Recent content by chaoszen

Maybe a very complicated and abstracted painting which can only be explained by sense of integration of images in human mind will work.

I recently read from newspapers that china has built a experimental advanced superconductive TOKAMAK , and such an experiment is going to set about. It also mentioned if the experiment exceeded, China would be the first country on the planet owing such a experimental equipment.I just roughly...

But according to the theory. It CAN BE imaginary. It may contradict causality. I just wonder HOW that contradict it!

Sorry, I have made a mistake.What I wanted to ask is if(\Delta s)^2+(\Delta x)^2+(\Delta y)^2+(\Delta z)^2= (c\Delta t)^2is a negative.

yes It's what I mean.

When I was reading the Landau's The Classical Theory of Fields, I found that when distance of four dimensional space is negative, the time's square should be a negative as well.Then time is an imaginary number. it's SPACELIKE. But what is imaginary time mean on earth? They say that in that...

Happy New Year! Best wishes for The World Year of Physics 2005! It is a year for all physics learners and lovers! Do you have some wishes and plans in the Year of Physics? You can speak out here. And I’ll go first. 1. I want to learn more advanced physics and more complicated mathematics...

Computing By A Black Hole!? I have recently read the november edition of Scientific American. The article says that everything computes. Bits like momentum ,angular momentum exchange when particles interact with each other. But how does it encode matters as quantum mechanics effect exists?I...

But I suddenly have a notion that what if the universe is parallel?And quantum mechanics allow possibilities and one thing have many states mixing together. I mean there can be a time machine which would carry you to another "universe"-state in which you are indeed dead to prevent that...

I am a chinese university freshman. Having joined here for several months I discovered that there are many intelligent ones here. We can talk about the mysterious chinese culture(as western always reckon) and I yearn for a chance to practice my oral english in return if I can understand what...

well,stress. I thought american student didn't have much home work to do and can enjoy themselvs in the various social activity. but what about Chinese students' stress, maybe more than this. mountains of practice and homework.

Many westers always mix up chinese with japs!China has a long and conplex history and a tremendous population. What's the typical portrait of Chinese people in your mind? What's the common sense about China in your surrounding?

to me, and most ordinary Chinese people, go to bed after 0:00 is incredible. It means you can't keep healthy and energic in the day time. How do you all night owl keep your energy in the day time?