Sunday, December 28, 2008
Thursday, December 25, 2008
Tuesday, December 23, 2008
This is the model as it looks before we had to invert it to get it in the right place with regards to the laser sheet.
This is what the whole set up looks like from the top, the only thing I haven't mentioned is the sychronizer, which synchronized the laser and the camera.This is the kind of vector field you get, in this case it is the mean velocity field from 50 individual vector fields. Note the stagnation point at 1.5 inches on the bottom axis (a stagnation point is a point where the flow speed is zero).
In the mean velocity plot for the 15 Hz pump speed the flow is moving a lot slower and as a result the stagnation point is now much farther to the right at pretty much the edge of the image. Also, there are two distinct vortexes (see if you can find them, one is a lot easier than the other. Hint: the shear layer/boundary layer propagates from where the flow separates from the sphere of shot to the left to the fuselage on the right) this indicates that for the slow flow there is a steady state solution.
This is what one of the instantaneous velocity fields looks like, there where 50 of these to make the average field in the image above. You can see a vortex in the approximately the same place as in the mean velocity plot and its pair.
Sorry there is no scale on this graph, also sorry about it not being bounded properly. At (0.75, 1.4) and at (1.25, 1) there is a clear vortex pair. A vortex pair consist of two counter rotating vortexes (see this animation).
Sunday, December 21, 2008
Hints: Look closely at the cell phone screen (its blurry) but both of the measures on there do not have a lot of bars.
Sunday, December 14, 2008
Just for the record, I am not wearing my kippah because it kept falling off during the inflating, testing, and mooring.
Thursday, December 11, 2008
Tuesday, December 09, 2008
Also, have any of you seen the ad in the picture - does anyone really believe that that is a real picture of a woman - not just a bad photoshop.
Monday, December 08, 2008
The most exaggerated part which I find rather funny is the following:
To be invited to give a Goggle Talk is considered something of an honor -- one usually reserved for prominent speakers and leaders in their fields: Senator Hillary Clinton, Apple co-founder Steve Wozniak and Mayor Michael Bloomberg, for instance, all recently gave Google Talks. So for Lansey to have given a talk one week after graduating from NJIT is quite an achievement.I might as well give a shout out to the author, Robert Florida, who is cool.
Whats especially funny is that the brother of the guy who wrote this also gave a tech talk at Google!
Thursday, December 04, 2008
Wednesday, December 03, 2008
Sunday, November 30, 2008
Thursday, November 27, 2008
stapler designed for many pages (I think it's for over 45 pages, but I'm not sure) on a stack that was way too short. He did this three times. Then, for good measure, he topped it off with a standard staple (after a misfire, first).
Needless to say, this student is a math major.
And, Happy Turkey Day to all our American readers.
Tuesday, November 25, 2008
Sunday, November 23, 2008
Fortunately for me the only problem or question that I have is the following:
Who/Where do I contact or visit!?!?!?
Thursday, November 20, 2008
After some preliminary incisions to remove some connective tissue, I was able to peel back the outer layer, revealing the inner guts of the diaper:
This flaky, dusty, papery, almost cotton-like material was laced with little beads:
Upon addition of water, I noticed two phases of absorption. First there was a rapid, although weak absorption by the papery stuff. This was followed by the second, stronger, slower absorption phase when the beads started taking up the water.
in vivo. The first step rapidly pulls the, well, "moisture" away from the, erhm, "source," decreasing the likelihood of instant leaks, while the second phase stores the "moisture" well for a longer period of time, thus allowing the source's "handlers" to sleep a little bit longer.
But just how much moisture can these things hold?
cheap diapers!) I was pretty impressed.
Here are the beads at near-full absorbency:
We still have a bunch of these diapers left, so if there are any further experiments you'd like to see, please let me know in the comments.
And now you know What's Inside a Diaper. Aside from the obvious, that is.
Tuesday, November 18, 2008
Before the baking.
After the baking and glazing, you can see the glaze in the pot in the left corner of this picture. It should be noted I used Alton Browns doughnut glaze recipe instead of the glaze in the recipe.
And of course the close up.