Revisiting Elementary School

You might guess that someone taking a course in condensed matter physics in their fourth year of University might be subject to a little bit of tough work. You might guess that the topics are really complicated. You might guess that the prof assumes that you’re not learning scientific notation and basic trigonometry anymore. We’ll you’d be guessing wrong!

  • Anyone remember the pythagorean theorem?
    Jan Jung
  • Trigonometry from Grade 8 with a mistake in it?? A was supposed to be a unit vector.
    Jan Jung
  • Scientific notation from Elementary school??
    Jan Jung

I’ll admit there might be evidence in the last photo that there is some tricky stuff going on, but consider how long it takes to write a partial derivative and how long it takes to draw a picture. The time investment isn’t where the “tricky stuff” is.

You might also like:

It’s all downhill from here

As the EE 323 grades finally made their way out of the Dean’s office (where Rob and I both agree they must have been tied up) semester 6 of 8 officially draws to a close. While it was not the most successful one to date, it was good enough to leave me in what I consider good shape coming out of 3 years of this thing they call undergrad.

Luckily last semester carried a few more labs that boosted the total credit earned up by 0.8 engineering course units over the second semester of third year. That combined with last semester’s almost spotless set of numbers… well let’s just say it keeps me just above that beautiful threshold they call 0.05 which allows me to round up instead of down when calculating the GPA. I’ll admit it’s a pretty sad tale when I’m figuring out those kinds of things but you need something to try and calculate when you’re biking in the rain. What else did I calculate you might ask? Well… I’m still above a 4.0 if I do the calculations factoring all the “+” marks as a bonus 0.3 grade points.

I was well pleased by the stellar lab report mark I sucked out of the last 397 project. While the system is designed to wreak havoc on the self esteem of everyone in engineering physics and honors physics programs, I feel like I won a tiny battle with the last project. Isn’t that what it’s about? I won the battle even though they won the war?? Oh well, so it isn’t quite that way but when you deal with “a personality” such as the one we all had to deal with it’s enough to leave me feeling alright about it.

You might also like:

Asymmetric Capacitance…

Here’s the abstract for the latest paper…

Electric Field Properties of Asymmetric Capacitances

Properties of the electric field produced between two parallel charged conducting wires are described and analyzed. A DC high voltage supply is used to charge a capacitive configuration of narrow gauge wire which produces a strong electric field. An electrostatic model of the apparatus is developed and used to describe the observed phenomenon of ionization of atmospheric gasses in this electric field. Measurement of the forces caused by the acceleration of these ions provided a means of ascertaining an approximate threshold for the electric field to cause ionization of atmospheric gasses of 2.8 ± 0.4 MV·m−1 in excellent agreement with the accepted value of 3 MV·m−1. Forces on the order of tens of milliNewtons are observed, sufficient to support the entire weight of the apparatus generating the field.

You might also like:

Competition and Technological Innovation

Jared Diamond discusses in his 1998 Pulitzer Prize winning book “Guns Germs and Steel” the reasons Eurasian civilization was the fastest to develop out of a universal hunting-gathering society into the dominant player in world affairs as we have come to know it today. Diamond’s conjecture is that the most dominant forces in history have had not as much to do with the people living it out but rather the variation in the geographical settings in which people lived. Diamond succeeds in making an extremely strong case for civilization first getting off the ground in the Fertile Crescent on the basis of natural selection and further for the diffusion of technology developed here to adjacent regions of similar latitude and climate. Diamond seems to ignore the fact that Mesopotamia is connected to multiple regions of equivalent geography. Turkey, and the Balkans aren’t particularly different from Afghanistan and northern India to the east, the Caucasus in the north, and the horn of Africa in the south. All of these areas are roughly equivalent in their ability to grow the crops and herd the animals Diamond cites as the basis of successful early agriculture.

