March 2009 Archives | Musings

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Austin Weather^#

Wednesday Night

Low: 39°F
PoP: 0%

Thanksgiving Day

Partly Sunny
High: 61°F
PoP: 1%

Thursday Night

Slight Chance Thunderstorms
Low: 54°F
PoP: 23%

Friday

Thunderstorms Likely
High: 43°F
PoP: 71%

Currently:

Partly Cloudy, 46.0°F (7.8°C)
(Doppler Radar)

MathML

$MathML logo$ Posts with this logo use MathML. To see the equations, you either need Mozilla or a MathML plugin for IE/Win. You will also need to install some fonts. The posts were authored in itex (an extension of WebTeX) using the itexToMML Text Filter plugin for MovableType (the README file).

Calendar

March 2009's Entries

Fun (With) Video
- Mar 2, 2009
- Fantastic fingering ferrofluids.

Random Past Entries

Connections
- May 16, 2006
- The major Telecoms feel the heat.
Who Do You Trust?
- Feb 5, 2005
- PGP-signed Comments and rel=”nofollow”
Reinvention
- Feb 23, 2005
- The 9 year old reinvents subtraction… or … Why aren’t there more women in Physics?
Photoproduction of Exotic Baryons
- Jul 2, 2003
- Interesting news out of Jefferson Lab (better known as the home of CEBAF). There’s a report of the existence…
Desolé
- Jun 29, 2007
- Death and resurrection.

MT How-To

Validating Comments
- May 3, 2003
- Run comments through the W3C Validator before posting. The first in a series of “How-To” articles on MovableType.
Bullet-Proofing II
- May 11, 2003
- More bullet-proofing tips to ensure your blog is valid XHTML
Text Filters for Comments
- May 19, 2003
- Allow a choice of Text Filters in your Comment-entry form.
Serve it Up!
- May 26, 2003
- Serving your blog as XHTML 1.1 with a MIME-type of application/xhtml+xml.
<abbr>, <acronym>, Accessibility & ...
- Sep 10, 2003
- A tutorial on marking up abbreviations and an MT plugin which makes the job easy.
Forcing Comment Previews
- Jun 16, 2004
- Introducing the MTHash plugin, and a reliable way to force Comment Previews.
Internationalization and Trackbacks
- Feb 17, 2005
- In which our hero gets fed up with gibberish Trackbacks and takes matters in his own hands.

Recent Comments

Instiki 0.30.0 and tex2svg 1.0 (5)
- Tim
  - Aug 3, 2020 00:03
  - It’s ok i think I get what’s going on. Well the paper’s introduction on page 3 tells you what it ...
- Tim
  - Aug 2, 2020 17:45
  - Hello, Prof. Distler. Have you seen/read this paper? https://arxiv.org/pdf/2006.06872.pdf I wonder if this is a significant result. Is this about ...
- Tim
  - Aug 2, 2020 17:38
  - Hello, Prof. Distler. Have you seen/read this paper? https://arxiv.org/pdf/2006.06872.pdf I wonder if this is a significant result. Is this about ...
- Jacques Distler
  - Mar 16, 2019 20:28
  - … but only if you choose the “Markdown with itex to MathML” text filter.
- Jacques Distler
  - Mar 16, 2019 20:18
  - Works on this blog, too:

Entanglement for Laymen (9)
- Sidney
  - May 15, 2020 15:06
  - This example is very useful ! I still don’t fully grasp the distinction between what the filter does (absorbing photons) ...
- Jacques Distler
  - May 12, 2020 16:01
  - This criteria makes sense indeed, is it correct to interpret it as an “action at distance” ? No more than ...
- Sidney
  - May 12, 2020 15:47
  - This criteria makes sense indeed, is it correct to interpret it as an “action at distance” ? So if I ...
- Jacques Distler
  - May 10, 2020 13:15
  - I suppose I should have started with an exposition of the difference between classical probabilities (there’s a 50% chance that ...
- Sidney
  - May 10, 2020 09:16
  - A layman here, thank you for this very clear explanation (the less convoluted I came across, from what I remember) ...

Action-Angle Variables (24)
- Matthew Kvalheim
  - Apr 14, 2018 20:23
  - Sorry — when I said “global”, what I really meant was globally on defined on a torus or on a ...
- Jacques Distler
  - Apr 14, 2018 20:06
  - But then there is the question: why do the local 1-forms dφ id\varphi^i patch together to yield well-defined global 1-forms? ...
- Matthew Kvalheim
  - Apr 14, 2018 18:57
  - Interesting. I didn’t know that result. Thanks for the reference. Using that result, given (K 1,…,K n)(K_1,\ldots,K_n), we can locally ...
- Jacques Distler
  - Apr 14, 2018 12:12
  - It seems to me that your complaint, here, is purely a local one, and it is the thing that is ...
- Matthew Kvalheim
  - Apr 14, 2018 03:28
  - ω\omega is a fixed, known 2-form. I completely agree. Given ω\omega and the K iK_i, this defines a ...

MathML Update (1)
- Random Bloke
  - Apr 7, 2018 00:38
  - PW has a new post and he mentions you and an interaction with you in the past. Can you comment ...

Statistical Innumeracy (2)
- Peter Theophilopoulos
  - May 20, 2017 13:31
  - The issue that many times an benign fibroid cyst leads to fears of the worst. My wife has had two ...
- Jim Lifter
  - Jan 15, 2011 15:34
  - I couldn’t agree more. We make such irrational decisions when such great data is available. Your example about breast cancer ...

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March 2, 2009

Fun (With) Video

Been rather busy with other matters, but I thought I would share a cool little physics video with you.

Continue reading “Fun (With) Video” ...

Posted by distler at 10:17 AM | Permalink | Followups (17)