Follow us: Follow us on Facebook Follow us on Twitter Follow us on Google+ Follow us on Linkedin Follow us on Tumblr Subscribe to our RSS or Atom feed
Tuesday, March 31, 2015
Southern Weather Radar


Our Writers

  • Adam Peck
  • Alan Gordon
  • Alex Kearns
  • Alex Seitz-Wald
  • Alice Murray
  • Allison Korn
  • Alyssa Cagle
  • Amanda Marcotte
  • Amanda Peterson Beadle
  • Andrea Grimes
  • Andrea Lee Meyer
  • Andrew Bowen
  • Andy Brack
  • Andy Kopsa
  • Andy Miller
  • Andy Schmookler
  • Ann Marie Pace
  • Ann Woolner & Leonard Ray Teel
  • Anna Dolianitis
  • Anna Forbes and Kate Ryan
  • Annelise Thim
  • Anoni Muss
  • April Adams
  • April Moore
  • Ariel Harris
  • Armando
  • Arthur Blaustein
  • Austen Risolvato
  • Austin McMurria
  • Barry Hollander
  • Bert Roughton III
  • Beth Ostlund
  • Betsey Dahlberg
  • Bill Hamm
  • Bill Mankin
  • Bill Montgomery
  • Bill Moyers & Michael Winship
  • Bill Phillips
  • Bill Semple
  • Bill Tush
  • Billy Howard
  • Bob Bohanan
  • Bob Pritchard
  • Booth Malone
  • Bootsie Lucas
  • Boyd Lewis
  • Brad Clayton
  • Braden Goyette For ProPublica
  • Brett Martin
  • Brian Randall
  • Brianna Peterson
  • Bruce Dixon
  • Bruce E. Levine
  • Burton Cox
  • Candice Dyer
  • Carl Kline
  • Carol Carter
  • Casey Hayden
  • Cathleen Hulbert
  • Center for American Progress
  • Chantille Cook
  • Charles Finn
  • Charles O. Hendrix Jr.
  • Charles Seabrook
  • Charles Walston
  • Chelsea Toledo
  • Chelsey Willis
  • Chris Bowers
  • Chris Kromm
  • Chris Wohlwend
  • Christopher Burdette
  • Chrys B. Graham
  • Chuck Collins
  • Cliff Green
  • Cody Maxwell
  • Collin Kelley
  • Craig Miller
  • Crissinda Ponder
  • Dallas Lee
  • Dan Kennedy
  • Daniel Flynn
  • Daniel K. Williams
  • Daniel Palmer
  • Danny Fulks
  • Dante Atkins
  • Darby Britto
  • Dave Cooley
  • Dave Johnson
  • Dave Pruett
  • David Bradford
  • David Evans
  • David Harris-Gershon
  • David Jenks
  • David Kyler
  • David Rotenstein
  • David Swanson
  • Dean Baker
  • Deb Barshafsky
  • Debbie Houston
  • Deborah Chasteen
  • Denise Oliver Velez
  • Dennis McCarthy
  • Desiree Evans
  • Dian Cai
  • Diana
  • Dina Rasor
  • Dindy Yokel
  • Doc
  • Don Lively
  • Don O'Briant
  • Door Guy
  • Doug Couch
  • Doug Cumming
  • Dr. Brian Moench
  • Dr. Nick De Bonis
  • E. David Ferriman
  • Earl Fisher
  • Eden Landow
  • Eileen Dight
  • Eleanor Ringel Cater
  • Elizabeth Shugg
  • Ellen Brown
  • Elliott Brack
  • Erin Kotecki Vest
  • Fatima Najiy
  • FishOutofWater
  • Francisco Silva
  • Frank Povah
  • Fred Brown
  • Frederick Palmer
  • Gadi Dechter, Michael Ettlinger
  • Gail Kiracofe
  • Gaius
  • Georgia Logothetis