In the epilogue, Diamond makes his most conscious effort to reconcile this discrepancy. Citing geographical differences between Europe and Eastern Asia he demonstrates the increased likelihood of technological adoption in the highly partitioned feudal system of Europe when compared with the super-nation controlled by one consolidated Chinese government. Diamond leaves his argument here, allowing the reader to speculate and fill in the details with respect to the extent of this description as a general rule. What Diamond is suggesting is that revolutionary change is only adopted in a competitive society whereas mundane technological development is universally implemented. While a powered pump to improve irrigation of a rice patty wouldn’t be readily accepted in ancient China, a systematic technique to reroute existing irrigation channels for uniform water distribution would be accepted without hesitation. According to Diamond a revolutionary European inventor would more likely see adoption of their new technology than a Chinese one because a sense of competition exists between one valley’s kingdom and the one over the hill.

Does the same rule apply today? Are revolutionary technological advances more likely to be accepted if they exist in an environment of competition? I would argue that this fails to remain universally true. Modern day global competition is driving routine small advances in technological change. Intel has invested billions to upgrade a microprocessor facility from 90 nm technology to the 45 nm technology now in production. This advance was made not so much as an improvement of their devices, but because it allows them to step ahead in a competitive market. The market for commercial laser printers varies between 42 pages per minute and 48 pages per minute, customers are won and lost over a few seconds. These advances make or break a company, but are hardly contributing to positive technological development.

It is my suggestion that the globalization of many industries has stifled revolutionary thinking, possibly preventing the development of new technologies. A global market allows businesses existing in well defined industries to compete on a larger scale, this improves the ability of said industry to quickly develop new changes to old technology as a way to keep ahead of competition. Analogous to early neighboring farmers growing different varieties of wheat, the advantage of the farmer growing a lower yield to trade and adopt the slightly higher yield grain is obvious. If the pool of of higher yield wheat is extremely extensive (a global market) it is likely that the farmer will focus on upgrading their crop rather than investing effort in doing what they can to try domestication of a new species or improving their existing yield by a new planting technique or spreading manure as fertilizer.

The natural experiment described by Diamond of the Polynesian settlement of the pacific islands, is in some sense and example of what I am trying to describe. These people would load up a boat with taro, yams, chickens and pigs, settle a new island, populate it and expand onwards. This was seen over and over, and it worked. The nature of their advance was an incremental one, not particularly stimulating of new technology. When the technology at hand didn’t quite work, as is evidenced by Easter Island, the Polynesians weren’t thinking about adapting or trying new things, rather they tried to pound a square peg in a round hole and failed.

When faced with obvious competition in an ‘obvious’ or existing industry it’s more likely that existing technologies are refined and expected to solve all problem; even though new problems may be addressed more effectively through new avenues. The Middle Ages saw many castles build taller and thicker walls while they built bigger trebuchets and battering rams to compete directly on the issue rather than try a different avenue of attack. This directed competition as it was seen hundred of years ago gave rise to a period of stagnation in the obvious industries associated with it. The rise of a global economy is certainly providing an even broader competitive avenue for businesses to pursue improved technology in existing industries. It is not, in my opinion, stimulating competition in new fields as well as it could be. Budding technology is often directed early in its development towards existing contemporary industries that appear to have practical and profitable applications for it.

The field of microfluidics is a brand new technology that is, in my opinion, suffering from such stifling. Microfluidic devices provide the ability to perform various chemical reactions using extremely small quantities of the chemicals involved. The application of these devices has been directed while the technology is still well in its infancy towards diagnostic testing for disease. While this is not generally a bad application, it is an example of a situation in which an existing industry sees this technology as a means to an existing end. Funding for microfluidics research is largely conditional that the goals of the project are directed towards biological testing applications. There has not been, nor will there ever be, an opportunity for companies or research institutions to develop microfluidics as a stand alone entity. From the time the devices were able to be used for primitive diagnostic testing any development of the technology towards improving device versatility or range of applications was essentially halted. Likewise, when the neighboring farmer knew that there was a superior plant to grow, their interest in growing their previous crops to their full potential waned.

