gashin: (Default)
Add MemoryShare This Entry
posted by [personal profile] gashin at 06:49pm on 19/04/2009
You know, I'd say that I should have gone to class, but when your class consists of 450 people, is at 9AM, and is taught by a teacher whose Chinese accent is so thick that, all appreciation of cultural differences aside, you actually cannot understand 80% of what she is saying... well, yeah.

She plays fast and loose with her formulae in her notes, which is making the process of wrapping my head around vorticity (har har) very... frustrating. Can't I just watch videos of tornadoes? I can handle that.

But I now know the symbol for "proportional to":
Clever mathematicians!
There are 9 comments on this entry. (Reply.)


posted by [identity profile] at 02:55am on 20/04/2009
I know that symbol!


posted by [identity profile] at 05:18am on 20/04/2009
It's rare that I, sequestered up in my shoddily-built, was-once-ivory tower of Classical Learnedin', ever stumble across mathematical notation that I did not learn in elementary school.

A classmate posted a Facebook status update in Shavian today, too. So, one new mathematical symbol, and an entire system of phonetic English spelling. Albeit one that I think is way more complicated than it need be.

Still don't understand vorticity. Or angular velocity. Or what the hell is going on with hurricanes, REALLY. I mean, I get the gist of it. But it is a CYCLONE, after all-- it sucks the air around it IN, because it is a condensed low pressure system. And cyclones in the Northern hemisphere go counter-clockwise. And yet the outflow (at the top) of a hurricane goes clockwise, which means it somehow becomes an anticyclone at the top-- in spite of the fact that hurricanes suck air DOWNWARDS through their eye. The hell?! A downward cyclonic in-draft coexisting with anticyclonic outflow???? ARGH.

Whatever, I'm just going to blame it on wind shear. Basically, everything anybody needs to know about powerful storms can be explained by heat, humidity and wind shear. That's my story and I'm sticking to it.


posted by [identity profile] at 05:35am on 20/04/2009
One, cyclonic storms are just what they are, and the names just vary according to where you are.

Also, can I just remind you that your ability to throw in lots of brain-iness always makes me happy.


posted by [identity profile] at 06:34am on 20/04/2009
Oh, natch. I didn't mean to imply... I use "cyclone" as shorthand for "cyclonic storm" because, regional connotations aside, that's what a cyclonic storm is called, because they are systems of convergence/low pressure (even non-storm low-pressure systems are called cyclones). Hurricanes = cyclones = typhoons, etc. Thankfully, I have grasped at least that. :P So when I said "cyclone", I wasn't trying to compare the activity of a hurricane to that of a cyclone. They are the same damn thing; I was just not watching my semantics too closely. My bad.

I'm glad this is at least seeming brainy. Now, if I can dupe 100 multiple-choice questions into thinking it brainy, I'm all set.
posted by [identity profile] at 11:26am on 20/04/2009

I figured you actually knew what you were talking about with the storms.

And yeah, those multiple-choice tests are often stubborn about being convinced.


posted by [identity profile] at 05:24pm on 20/04/2009
Hmm. I know the christian fish symbol is ησοῦς Χριστός, Θεοῦ Υἱός, Σωτήρ. But looking at that symbol above, which kinda looks like a long α, makes me wonder if it's related to α/ω also; there are writings of omega that look like alphas rotated 90°... hmmm.


posted by [identity profile] at 05:47pm on 20/04/2009
I think it is simply the conflation of an equals sign and an infinity symbol. Which is to say, "relationship holding true/being equated unto infinity", i.e., "proportional to".


posted by [identity profile] at 05:53pm on 20/04/2009
Oh I didn't think there was a relationship between the math/logic sign and the ichthys- was wondering if the ichthys is related to α/ω. Just an aside.


posted by [identity profile] at 06:08pm on 20/04/2009
Last I checked, the Ichthys originated from the Vesica Pisces, which looks like a vertical Venn diagram: two overlapping circles, representing the intersection of the divine and mundane worlds. I could be wrong, though.


6 7 8