  • Gib Ennis
  • Gina Williams
  • Gita M. Smith
  • Glenn Overman
  • Gordon Anderson
  • Gregory C. Dixon
  • Gryphon Corpus
  • Hamp Skelton
  • Harriet Barr
  • Heather Boushey
  • Henry Dreyer
  • Hollis B. Ball III
  • Hugh
  • Hyde Post
  • Ian Kim
  • Ian Millhiser
  • Isabel Owen
  • Ivy Brashear
  • J.A. Myerson
  • Jack deJarnette
  • Jack Wilkinson
  • Jacklyn C. Citero
  • Jake Olzen
  • James Hataway
  • James Marc Leas
  • James N. Maples
  • Janet Ward
  • Jasmine Burnett
  • Jason Palmer
  • Jason Parker
  • Jay Thompson
  • Jeff Cochran
  • Jeff Davis
  • Jeff Rayno
  • Jeff Spross
  • Jennifer Hill
  • Jesse Harwell
  • Jessica Luton
  • Jim Bentley and Jeff Nesmith
  • Jim Clark
  • Jim Cobb
  • Jim Fitzgerald
  • Jim Newell
  • Jim Stovall
  • Jim Walls
  • Jim Warren
  • Jimmy Booth
  • Jing Luo
  • Jingle Davis
  • Joan Donovan
  • Jodi Jacobson
  • Jody Wegmueller
  • Joe Earle
  • Joe Shifalo
  • Joel Groover
  • Joey Ledford
  • John A. Tures
  • John Dembowski
  • John Hickman
  • John M. Williams
  • John Manasso
  • John Sugg
  • John Tabellione
  • John Yow
  • Jon Sinton
  • Jonathan Grant
  • Jonathan Odell
  • Joni Hunnicutt
  • Jonna Pattillo
  • Joseph B. Atkins
  • Joseph Gatins
  • Josh Dorner
  • Josh Sewell
  • Joy Moses
  • Judith Stough
  • Judy McCarthy
  • Juli Ward
  • Julian Bond
  • Julianne Wyrick
  • Julie Ajinkya
  • Julie Puckett Fodera
  • Just Plain Will
  • Kaili Joy Gray
  • Kate Greer
  • Kate McNally
  • Kathleen Brewin Lewis
  • Kathleen Harbin
  • Kathleen R. Gegan
  • Kathryn Hoffman
  • KC Wildmoon
  • Keith Graham
  • Ken Edelstein
  • Ken Haldin
  • Ken Peacock
  • Kevin Austin
  • Kevin Duffy
  • Kip Burke
  • Kirk McAlpin
  • Kirsten Barr
  • Kos Moulitsas
  • Kristie Macrakis
  • Lacey Avery
  • Lamont Cranston
  • Laura Clawson
  • Laura Smith
  • Laurence Lewis
  • Lawrence S. Wittner
  • Lee Leslie
  • Lee Robin
  • Leonce Gaiter
  • Les Eatwell
  • LikeTheDew
  • Linda Hunt Beckman
  • Linda Jordan Tucker
  • Lisa Byerley Gary
  • Lisa Kerr
  • Lois Beckett, Propublica
  • Lorraine Berry
  • Louie Clay
  • Louis Mayeux
  • Lovell Jones, Ph.D.
  • Lucy Emerson Sullivan
  • Lucy Guest
  • Maggie Lee
  • Maisha White
  • Mandy Richburg Rivers
  • Margi Ness
  • Marian Wang, ProPublica
  • Marie Diamond
  • Mark Dohle
  • Mark Johnson
  • Mark Sumner
  • Martha W. Fagan
  • Mary Civille
  • Mary Elizabeth King
  • Mary Kay Andrews
  • Mary Lee
  • Mary Willis Cantrell
  • Matt Johnson
  • Matt Musick
  • Matt Renner
  • Matthew Wright
  • Maurice Carter
  • Meg Livergood Gerrish
  • Meghan Miller
  • Melanie Rochat
  • Melinda Ennis
  • Michael Beckel
  • Michael Castengera
  • Michael Ettlinger
