Category: Quantum Mechanics

Time and Quantum Mechanics

I’ve submitted an extended abstract for my paper “Time and Quantum Mechanics” to the Center for Philosophy of Science’s workshop on Quantum Time. I’m not sure what the odds are of my getting in, but at a minimum prepping the abstract for the center has been a big help getting the paper organized, working out what is essential to the argument, and what can be let go.

Note the abstract is more extended than abstract, about two pages:

CFP-abstract-extended

Quantum Mechanics, Reality, & You at Philcon

Did my Quantum Mechanics, Reality, & You talk at Philcon this last weekend.  Had a very energetic & engaged audience. My thanks to Ed Bishop, Tom Purdom, Ron Bushyager, Ferne Welch, Walt Mankowski, & lots of others for great questions! Did five panels as well.  Full schedule:

Fri 8:00 PM in Plaza III (Three) (1 hour)
LOVECRAFT’S SUCCESSORS (1107)

[Panelists: John Ashmead (mod), Darrell Schweitzer, Marvin Kaye,
A.C. Wise, Neal Levin]

Is anyone writing good cosmic horror today? What new directions has
cosmic horror been taken in
Fri 9:00 PM in Crystal Ballroom Two (1 hour)
COSMOLOGY AND ITS DISCONTENTS (981)

[Panelists: Paul Halpern (mod), John Ashmead, Dr. H. Paul Shuch,
Robert Kauffmann]

The Standard Cosmological Model is the history of the universe as
arrived at over decades of observation and experiment and accepted
by the majority of scientists. It includes the Big Bang, Cosmic
Expansion, Inflation, Dark Matter, Dark Energy, etc. However, there
are real problems with the SM, and real (non-crank) scientists who
disagree with parts of it. What are the issues with Standard
Cosmology, and what alternative ideas are currently being discussed
Sat 12:00 PM in Plaza II (Two) (1 hour)
QUANTUM MECHANICS, REALITY, AND YOU (1319)

[Panelists: John Ashmead (mod)]

Behold the weird! Wigner and his panel of babies! The case of the
highly charged cat! The collapse of the collapse of the wave
function! And quantum chess! What’s new with quantum mechanics &
what does it all mean
Sat 1:00 PM in Plaza III (Three) (1 hour)
TIME TRAVEL FOR THE MILLIONS (1115)

[Panelists: John Ashmead (mod), Andrew C. Murphy, Gail Z. Martin,
Michael F. Flynn, Glenn Hauman]

If everyone could do it, how would this affect daily life? What are
the most frivolous uses of time travel we can think of? What would
be a time traveler’s practical joke
Sat 7:00 PM in Plaza II (Two) (1 hour)
FICTION ABOUT ITSELF: METAFICTION (1200)

[Panelists: John Ashmead (mod), Gregory Frost, April Grey, Neal
Levin, Alexis Gilliland]

Metafiction is when the story and the text becomes interchangeable,
each a part of the other. What are the roots and nature of this kind
of fiction
Sun 1:00 PM in Crystal Ballroom Three (1 hour)
EXOPLANETS AND SCIENCE FICTION (1124)

[Panelists: John Ashmead (mod), Eric Kotani, Inge Heyer, Walter F.
Cuirle]

We now know that planets are as common as stars. Over 500 are known,
nearly 20,000 are suspected.
What impact has this enormous expansion of the known universe had on
science fiction?

 

 

Quantum Mechanics, Reality, & You

I’ll be doing my talk “Quantum Mechanics, Reality, & You” tomorrow at Capclave, the DC SF Convention.  I have the latest slides up on slideshare.

Enjoyed putting the talk together.  I go thru the interpretations of quantum mechanics — some spectacularly silly — and then argue that quantum mechanics is real, you & I — not so much.  🙂

Also doing panels at Capclave on Hot Steamed Punk, Practical Uses of Faster-Than-Light Travel, Choose Your Own Apocalypse, & Great Cthulhu:  Threat or Menace?

