My musings on physics and technologies

     After the big bang for millions of years, the universe comprised mostly of helium and hydrogen. Darkness prevailed in this infant universe. There was no light in this universe, until the first stars were formed. In this blog, we'll talk about the life cycle of stars. In subsequent blogs we'll talk about black holes, and other mysterious objects in the universe.   The carina nebula, huge clouds which give rise to stars For millions of years the universe was enveloped in darkness with huge clouds of dust and gas forming and continuously expanding. These clouds grew to become so massive with significant mass that their force of gravity eventually caused it to collapse into itself.  It shrunk to form a extremely hot dense core with disks of matter spinning around it. As the cloud collapses, a dense, hot core forms and begins gathering dust and gas. Eventually, the core became so hot reaching approximately 15 million degrees , the particles of dust and gas got so close togethe

We have discussed in the last 3 blogs the important building blocks of the Special Theory of Relativity, a key cornerstone for modern physics. In this concluding blog we will discuss mass energy unification, better known as  E=mc²   . Let's start off with a summary of some of the key concepts of the Special Theory of Relativity. Frames of Reference : Reference frames are - in simple terms - the place from where one makes observations . It could be the sofa you are sitting on. The important point on frames of reference is that there is no absolute frame of reference, in other words, no frame of reference is ever absolutely stationary,  i.e., motion is relative and everything is in motion with respect to something else. We also spoke about how the laws of motion were not applicable to light. The speed of light according to Einstein is a constant. The Postulates: There are two postulates or consequences of relativity. They are: The laws of physics hold true for obs