  • Michael J. Solender
  • Michael Linden
  • Michael Lux
  • Michael W. Twitty
  • Mike Copeland
  • Mike Cox
  • Mike Handley
  • Mike Lofgren
  • Mike Ludwig
  • Mike Williams
  • Mike ”Hunter” Lazzaro
  • Mimi Skelton
  • Moni Basu
  • Monica Smith
  • Murray Browne
  • Myra Blackmon
  • Nancy Melton
  • Nancy Puckett
  • Nancy Robinson
  • Nancy Rogers
  • Neill Herring
  • Nelly McDaid
  • Nikki Gardner
  • Niles Reddick
  • Noel Holston
  • Occupy Wall Street
  • Overman & Senn
  • Pamela Sumners
  • Pat Garofalo
  • Pat LaMarche
  • Patrick L. Ledford
  • Patsy Dickey
  • Patti Ghezzi
  • Paul Krupin
  • Paul Rutledge
  • Paul Thim
  • Pete & Jack
  • Peter Crawford
  • Peter Turnbull
  • Phil Gast
  • Phil Noble
  • Philip Graitcer
  • Phyllis Alesia Perry
  • Phyllis Gilbert
  • Piney Woods Pete
  • R. P. Singletary
  • R.L. Miller
  • Rafael Alvarez
  • Randy Conway
  • Randy Schiltz
  • Ray Bearfield
  • Raymond L. Atkins
  • Reagan Walker
  • Rebecca Sive
  • Richard Eisel
  • Righton C. Willis
  • Rob Chambers
  • Rob Coppock
  • Rob Douthit
  • Robert Dardenne
  • Robert Jensen
  • Robert Lamb
  • Robert M. Williams, Jr.
  • Robert Mashburn
  • Robert Weiner & Richard Mann
  • Robin Marty
  • Rodney Adams
  • Roger Gregory
  • Ron Feinberg
  • Ron Taylor
  • Rose Aguilar
  • Rose Weaver
  • Rosemary Griggs
  • Russ Wellen
  • Sam Morton
  • Sao Magnifico
  • Sara Amis
  • Sarah Ayres
  • Sarah Bufkin
  • Saralyn Chesnut
  • Scott Anna
  • Scott Borchert
  • Scott Keyes
  • Scott Wooledge
  • Seth Cline
  • Shane Gilreath
  • Sharon M. Riley
  • Shay Dawkins
  • Sheffield Hale
  • Sheila Barnard Nungesser
  • Sigrid Sanders
  • SoniaTai
  • Sonya Collins
  • Soraya Chemaly
  • Spencer Lawton
  • Stephanie Taylor
  • Stephen Lacey
  • Steve King
  • Steve Krodman
  • Steve Valk
  • Stuart Liss
  • Sue Sturgis
  • Sujigu
  • Susan De Bonis
  • Susan Soper
  • Susan Wilson
  • Suz Korbel
  • Tammy Andrews
  • Tammy Ingram
  • Tanya Somanader
  • Ted Kooser
  • Terri Evans
  • The Barnacle Goose
  • Thomas A. Bledsoe
  • Tiger Liliuokalani
  • Tim Oliver
  • Timothy Freeman
  • Timothy Hurst
  • Tom Baxter
  • Tom Crawford
  • Tom Ferguson
  • Tom Millsop
  • Tom Poland
  • Tom Walker
  • Travis Waldron
  • Travis Waldron & Pat Garofalo
  • Trevor Stone Irvin
  • Tricia Collins
  • Troubadour
  • Valerie Evans
  • Viveca Novak
  • Waldron, Somanader & Garofalo
  • Walter Rhett
  • Wanda Argersinger
  • Wayne Countryman
  • Wayne Johnson
  • We The People
  • Will Cantrell
  • Will Nelson
  • William Cotter
  • William Hedgepeth
  • Yana Kunichoff
  • Yasmin Vafa
  • Zack Beauchamp
  • Zack Ford
  • Zaid Jilani
  • Zaina Budayr




