The professor wrote L' = -ρVΓ on the board. We all marveled at the simplicity when he told us that it defines the lift of a 2-D wing.
"What? That can't be," someone said. "It is. In fact, it describes the lift of any 2-D body in an incompressible fluid," he stated. Span-wise lift equals the negative fluid density times the free-flow velocity times the circulation. We then spent the next few classes of this aerodynamics class learning the proof behind this incredibly simple equation. We dove into Taylor expansions, Green's Theorem, and (if I recall correctly) Laplacian Transforms. Once we got done, we each had a number of pages that fully decomposed this simple equation into something that was finally intuitively provable. We then spent another couple weeks applying the formula to various shapes as point vortices and finally panel vortices. I bring this all up because it took me a long time in school to get to the point where I could even keep up with the professor. Even though the equation looked simple, showing that it actually meant something took a ton of effort. Blueprint is great. Compass is awesome. Haml, as far as I'm concerned, absolutely rocks. But I say this as someone who has spent years making my way to the point where I can read the "quick start" guide and simply go. When I found out about Haml, Sass, Compass, and Blueprint, I had already made it 95% of the way there. I already knew linux, os x, ruby, rails, etc. I had, in effect, taken all of the pre-requisites for something like an Aerodynamics class. DogBot, you're not there yet, but I wish you the best. When you get stuck, ask for help from friends, IRC, mailing lists... whatever is at your disposal. If you stay positive and open your mind like a sponge, you'll get there with the help of your persistence and various communities. I'm not intending to "talk down" to anyone... just trying to explain that something may look simple at first blush, but there's bound to be plenty of knowledge required to work with it correctly. Best, :brad PS: As someone who doesn't use Windows for development, I can't help you with installation issues. I can say, however, that you can work with any non-rich-text text editor (eg: notepad, notepad++, scite, etc). Also, rails is not necessary for sass, but you'll likely find the most documentation (and community members) relating the two. PPS: Emacs navigation keys are neat once you get them into muscle memory. I navigate most text fields in os x with them. On Mon, Jan 18, 2010 at 8:37 PM, DogBot <[email protected]> wrote: > I know that is really vulgar. Sorry. But this is the first time in my > life I have ever said that so many times as I try to understand > something new. > > It all starts when I see this cool video about coding for blueprint. A > framework ...Compass......The idea rocks! so Im like..lets get > this..but then it says I need SASS...hmmm ok...another framework??? > hmmm WTF...fine lets get that too!! wait..IT says that I need > Haml..WTF??? ok what is that...dont know..another > framework...ok ...fine...let's get that too.....WAIT...it runs on > Ruby??huh? WTF??? ok lets see what that is all about....hmmm..a > programming language!!!WTF!!!...not for windows..WTF!!!!.kinda for > macs..WTF..but hey It has a WIN distribution after all..ok lets get > that..the instructions are like "just ruby install/done" WTF??? > where??? I download install a webpage opens..it's effing broken..where > do I put "ruby install/done"..after a day I figure out I have to use > windows command promt!!! WTF!!!! > > ok this this ruby is finally working..it like a server or something, > WTF..it is running..now I need a GEM??WTF!!!!! something about Ruby on > Rails..multiple versions some older that others I am getting a massive > headache....... > > back to the haml site one way or another it seems I need something > called EMACS..WTF..!!!!! I dare you to install it and see how many > WTFsss you will say....it's like some text editor that is so smart > that you dont use the mouse dont even use the cursor keys..if you want > to go back one character you hit control then B!!! Brilliant!!! two > random keys instead of one with an arrow!!!!WWWTTTFFFF!! ok I might > not need this crap.... lost a day learning to use the Rubik cube of > text editors. back to haml. back to sass. back to compass. > > Install: > sudo gem install compass > > WHAT THE > > FUCK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > > where do I put that??!!!!!!! > > -- > You received this message because you are subscribed to the Google Groups > "Haml" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected] <haml%[email protected]>. > For more options, visit this group at > http://groups.google.com/group/haml?hl=en. > > > > -- Bradley Grzesiak co-founder, bendyworks llc http://bendyworks.com/--
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