 

Talks now on Slideshare

I’ve uploaded a number of my more recent talks to Slideshare.  Physics, with occasionally a wee bit of speculation admixed:

  1. Thought experiments – talk done 1st April 2012 for the Ben Franklin Thinking Society.  Role of thought experiments in history, use by Galileo & by noted violinist, how they can turn into real experiments.
  2. Not Your Grandfather’s Gravity – done last year (2011) on the latest developments in the suddenly hot area of gravity.  The stuff on faster-than-light neutrinos is, alas, already out of date:  boring won:  looks as if the FTL neutrinos were due to experimental error.   But Verlinde’s entropic gravity is still one of the most promising lines of attack.
  3. Temporal Paradoxes – physics talk given at NASA’s Goddard Space Center 2011.  A slightly NASA-fied version of a talk I’d given at several SF conventions in 2010.
  4. Quantum time – physics talk given at Feynman Festival in Olomouc in 2009.  I did popular versions of that talk as well.
  5. How to build a (real) time machine – talk given at several SF conventions in 2009.
  6. Life, the Universe, & the Second Law of Thermodynamics.  Or, the Infinite Probability drive.  About the role of entropy in the universe, complete with Babelfish.  2008.
  7. Faster Than Light – talk on faster than light travel:  theory, practice, applications. Given at several SF conventions in 2007.
  8. Confused at a Higher Level – arguably one of the funniest talks ever given about problems in quantum mechanics. OK, competition not that fierce.  Given at several SF conventions in 2004.
  9. The Physics of Time Travel.  Review of time, with respect to the bending, stretching, folding, & tormenting thereof.  Given at Philcon & Balticon (in various versions) in 2003.
  10. The Future of Time Travel – mostly about the science fiction thereof.  Probably 2002.

These are not all of my talks — I’ve probably done 20 or 30 SF talks over the last 20 years, at least one per year — these are just the ones done using Keynote or Powerpoint.  The 2005 & 2006 talks have gone walkabout.  If they reappear, I will upload.  I generally talk at Balticon, Philcon, & more recently Capclave.  I’ve spoken twice at Farpoint, but that is really more of a media convention, not as good a fit.

Talks before 2002 were done with Word & overheads. Overheads are easier to make than slides, but have a tendency to get bent, flipped, out of order, or in one especially memorable talk:  burnt.  That talk I was doing at the Franklin Inn Club: the projector failed at the last minute & I had to rent another from a nearby camera shop.  The rented projector ran hot. If I stayed on a specific slide for more than 60 seconds, the slide began to smoke.  Literally.  Colored smoke of course, wafting in strange tendrils towards the ceiling. Taught me a lot about pacing, mostly to make it faster.
By the way the word you are looking for, in re me & time travel, is not obsessed, it is focused.  Let’s just be clear about that.

Other talk(s), marginally less speculative:

  1. Overview of Backbone – talk on the jQuery library Backbone, given at PhillyCoders. April 2012.
  2. How to Destroy a Database – talk on database security.  October 2007.  Wile E. Coyote & other experts on correctness & security are enlisted to help make key points.
  3. Getting started with MySQL – talk given at PACS and my Macintosh programming group in 2006. Manages to work in the Sumerians, the Three Stooges, a rocket-powered daschhund, some unicorns, and – of course – dolphins (the totem animal of MySQL).

My Schedule at Balticon

Thanks to Jonette Butler for this:

Quantum Mechanics, Reality and You: Why Is Quantum Mechanics Mysterious But True?
Saturday at 2:00 pm in Salon A
Recent experiments on the foundations, what the implications are for how we think about reality, with interaction to Science GOH Bill Phillip’s work.

A Conversation with Physicist Bill Phillips

Interviewers John Ashmead and Steve Granade
Saturday at 5:00 pm in Garden Room
Interviewers John Ashmead and Steve Granade speak with Science Guest of Honor Bill Phillips.
Speakers: Dr. William D. Phillips

Space War — How and Why?
Saturday at 11:00 pm in Parlor 1041
Panelists debate how space war would be waged and explain some of the science behind the methods.
Moderator: Michael Andrew D’Ambrosio
Speakers: Ian Randal Strock; Jon Sprunk; John Ashmead; Tad Daley

Teachers Workshop
Monday at 11:00 am in Chase
If you teach science, mathematics, language arts or other fields, and you want to assign readings that illustrate important concepts in an exciting way; If you want to incorporate science fiction into a reading program; If you have always thought a science fiction class would be valuable at your school but didn’t know what to teach; or, If you love SF and want to persuade school administrators that teaching science fiction is important, then: The Teaching With Science Fiction Workshop is just what you’re looking for! The Workshop is designed to provide insights into science fiction and the different ways it can be used effectively in the classroom. It answers the questions educators may have about this idea-oriented, forward-looking, student-stimulating body of speculative literature. The workshop lasts approximately four hours, and includes a CD with science fiction resources as well as presentation materials from a presentation exploring the possibility of Silicon-based lifeforms and how they have been treated within science fiction literature.