  • Writer Login


    Like the Dew?

    We are non-commercial, all volunteer and supported by our readers. Please help sustain the Dew by making a donation.

    Part 6

    Science’s Sacred Cows: Realism

    by | Mar 13, 2013

    Blackboard-with-physical-formulas“The universe is not only queerer than we suppose, it is queerer than we can suppose.” — J.B.S. Haldane

    In the previous post, we discussed a fiendishly clever gedanken experiment posed in 1935 by Einstein and co-workers and designed to expose presumed flaws in quantum mechanics (QM). When the so-called “EPR paradox” was finally tested experimentally in 1977 at Lawrence Berkeley Laboratory, the results were a resounding victory for QM, while ringing the death knell for Einstein’s cherished principle of local causes. The “EPR paradox” — and Bell’s Theorem, which ultimately led to its resolution — firmly established the notion of quantum entanglement. Further experiments over the past three decades have moved entanglement from the status of novelty into the mainstream of physics. Today we discuss further experiments involving entanglement that call into question another of science’s tacit assumptions: realism.

    Realism is the philosophical stance of most sane human beings, scientists included. Realism asserts: “All measurement outcomes depend on pre-existing properties of objects that are independent of the measurement.” In layman’s terms, there’s a real world out there independent of us (although we may see it differently because of variations in our measurement devices, i.e., our eyes and lenses). After all, if I ski down a slope and collide with a tree in my path, it makes little difference whether or not I believe the tree is real. Most persons — a few Zen philosophers excepted (“What sound does a falling tree make if no one hears?”) would assert that the tree has a reality all its own, independent of me. But in the microscopic world of the quantum, things are so very different than our macroscopic experiences would lead us to believe.

    Recall from the previous post that the paper by Einstein, Podolsky, and Rosen (hence the moniker “EPR”) involved two-particle (say two photon) systems in which twin particles are spatially separated by a vast distance. Certain implications of QM, fretted Einstein, suggested that measuring the polarization of one photon would instantaneously set the polarization of its twin, violating the principle of local causes.

    Let’s carefully parse Einstein’s words when he sprang the EPR trap to conclude that QM is incomplete.

    “One can escape from this conclusion [that quantum theory is incomplete] only by either assuming the measurement of [photon 1 telepathically] changes the real situation at [photon 2] or by denying independent real situations as such to things which are spatially separated from each other. Both alternatives appear to me entirely unacceptable.”

    By referring to “the real situation” and “independent real situations,” Einstein explicitly assumed physical realism. Furthermore, by assuming that spatially separated particles could not instantly “communicate,” he invoked the principle of local causes. Thus Einstein made two fundamental and independent assumptions: locality and realism.

    Because of the profound implications of entanglement, researchers around the world continue to propose and conduct experiments to further clarify the remarkable phenomenon. To summarize their collective results prior to 2007: experiments based upon Bell’s Theorem prove “that all hidden-variable theories based on the joint assumption of locality and realism [emphases added] are at variance with the predictions of quantum mechanics.” The logical conclusion from these results is that theories based on local realism fail to be consistent with the predictions of QM because at least one assumption fails. But which?

    In 2007, a group of researchers at premier institutions in Austria and Poland collaborated to perform yet another stunning EPR-like investigation. The experiment, by Simon Gröblacher and a host of coworkers, tested a new theorem by A. Leggett (2003) that further refines Bell’s theorem. Leggett’s theorem yields a mathematical inequality that, when combined with Bell’s inequality, permits the independent testing of Einstein’s two assumptions: locality and realism. The results of Gröblacher’s team, published in Nature (April 19, 2007), once again validated quantum mechanical predictions. That was to be expected. The unexpected occurred in identifying which assumption of local realism failed. Locality or realism? Surprisingly, both. The authors concluded:

    “Our result suggests that giving up the concept of locality is not sufficient to be consistent with quantum experiments, unless certain intuitive features of realism are [also] abandoned.”

