The future already exists, you just have to look for it.
(Nov. 28, 2011)
Physicists from the University of Stuttgart show the first experimental proof of a molecule consisting of two identical atoms that exhibits a permanent electric dipole moment. This observation contradicts the classical opinion described in many physics and chemistry textbooks.
A dipolar molecule forms as a result of a charge separation between the negative charged electron cloud and the positive core, creating a permanent electric dipole moment. Usually this charge separation originates in different attraction of the cores of different elements onto the negative charged electrons. Due to symmetry reasons homonuclear molecules, consisting only of atoms of the same element, therefore could not possess dipole moments.
However, the dipolar molecules that were discovered by the group of Prof. Tilman Pfau at the 5th Institute of Physics at the University of Stuttgart do consist of two atoms of the element rubidium.
I really like this gif of the relationship between torque, force, linear momentum, and angular momentum.
r = radius, F = force, p = linear momentum, L= angular momentum, τ = torque.
It really explains a lot.
Does anyone know where I can find some good physics videos on rotational motion? And one which goes through examples, not just derive the equations. And which explains in detail the methods?
A little overwhelmed, last night I decided to skip ahead in the book and read about relativity. And I realized that although there are bits and pieces of physics that stress me out from time to time, not knowing is part of the process.
One can’t expect to understand everything immediately, and if they do they are fooling themselves. I want to be challenged, and I want to understand things. Reading that section of the book was absolutely fascinating and brought me to perspective. It made me understand that I am going to have to work hard, and I’m going to have to accept that sometimes this field will be hard. But to understand the world around me, and the universe around me, is entirely worth it in the end. And now I am a little excited and in anticipation of what we will learn next in the class.
Can I ask someone a physics question?
Let me know if I can ask you.
It’s a lot to ask, but would anyone be willing to answer physics questions I might have? Not necessarily today, but in general? If you understand calculus related physics questions.
If you have a skype that would be even better.