The global marketplace is not a terribly difficult place for a revolutionary new idea to get off the ground. It is not however, an environment that stimulates revolutionary change the way competition has in the past. I will admit that I am unsure of whether or not this is a symptom of the adoption of a consolidated marketplace or a symptom of a global market itself. The preoccupation with trying to do everything marginally better than the competition may or may not be a phase that the world goes through. Ideally large scale competition is something that will also stimulate revolutionary new developments in technology in addition to the slow crawl of incrementally better equipment. As we all know, the things we hope to see done are not always the things that are done.

You might also like:

Engineering Management

Consider the individual who shows up on the first day of work prepared to give it their best shot, hoping that that their new job is something they’ll really enjoy. When performance of their peers is honored that is completely out of line with the work requested it’s natural to try and then poach grades from the ’system’. By the time they arrive at performance review #3 it is then completely understandable to aim for a zero. When they realize it’s possible to get their work done in 20 minutes the natural progression is to see if a 10 minute effort will also score in the zero category.

When I had given up on ever scoring above a 0 in the assignments I enjoyed the lectures far more and paid alot more attention to where I saw the topic of discussion for the course arising in different situations. When I got the message that “understanding management issues is important in life” my commitment to learning the material was improved, it was never reflected in my effort towards the assignments and if I had to do it again I likely would start out on the very first day aiming for a zero grade, it is truely not worth the effort.

I understand that Flynn was rushed in class today but isn’t the message that we’re supposed to take from this situation that as managament we need to try and decouple this avenue (payment) from feedback? Wouldn’t an atmosphere of “we don’t do the work to get paid?” be the most likely to produce quality work. Some work situations are certainly conducive to this message but aren’t they also the least likely situations to promote the feeling of poaching a paycheck from the ’system’?

I am hesitant to agree with Flynn’s comment that “Managerial recognition is a more powerful motivator than compensation.” Recognition seems awfully fake unless there is something hands on to support it. Wouldn’t a work atmosphere of ‘usefulness’ do a much better job of motivation than recognition. I can draw on 2 examples of why I think this is true.

  1. Flynn’s comments regarding frustration working at the chemical plant because he didn’t know what was going on, the comment was that lack of understanding was a powerful demotivator. There are many other examples of jobs that suck because you don’t know why you’re doing them.
  2. Why do so many people turn to religion to seek purpose in life? It’s not out of recognition but rather them believing that what they do with their time matters.

You might also like:

Antigravity

For my final Physics 397 lab I’m working with Andrew Burke and Steve Jim, we’re studying propulsion. The idea is that we ionize air in the presence of a strong electric field, accelerate the electrons in one direction and the cations in the other direction. As a result in the mass difference (more than 10000:1 for atmospheric gasses) There is thrust generated according to Newton’s third law.

The magnitude of the propulsion force depends on how much air is being ionized and the electric field that it is going to be accelerated across (remember that the mean free path in air (SATP) is on the order of microns, not meters). Generating an electric field strong enough to strip electrons from air molecules isn’t all that simple when you imagine how strong it needs to be, but there is a relatively simply way of doing it. A very simple application of Gauss’s Law to an infinite line charge shows that the field goes like (lambda)/(2*pi*eo*r) where lambda is the linear charge density eo is the permittivity of free space, and r is the distance from the axis of the line charge. That means that the electric field gets arbitrarily large as you approach a theoretical line charge.

To charge a very thin wire (good approx of line charge) we just need to include it in a capacitor and put a large voltage across it. We’re just suspending the thin wire (42 gauge magnet wire) above a large radius of curvature conductor (piece of Al foil).

To measure the force generated (as the obvious manifestation of the phenomenon) we’re suspending the apparatus on a pendulum and measuring the angle of deflection from vertical.

