Hello, I have a question on the nature of vibrations due to thermal energy. Earlier today I read this article which talked about cooling a glass string to near absolute zero using feedback from a high precision sensor. http://phys.org/news/2015-08-smallest-vibration.html what I understood from the article is that they measure the vibration of the string and then apply a force such that it opposes this vibration thus cooling it down. my question is how uniform is the motion of the string due to its thermal energy? my thinking at the moment is that it may be fairly uniform perhaps similar to an oscillation like motion because of the fact that they can measure and then oppose it in 0.3 - 0.4 seconds.(which I think is quite a long time and if it was random a lot can change in that time, correct me if I'm wrong.) I'm not sure if uniform is the right word to be using but what I want to know is how the string behaves before and after it is cooled. Thank you in advance.