    An independent reality, it now appears, has become the latest casualty of QM. The universe is nonlocal, nondeterministic, and apparently “unreal” as well. Haldane was right: the universe, at least at the quantum level, is “queerer” than we can imagine.

    This essay is extracted from Chapter 11 — “Through the Looking Glass” — of the author’s book Reason and Wonder and also appeared at HuffingtonPost.com.

    ###
    • Image: Licensed by LikeTheDew.com at 123RF.com
    Dave Pruett

    Dave Pruett

    Dave Pruett, a former NASA researcher, is an award-winning computational scientist and emeritus professor of mathematics at James Madison University (JMU) in Harrisonburg, VA. His alter ego, however, now out of the closet, is a writer. His first book, Reason and Wonder (Praeger, 2012), a "love letter to the cosmos," grew out of an acclaimed honors course at JMU that opens up "a vast world of mystery and discovery," to quote one enthralled student. For more information, visit reasonandwonder.org

     

    Print Friendly

     

    Note: Users are solely responsible for opinions they post here and for the agreed-upon rules of civility. Comments do not reflect the views of LikeTheDew.com. Comments are automatically checked for inappropriate language, but readers might find some comments offensive or inaccurate. If you believe a comment violates our rules, click here to report a violation.

  • Worthy of Comment



  • Also on the Dew

    What’s in a Name?

    What's in a Name?

    By: Eileen Dight

    In England the bookies William Hill are giving odds of 4-1 (a tumble from earlier 14-1) on the new royal baby being named "Alice", unless it is "Arthur, Henry or James" (all at 20-1.) If it’s Alice the pay-out for the bookmakers will be eye-watering. My first reaction to reading this today was to feel dubious about "Alice" and to shudder at "Arthur." I wondered how they could admire names that made my mouth turn down at the corners. It’s all about association. My father’s older sister was called Alice. She must have been ancient, in her fifties when I met her a  Read on →

    Taking on the Man Who Would Be Virginia’s Scott Walker

    Taking on the Man Who Would Be Virginia’s Scott Walker

    By: Andy Schmookler

    It is reasonable to believe that the state senator in our part of Virginia is being groomed to do for Virginia—or I should say do to Virginia—what Scott Walker has been doing to Wisconsin. This state senator’s name is Mark Obenshain. In the election of 2013 he came within a hair of winning statewide office as Virginia’s Attorney General. Now there is much expectation that in 2017 he will try to become governor. Here is an important clue regarding what it would mean for him to succeed in fulfilling that ambition: in his Attorney General race, Mr. Obenshain was helped by a $60,0  Read on →

    Making The Honor Roll

    Making The Honor Roll

    By: David Evans

    When I first heard the music of Bob Marley years ago, the Jamaican reggae singer-songwriter, guitarist and philosopher, I found myself moving to the music. Somewhat to my surprise, I seemed to be responding automatically to his enlightened suggestion to "lively up yo'self." Music has always been a challenge to me. I guess part of the difficulty has been my insistence on wanting to know how it works rather than just sitting back and letting it work on me. Too much left- and not enough right-brain dominance. Seven years ago, I joined a small ensemble at James Madison University that was  Read on →

    More reasons for Georgia’s state legislature to meet less often

    More reasons for Georgia's state legislature to meet less often

    By: Elliott Brack

    Some of my readers at Gwinnett Forum have asked if I was serious about requiring that the Georgia General Assembly meet only once in every two years. In short, you betcha! Why? Because most Georgians will tell you that nothing is safe when the Georgia Legislature meets, as members introduce all sorts of measures that negatively impacts its citizens, most bills only benefiting some local constituent. Major case in point: while the state government seeks cuts in school budgets (read as taking away bus driver’s health insurance, while raising the salary of judges), they dance around a billion dollar sales tax rebate f  Read on →