Heisenberg's Uncertainty Principle?

Question

I have to do a breif presentation over Heisenberg's uncertainty principle, and unfortunatley it is way to complicated for me to understand. She gave us 2 days to research it and i dont know what im doing. What i would like from you guys, if you would be so kind, is a simple explanation, in your own words, so no plaguerizing is going on, as to what his uncertainty princple says. Also, a link to a webpage with a proof of his theory, and some of the problems with his theory. If any of you could provide me with any or all of these answer it would be so awesome!

Answer 1

basically it says that you cannot exactly know a particles position and momentum. if you measure the particles exact location, you can only know its momentum within a certain accuracy, and vice-versa.

here is an example i use:
think about taking a picture of a car speeding by in front of you with a camera that has a limited shutter speed.

if you move the camera keeping it focused on the car when the picture is taken, the background is blurred. you can determine the speed of the car by your camera motion but you cannot tell exactly where the car was because of the blurred background.

conversely, if you fix the camera keeping it focused on the background when the car passes and the picture is taken, the car is blurred. you can determine the location of the car but you cannot tell exactly what the speed of the car was because of the blur.

does that help at all?

Answer 2

This principle applies to what we can know based on our facilities for which to measure. You can not equate our limited intellect of the created with that of the limitless intellect and power of the creator. We knew nothing 150 years ago about the simple cell and all of its inner workings but today with high tech microscopes we can see that in each cell is a whole entire world of systems maintained by these very small molecular machines. How can we predict, control or affect any particle let alone subatomic yet we try to assume their existence and name and classify them based on limited information and then apply those limits to the God that created all matter to begin with. How ostentatious of you.

Answer 3

For a particle it is impossible to measure exactly the position and the speed momentum simultaneously. The product of the standard deviation on the position dx and the momentum dp is at least equal to dx*dp = h/2Pi
This means that when you know exactly the position of your particle you have no idea of its speed, and if you know its speed you have no idea on its position

Answer 4

Have a look at the following web page.

Answer 5

Its simple when u measure something u urself affect its state.