- Christine Dantas, who some of you will remember from her blog Background Independence, is back with a new blog called Theorema Egregium.
- The 7th edition of the blog carnival Philosophia Naturalis is out at Geekpoint, and as always it has a lot of interesting links. We are in with my post about The world's largest microscope.
- Things you only learn at this blog: the ASCII code for the degree-symbol is 176, here is with special dedication to Frank:
- °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
You produce this thing by either typing ° or ° and I promise to use it from now on. - The Canadian Association of Physicists has an annual Art of Physics Competition. The website is not worth checking out because it mostly consists of broken links, but the winner photo from 2003 is just great:
[Photo Credits: David Elfstrom, 'Hand through flat soap bubble']
- Update: In case you didn't know, the International Polar Year begun yesterday. Interestingly, the Polar Year lasts two years.
- Have a nice day!
Friday, March 02, 2007
This and That
11 comments:
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This picture vaguely reminds me of the book jacket for "QED: The Strange Theory of Light and Matter"--minus that rather ominous looking hand, of course. Gotta say, that hand is far too anthropic for my taste!;)
ReplyDeleteAnyways, this Feynman classic is perhaps the closest thing I'll even experience regarding the comprehension of QED, not to mention the essence of Feynman...
Hi Cynthia,
ReplyDeleteI vaguely recall Feynman's book. Our physics teacher in high school had us read it, and it founded my disliking of everything that's quantized ;-) But more seriously, I really didn't like the book, because it has this undertone that tells you: 'all this is completely trivial and easy to understand, see: you just have to draw some arrows and add them up.' but this leaves completely out the really important questions. (In addition, it makes you feel utterly stupid, if you still don't understand it.)
Unfortunately, I can't recommend a better book. I really like Zee's 'QFT in a Nutshell', but I guess the scope of that book goes beyond what you're looking for? I also like the intro in Peter Woit's book, but that's probably a bit too short.
Anyway, what I meant to say, if you find Feynman's book inaccessible, don't blame yourself.
Regarding the photo. Yeah, the hand isn't exactly the prettiest, but it gives the photo kind of a kick, no? Without it, it had been just another soap film picture. I'd probably have chosen a nose sticking out ;-)
That book by Feynman will tell you more about the spirit of QM than a lot of undergraduate educations in physics.
ReplyDeleteBy the way, I'm fairly stupid and still haven't figured out how to get the degree sign. I know that there is a way of typing the unicode symbols but I'm enough of a white bread computer user that I don't have to do it.
Bee, thanks for the info on Zee! In all honesty though, this isn't the first time I've heard that "QFT in a Nutshell" stands-out above all the rest, so to speak.
ReplyDeleteSo a short while ago, I did a quick scan of the book and determined that it's way over my head. However, as a nice consolation prize to myself, I did read one of his light-weights: "Gravity at Work and Play". This book covers Newtonian and Einstein's gravity remarkably well, but falls short of addressing quantum gravity. But then, this book was written prior to both The Holographic Principle and Maldacena Duality taking hold in pop-sci.
Anyways, A. Zee is a most brilliant writer with a really cool name to boot.:)
Enjoy the weekend!
Cynthia
From the looks of things, the front cover of Feynman's mini-QED appears to be an image of light reflecting off oily gross water. Whereas, this picture on the post is an image of light reflecting off soft, soapy water. Admittedly, I much prefer this image of a lovely, delicate soap bubble rather than one of a nasty, slimy oil slick--anytime, any place...
ReplyDeleteBee, I'm a bit uncertain as to how a masculine hand (instead of a feminine one) is less anthropic in nature. On second thought though, substituting a manly kinda hand with a lady's hand might do the trick. After all, long, slender fingers including a luxurious set of nails is a good way to reduce God's presence in the Universe, I reckon.;) But then again, for entertainment value, I like your idea of putting a nose in the photo the best!
By the way, I'm fairly stupid and still haven't figured out how to get the degree sign.
ReplyDeleteAh, sorry, the code above was for HTML. You can try it here in the comments. Just copy what I've written:
°
ah, should have mentioned, you can use the ASCII code to type the symbol on your keyboard. if you have, turn on num-lock, press ALT and type 0176 on the right side numeric keyboard. If you don't have a num-lock key or the extra keys on the right (my laptop doesn't have), you probably have something like a 2nd function option (on my keyboard it's a blue button labeled 'FN'), and the keys are somewhere else (on my keyboard 0-1-2-3-4-5-6-7-8-9 is FN plus m-j-k-l-u-i-o-7-8-9-0).
ReplyDeleteNow lets try if that works indeed:
°
VOILA!!
Anyway. This is obviously a procedure I'm not willing to undergo for every stupid รค in an email.
The most easiest way to get all the funny symbols is actually to find them somewhere and just use copy and paste.
Best,
B.
Dear Bee,
ReplyDeleteI keep this page bookmarked:
http://htmlhelp.com/reference/html40/entities/latin1.html
At least your webpages and HTML email will be fine.
-Arun
Hi Arun,
ReplyDeletethanks, that is nice. It's not that I don't know how to type all these symbols, I'm just too lazy for it. My attitude towards language is it's supposed to communicate information. If it fulfils this purpose, I don't care about the details. As you can guess, my teachers didn't like my attitude at all ;-). But seriously, the typical German nitpicking around grammar rules imho in most cases doesn't change anything about the information content. English is much more flexible. And honestly, who cares if I write light or lite, as long as it's clear what I mean?
Best,
B.
Hmmm. Well I don't have a numlock keypad. I tried various things with the F2 function key, and I do have a mysterious purple key Fn, that seems to have something to do with a pattern of buttons in the shape of a number keypad 0-9 and all that, but the only thing fiddling with all this did was to make the computer ask me if I wanted to change my home page. And I guess I got a little older and stupider.
ReplyDeletesee ... this is exactly why I think it's not worth the effort. There are better ways to get old and stupid ;-) E.g. by reading other people's blogs.
ReplyDelete