Thursday, November 29, 2007

How hard could it really be?

I saw this in the YU library:
Are there actually people out there who need instructions for using a stapler? (Rhetorical question, you don't need to answer).

Also, update on the parody contest: Because deadlines sometimes work, please have your entries in by the end of December.

Tuesday, November 27, 2007

Computer Aided Design

Well it is 10:30 at night, and I am still at Rutgers doing work. So I though I would let you enjoy my work with me. I have been working on Pro-E, which is a 3D modeling software. The work I have been doing is a combination of HW and my final project in the class. The HW is the boat and the engine, for the engine I only assembled the parts and animated it. In the boat anything that is grey I made; I also made it move (the paddles row). The final project is a mechanical clock, so here is the escapement gear and the gear attached to the spring that powers the clock. As for my grammar, its late I am tiered and I have been working all day.

Monday, November 26, 2007

Leopard Slug

What is this crazy animal all about?!?!?!

I found it one evening at my doorstep in Newark! Carefull these slugs have been known to eat small babies when these Leopards escape from the zoo or venture from the african savana into suburbs . . .
Does anyone actually know about these things?

Thursday, November 22, 2007

The Absent-minded Professor

I am taking a course with a rather absent-minded professor, which can be equally frustrating and amusing. This professor hands out photocopied notes on a regular basis. These notes were written somewhere between the 1970's and mid 1980's, and have been copied and handed out to students since then. In the midst of notes discussing the equivalence principle in quantum mechanics (i.e. quantum mechanics should behave like classical mechanics in certain limits) there was this rather magnificent doodle (keep in mind, this doodle has been handed out to over two decades worth of students...):
Anyway, some of you may recall that some time ago I argued that Dr. Suess had a Ph.D. in physics. Now I think he may have had a ghost writer...
In any case, I decided to color in the professor's illustration:

Oh, and Happy Turkey-Day to everyone.

Tuesday, November 20, 2007

Doublet, Source or Sink

Warning geekiness will follow, if not interested just skip to next section. Source or sink? Well as it turns out a doublet it both. It is where you have a source at –B and a sink at B then you let B → 0. So basically you have a source (radial flow outward) and a sink (radial flow inward) in the same place, the flow resembles a dipoles field lines. Why do I mention this, well as it happens if you have a doublet and put it in a uniform flow (a flow at constant speed) the system mathematically models a cylinder in a uniform flow. Now the cool thing that arises from this is what is called the D’Alembert’s Paradox, which is if you solve for the net force acting on the “cylinder” it works out to be zero which can’t be right since the constant flow should apply a force. This was solved by Ludwig Prandtl who introduced the concept of boundary layers, this allowed for there to be a force. Now the really cool geeky thing about this is that if you can make a doublet and use a superfluid for your fluid you can theoretically get no net force on the cylinder in a uniform flow.

Now on to the fun for everyone part. Based upon the stuff above (which you don’t need to read) if you add a vortex to the system, that is take a spinning cylinder in a flow you get a lift force acting perpendicular to the initial flow, this is called the Magnus Effect. From all this you get Anton Flettner who invented the Flettner Rotor Ship.


This actually crossed the Atlantic. He also invented a rotor mill (which I can't find a good picture of), which used the same principle as the ship; it was a windmill that for the paddles had spinning cylinders.

Sorry about the massive amount of technical geeky stuff in this post.

Thursday, November 15, 2007

Debris Free Zone

In the cellar of the engineering building at City College there's a hallway which has this sign hanging at regular intervals:
They are clearly very serious about this: not even any cardboard!
But then again, maybe they aren't so serious:
It is like this along the entire hallway.

Wednesday, November 14, 2007

Turbulent Flow

Sorry that I forgot to post yesterday. So for today I will post some cool pictures I took a couple of months ago.

I just found this amazingly cool, the flow started out as a laminar (smooth, steady) flow, and then became a turbulent flow.

Sunday, November 11, 2007

On Fancyness of Garbage Cans

A trash can in Newark NJ



A trash can in Calais France


A Rubbish Bin in Birmingham England

Who wins??

Thursday, November 08, 2007

Pointless

I was recently flipping through a Hebrew-English dictionary and came across the following thing:
For those who can't read Hebrew, the middle word word is actually pronounced haredi (with a gutteral h). So basically, they translate the word by giving its transliteration. How helpful.
(I know, there are other translations as well, but why give the transliteration of only haredi? It's not like haredi is an English word.)

Tuesday, November 06, 2007

Welcome To Winter

Well winter is finaly here and with it exams, I have had a test or quiz every week for the past six weeks and for another two weeks. So, pretty much nothing has been happening for a while. However things should pick up in the near future. In the meantime please enjoy this comic I found.

Sunday, November 04, 2007

Candy Stacking

For those of you who don't know, I'm living in Newark these days, and my mom has supplied us with some candy. Naturally we don't just eat the candy . . . this particular tower was stacked by the prodigy Ariel.



The view outside my apartment

Thursday, November 01, 2007

Well, which is it?

In honor of our 3rd year of blogging, we decided to hold . . . a contest!!! We figured it would be fun if other people wrote posts in our style, parodying us, etc. So, people should email us blog posts in the style of Eli, Yoni, Aryeh and Stacy. The best posts will be posted to the blog for all to see. You can email 'em to one of the addresses below:
Now, on to the regularly scheduled blog post:
I recently received an email about the Ford Foundation Diversity Fellowships. These fellowships attempt "to blah blah blah diversity of the blah blah blah by blah blah blah ethnic and racial diversity, to blah blah blah diversity, and to blah blah blah diversity blah blah blah." The details, as you can tell, are not so important.
In the eligibility information for these fellowships they state that eligibility is limited to "all citizens or nationals of the United States regardless of race, national origin, religion, gender..." OK, that's good - anyone is eligible, no matter what their race, etc. is.
But then I noticed the "positive factors" towards "choosing a successful candidate". Along with stuff like good grades (bleh), promise for future achievement, and blah blah blah loves diversity, was the following line:
"Membership in one or more of the following groups whose underrepresentation in the American professoriate has been severe and longstanding..."
And here I thought that this fellowship was open to everyone, "regardless of race" and "national origin." Silly me.
Anyway, since male Jews are certainly not underrepresented in the American professoriate, I marked the email as spam.