy-astrophysics month, because it starts out with the big meeting of the American Astronomical Society. This year, the 209th meeting was held January 5-10 in Seattle. If (like me) you couldn't attend, there are podcasts available of some of the main plenary sessions.

If you are satisfied just to see brief reviews of some of the highlights, there are a number of those scattered around the relevant science blogs. Phil Plait at the Bad Astronomy Blog wrote up some of the better accounts. Such as this one on dark matter and large-scale structure, and this on things that go boom. See also the live blogging done at the conference by the folks from Nature Newsblog. (I'll try to highlight other meeting reports in a separate blog post.)

However, I can't leave out mention of one of the most important findings reported at the meeting – the spectacular work of the COSMOS project regarding dark matter. Two of the better reports on this come from Sean Carroll at Cosmic Variance and Rob Knop at Galactic Interactions.

At the opposite end of the spectrum, a few, um, "alternative science" proponents managed to sneak into the meeting and exhibit their theories. I'll let Rob Knop fill you in on the gory details.

Ranging a little further afield, in the celestial realms but away from the conference, we have this book review of Paul Davies' Cosmic Jackpot, offered by Alejandro Satz at Reality Conditions. The book deals with the "anthropic principle", which is somewhat controversial...

We're currently in a golden age of observational astrophysics and cosmology, thanks in large part to the many magnificient new instruments that have been deployed in recent years, both on the ground and in space. And it's only going to keep getting better, at least for awhile, due to new instuments which will come on line in the next few years. One of the most exciting of these is the James Webb Space Telescope. (Named for the NASA administrator who guided the Apollo Project, not the newly elected Senator from Virginia.) Centauri Dreams writes about the JWST here and here.

It has recently been discovered that the ancient Greeks possessed much more sophisticated astronomical instruments than had previously been supposed. Lorne Ipsum of Geek Counterpoint tells us about the Antikythera Mechanism of the ancient geeks in a podcast.

Most people, lay watchers of the night skies as well as astronomers and other scientists, find inspiration in the firmament beyond our little planet. A smaller – but very fortunate – number find inspiration in physics too. Sabine Hossenfelder of Backreaction writes eloquently about this here, guest blogging at Asymptotia. Thinking of such things while the Sun is above the horizon can lead to daydreams, and Sabine writes about some recent research in that area too, with a good explanation of fMRI, the latest toy of neuroscientists.

Meanwhile, Asymptotia's host, Clifford Johnson, explains one of the basic concepts of relativity – light cones.

In fact, it's been a big month for physicists explaining some of the basic principles of their science. Jennifer Ouellette of Cocktail Party Physics leads off with concise explanations of ten basic concepts. Jennifer is followed by Chad Orzel at Uncertain Principles, who tells us all about forces, fields, and energy.

And for more advanced physics buffs who don't quail at quantum theory, Matthew Leifer at Quantum Quandries answers the perennial question, What can decoherence do for us?

Of course, physicists these days have quite a lot of explaining to do. Like, for instance, where the heck is that Higgs boson anyhow? John Conway, writing at Cosmic Variance, tells us he's been looking for it for 20 years, and fills us in on many of the details here and here.

Physicists aren't the only scientists with a lot of explaining to do. Mathematicians, normally a reclusive lot, have quite a bit to do as well, and much of it is crucial in physics as well as science in general. Fortunately, we have Adam Gurri at Sophistpundit to tell us about Bayes' Theorem – an important tool of statistical inference in all sciences.

Next up is Arunn Narasimhan of Nonoscience, who gives us a quick introduction to Fourier series – truly a transforming experience. Finally, for the fearless mathophile, Mark Chu-Carroll at Good Math, Bad Math, tells us about fiber bundles, one of the main tools of modern mathematical physics.

Time to kick back and relax. Fractals is a mathematical topic that can be enjoyed purely on an aesthetic level. I wrote a little essay at this blog on fractal art, and then went on with some musings about the nature of art in general.

One last thing before I bid you adieu. I'll leave you with the question, posed at Memoirs of a Postgrad by Paul Baxter – What does cognitive robotics mean?

And please remember to tune in again next month, on March 1, when Lorne Ipsum at Geek Counterpoint will host Philosophia Naturalis #7. Watch his blog and the PN blog for the announcement and further details of how you can have your blog article about physical sciences and/or technology featured in the next edition of PN.

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Tuesday, January 23, 2007

Announcement of Philosophia Naturalis #6

Philosophia Naturalis #6 will be published on Thursday, February 1 right here at Science and Reason.

Don't miss this literally once-in-a-lifetime opportunity to have your favorite article included in Philosophia Naturalis #6. Remember, Philosophia Naturalis is the blogosphere's best blog carnival covering all of physical science and technology.

More information on suggesting articles is here.

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Friday, January 05, 2007

Philosophia Naturalis #5 has been published

Chris Rowan at Highly Allocthonous has posted the 5th edition of Philosophia Naturalis. It's in the form of a great essay about the functions of science blogging. Don't miss it!

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Friday, December 08, 2006

Philosophia Naturalis #4 has been published

Daniel Collins at Down to Earth has posted the 4th edition of Philosophia Naturalis. It's your gateway to interesting science reading, right here.

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Thursday, November 09, 2006

Philosophia Naturalis #3 has been published

And you can find it right now, at geek counterpoint. Don't miss it – it's really good.

Thanks, Lorne, for a fine job.

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Thursday, October 12, 2006

Philosophia Naturalis #2 is published

The second edition of Philosophia Naturalis is now up at Nonoscience. Happy reading!

And thanks to Arunn for putting it all together.

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Saturday, September 30, 2006

Announcement of Philosophia Naturalis #2

Philosophia Naturalis #2 will be published on Thursday, October 12 at Nonoscience -- check there for any further information.

Make it easy on yourself -- don't put off sending your suggestions till the last minute. Submitting an article to the carnival takes very little time (assuming it's already written!) So do it now, and then you won't have to keep thinking about it.

Also, there is now a blog just for information about the carnival. It's called... Philosophia Naturalis. You can check there for announcements of future editions and any other pertinent information, including how to submit an article.

One good way to keep track of what's going on is to add the RSS feed to your favorite reader/aggregator. Then you'll get announcements whenever a new edition is posted.

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