## Satiric poetry：The Department of Mathematics in the Cathay

Posted Jan30-13 at 11:34 PM by Strongart (Young mathematician Strongart in China)

The Cathay mathematics is really amazing,
Teachers without understand can do teaching,
Copy the theorem and prove from the textbooks,
Turn two pages once by their ingoring.

They cannot solve most of the exercises，
The book examples are checked at their exams,
Many toilet papers are produced by their hands,
Only transfer some old history and comments.

A lot of dump guy crowd in the department,...
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## understanding how electric field is spreaded through entire electrical circuit..

Posted Jan24-13 at 01:51 PM by shivaniits

basically we know that the em energy travels from battery to load at nearly speed of light but it doesn't flow inside wires instead it is spreaded in form of fields as electric and magnetic field surrounding electrical wires..we can understand this whole concept by considering the little facts bit by bit..
so in this post we would be considering how the electric field is considered as in a whole circuit let us consider our circuit as:-
circuit.png

now firstly...
Attached Images
 circuit1.png (25.1 KB, 10 views) circuit2.png (91.2 KB, 13 views)
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## Misconception of the Heisenberg Uncertainty Principle

Posted Jan17-13 at 08:40 AM by ZapperZ

{I have seen this type of question or scenario being presented on PF numerous times. So I'm going to repost something I wrote in my personal blog here, with extra info/additions at the end.}

One of the common misconception about the Heisenberg Uncertainty Principle (HUP) is that it is the fault of our measurement accuracy. A descripton that is often used is the fact that to observe the position of an electron, for example, one needs a probe, such as a photon, with very short wavelength...
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## Physics trick

Posted Jan10-13 at 01:46 PM by petrokozak

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## Why I Am on PF

Posted Jan8-13 at 09:01 AM by elkement
Tags

I do not use this blog as a blog really, but probably it might make sense to add some background here if somebody clicks on my profile.

I am mainly posting to the Career Guidance forum as I found PF myself on the internet when I was considering career changes.

My intention to post on PF is to share some of my experiences - things I would have liked to have heard when I was thinking about academia yes or now, starting a business of my own, and the like.
I am from...
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