Awareness, Interesting Facts and Science

Why faster than  light travel is impossible? We always seen that in science movies there are many planes and characters which can travel faster than light. These type of seens fill up us with enjoyment but it is possible or not? No it is not possible because how much we understand and know science there is no any object which can travel faster than light. There are many theories, principles and mathematical equation which prove that "why faster than Light travel  is impossible?" But in this article I explain only one theory which is " causality priciple ".  Why faster than light travel is impossible?  According to the science there is no anything in  universe which can travel faster than light speed. There is a very interesting fact about the light speed is that "speed of light is speed limit of the universe" said by Elbert Einstein. It is clear that the maximum speed by which an object can travel is the speed of light. But the body or ob...

Time dilation:- In the year 1686,  Sir Isaac Newton gives three laws of motion which are world famous laws in the era of physics. Sir Isaac Newton These laws gives true and better results when applied to the daily life objects which are travelling with speed. But these laws doesn't gives satisfactory result when applied to the high speed approx the speed of light. But only few people conclude this but only Elbert Einstein proved this. In the year 1905, he gives " special theory of relativity ", he introduced every one to the new world of physics. Elbert Einstein His theory has three main consequences- 1- Time dilation 2- Length contraction  3- Relativistic mass But in this discussion I talk only about the time dilation, in brief if any person who is sitting in plane which is travelling with a high speed observe that there time spent is slow then the observer who observe from the outside.  Time dilation Einstein used two assumptions ...

Black Hole There are many stars approaching their death. But very few stars they will become  black hole to the point they will become invisible. Black Hole Now we can understand this by a concept- "If I have a stone so I can throw it upwards, it will go little bit up and it comes down. And I again throw it little hard  it further go up and comes down. But if I throw stone so fast that it will manage to escape from the earth's gravity that have speed something like 25000 miles I don't quit remember but some escape velocity . Now that escape velocity that speed through which you should have to throw it is much larger like say that for the sun and much larger that for the moon." Black Hole Now if imagine you would take light or straight beam i.e. flash light and we know that gravity act on light. By  Eienstein equation light is affected by gravity. Now if the gravity is so strong light it goes up and comes down in another word light does not escape...