## Posts Tagged ‘Physics’

### Density of states in nanostructures

19May15

Some notes from my classes and worth seeing (if not remembering) results. We’d like to calculate the function called density of states, for systems with partially restricted dimensions. In fact all of the considered cases are 3D, they’re just confined spatially in one (2D) or two directions (1D). Starting from the general term for density of […]

### Flash Labs NO.2 : Newton’s Law of Gravitation

22Aug08

It’s high time to support my physics by computers. Today I experimented with Newton’s Law of Gravitation for 3D and as far as it goes to one object it works great. However I didn’t managed to apply the force to the second object (The Sun).The movie which you can see above is a gif, cause […]

### Physics NO. 1 : The momentum of light

29Jun08

Well, everyone of us probably heard in high school (or earlier) that the photon has it’s own momentum. And I think that more then a half of us kept wondering then about it. Namely, without deep knowledge of Physics, such statements like “light have no rest mass”, or “light is an electromagnetic wave, but it […]

### Next Olympics Problems Solved

02Dec07

Experimental problem 2 Experimental problem 3 Theoretical problem 1 Theoretical problem 2 Theoretical problem 3 Problems from Poland 59 MO 2007/2008 I level/II set. Problem 5 Problem 6 Problem 7  Problem 8

### When Superposition Rule Doesn’t Work?

27Oct07

Superposition is such an obvious rule in Physics that it’s worth telling when it doesn’t work. The rule breaks, when equatation of a wave is not longer linear. It happens when the altitudes are big enough to make the Hook’s Law fail ( ). Example: Shock waves after explosions which characteristic differs from a normal […]

### 15 tasks from Polish LVII (2007/2008) Physics Olypics

15Oct07

I’m not glad from the solutions, but I had no better idea’s :] Sorry. All 15 tasks solved