Not your grandfather’s gravity redux at Capclave

I’m doing “Not Your Grandfather’s Gravity” this evening at Capclave:  had to revise a lot:  added in the superluminal neutrinos from the OPERA project, the curious incident of the Higgs particle detection, and the Nobel just given out for Dark Energy:  half the slides changed!  PDF, HTML.

I’m also doing panels on Hard SF & Alien Cultures, Making Fictional Cities Come Alive (when real ones do, run!), and Astronomy & Science Fiction.  If you are in the DC area, I look forward to seeing you.

Temporal Paradoxes Talk Done: World Safe for Grandfathers

Had a very good time at NASA’s Goddard Space Center doing my talk Temporal Paradoxes.  Nice crowd; lots of good questions.  NASA’s audio-visual support was first rate, as you would expect, and the talk should be up on their site in a bit.  I’ll post a link here when that happens.

I’d like to thank Brent Warner & his colleagues for their warm welcome & all the feedback during the talk.  Brent tells me he particularly liked the quote from an Astounding Science Fiction reader (1933):

“Why pick on grandfather? It seems that the only way to prove that time travel is impossible is to cite a case of killing one’s own grandfather. This incessant murdering of harmless ancestors must stop. Let’s see some wide-awake fan make up some other method of disproving the theory”*

As I say in the talk, if the current literature is on target, the grandfather & other paradoxes are cancelled out by interference by the time machine’s wave function with itself.

Brent & his NASA colleagues were kind enough to provide lunch & a fascinating tool of the facilities:  they manage the Hubble & are working on the James Webb.  Huge rooms with vast devices for subjecting equipment to high G’s, vacuum, heat, noise, vibration, & every other insult that it will need to be able to withstand during launch or in space:  gives one a real sense of just how hard it is to get this stuff to work!

*as quoted by Paul Nahin in his Time Machines: time travel in physics, metaphysics, and science fiction

Temporal Paradoxes Talk Online

I had a lot of fun putting my NASA talk Temporal Paradoxes together.  The feedback I got from the assembled multitude at the Radnor Library last week was extremely helpful, leading to a near complete rework of the talk, in the interests of making it clearer.   Thanks!

The pdf & keynote versions are now online.

Practice Run Thru on Temporal Paradox Talk

I’m doing a practice run thru on my Temporal Paradoxes talk at NASA.

The run thru will be at the Winsor room at the Radnor Memorial Library on March 12 at 2pm.  This is a few hundred feet from the main intersection in Wayne, PA.

The talk is basically the Physics Of Paradox talk, but more focused on the physics than the science fiction (tho in this area it can be hard to tell them apart) & with animations.

Since this is a complete redo of the talk, I’m hoping to get feedback on timing & clarity & focus & such like!

Please come!  And criticize!

Thanks!

— John Ashmead

The Physics of Paradox — Followup

Gave the Physics of Paradox talk at the Library of Congress Thursday (10/21/2010) & then again at Capclave Saturday (10/23/2010).   Good audiences both times, lots of good questions.  At Capclave talk was standing room only & Brent Warner, from the Goddard Space Center has asked if I would be interested in doing it there this spring.

I made some changes to the talk over the weekend, in response to audience feedback & further reflection.  The latest version is now up as Keynote (for Mac users), PowerPoint (for PC users), PDF in slides-only and also annotated forms.

I’d like to thank Dick Ladson, Walt Mankowski, Bruce Bloom, Shelley Handen, Ed & Marguerite Rutkowski, & of course Ferne Welch for their feedback at the dry run, which improved it immensely.  And I would like to thank Nathan Evans of the Library of Congress & Colleen Cahill of Capclave (& as it happens the Library of Congress) for having me.  Lots of fun!

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