The arrow of Time Hello friend, have you ever thought why we are able to remember our past only. Why the time goes to end? We have some scientific theories to understand this system. In the universe, there are at least three arrows of time- 1. Thermodynamic arrow of time. 2. Psychological arrow of time. 3. Cosmological arrow of time. Thermodynamic arrow of time: It is something related to the second law of thermodynamics which says that the entropy of a system always increases. And there present many disordered states than ordered once. Suppose you have a jigsaw in a box. There is only one certain ordered state o...
Gravitational Force Hello friends, in this blog you will get to know about gravitational force. This force acts among all particles of the universe. Its range is infinite. Gravitational force plays a very important role in wide events of the universe like formation of stars and galaxies and their development etc. As you know there are four kinds of forces in our nature- Gravitational force, electromagnetic force, weak nuclear force and strong nuclear force. This is the universal force. Every particle of nature feels the gravitational force. It is the weakest force of nature of the nature but it affects the things which are far away. One more interesting thing about gravitational force is that it is always attractive. ...
Anthropic Principle Anthropic principle tells us about the universe after big bang. Why we exist in the universe? Anthropic principle solves such kind of questions. There are two versions of anthropic principle, weak and strong. According to the weak anthropic principle, in this infinite universe, the conditions, necessary for the development of intelligent life, will met only in few regions. The intelligent beings in such regions should therefore not be surprised if they observe that their locality in the universe satisfies the conditions that are necessary for their existence. It is a bit like a rich person living in a wealthy area not seeing any poverty. One example to use of the weak anthropic principle is to explain why the big bang occurred about ten thousand million years ago, it takes abou...
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