Prelimiary tests have shown that we’re not completely out to lunch, we’re deflecting our “flyer” by close to 100 with a mass of many tens of grams if not hundred (haven’t yet measured).

You might also like:

Tech Electives

The Tech elective I’ve chosen for the fourth year of my program are:

  • EE 380: Microprocessors Microcomputer architecture, assembly language programming, sub-routine handling, memory and input/output system and interrupt concepts.
  • EE 470: Waveguides Distributed circuits, propagation and radiation of energy. Transient and time harmonic signals in transmission lines, including impedance matching. Microwave and optical waveguides.
  • PHYS 472: Quantum Mechanics B Review of the postulates of quantum mechanics; quantization of angular momentum; matrix representations, spin and parity; approximation methods; perturbation theory; variational and other methods; applications; scattering theory; systems of identical particles.
  • EE 456: Nanoelectronics Fundamental concepts related to current flow in nanoelectronic devices. Energy level diagram and the Fermi function. Single-energy-level model for current flow and associated effects, such as the quantum of conductance, Coulomb blockade, and single electron charging. The Schroedinger equation and quantum mechanics for applications in nanoelectronics. Matrix-equation approach for numerical band structure calculations of transistor channel materials. k-space, Brillouin zones, and density of states. Subbands for quantum wells, wires, dots, and carbon nanotubes. Current flow in nanowires and ballistic nanotransistors, including minimum possible channel resistance, quantum capacitance, and the transistor equivalent circuit under ballistic operation.
  • EE 351: Digital Electronics MOS digital circuits, logic gates, threshold voltages. MOS logic families: design and simulation. CMOS timing: propagation delay, rise and fall times. Storage elements, memory, I/O and interfacing.

I’m not choosing the easiest way to get through fourth year, Quantum is going to be a decent time investment, and picking EE351 and EE 470 require having labs when I could get away with choosing one of those courses to have no lab. I think it’s important to keep my feet wet in as many areas as I can so I’m pursuing a range of tech electives rather than aiming at taking all the photonics courses I can, or doing something like hitting all the courses in the IC design series. It’s also worth noting that I’m not registering for EE457, microfabrication. I have some experience on that topic and will get a bit more this coming summer, for that reason I’ll direct my focus elsewhere. If I want to pursue it in grad school I’m not getting all that far behind anyways.

You might also like:

Why I love James

Here’s a high quality musing by James Bell the First:

If an intelligent outside observer is required for a waveform to collapse (and thus for anything to exist), how is the entire universe here? Who is the extra-dimensional intelligent outside observer who makes the waveform of the universe collapse into the form that we experience it in? Is there a God?

You might also like:

Guns Germs and Steel

I just wrapped up reading “Guns Germs and Steel” by Jared Diamond as part of ENGG 405 (Management for Engineers). If you’re interested in getting a copy of the book so that you don’t have to go and dig one up before the deadline of March 30, feel free to drop me an email

Guns Germs and Steel

It was a rather well thought out discussion of the physical variables that have played a major role in how History played out. As an effort to answer the question “Why did Europeans gain the upper hand technologically over the course of history”. It’s not obvious why the Mayan culture didn’t get rolling and invade Europe, they aren’t any stupider of people. Diamond makes an effort to describe that nature provided a big advantage to let people near the Mediterranean quit their hunter-gatherer existence prior to, or more completely than, people elsewhere in the world. It’s worth a read if you’ve got time to read lots of books, not worth your while if you’ve only got the commitment to read a couple books per year.

You might also like:

Degree Symbol in LATEX

LATEX has a command for pretty much every useless symbol known to man, but it doesn’t have one for something I would consider pretty much essential… The degree symbol

You can write a circle in suberscript using math mode: ^\circ

The obvious thing to do is to define a command that writes a degree symbol when used with \degree as it should be. Just add before the document starts this line…

\newcommand{\degree}{\ensuremath{^\circ}}

This can be used in math mode as well as outside of it.

Related Posts with Thumbnails
You might also like: