Recent content by Kkangliu

My favorite sci-fi is The Time Machine by H.G wells. although it have been published for a long time, for in this book, the author put forward that the time is the forth dimension. and I also like A Wrinkle in time.

Well, yes and no. That happens is because the reference we are chosen. Take a a balloon for example, first you should draw some dots on the surface of it. Then blowing it up, once you have blown it up, you will find the further distance between two dots, the faster speed of two dots. Because...

No, there are not the same thing. the cosmological constant was firstly introduced by Albert Einstein in his theory general relativity to hold back gravity, so it is a negative force also know as lambda. After Hubble discovery that our universe is expanding, it imply that cosmological constant...

AS we all know, the speed of light is constant wherever and whenever you observe it. Nevertheless, how could that happen? In the first place, why could the light travel. in other words, how could light travel from one place to another? secondly, why the speed of light keep constant, to put in...

We all know that Einstein's theory apply to the big universe, and quantum mechanism apply to the nanoscopic scale, and both theory work perfectly in it's realm, but how could two theory contradict each other?