Physics is a colour ful subject but its colour subject buy its colour is not VIBGYOR now. It has become VIBGYORVI.

During the days of Arya Bhatta and Kepler. Astronomy was the fashion. A lot of mathematics, geometry and numbers were developed in those days.

 

Then came the Newtonian era of understanding the motion of planets though the laws of interactions, attraction, action and reaction, forces and fields and studies on light were going on in England as well as Europe. Spectroscopy, electricity and the era of Descartes, Gaus, Maxwell, heat and sound and themodynamics paved the way for modern physics.

 

In the beginning of the twentieth century, Einstein, de Broglie, Heisenberg, Rutherford, Dirac, Bhor and many other came in to the picture. Modern physics became the vanguard and the classical phusics was about to be thrown into the dust-bin; but luckliky the engineers came to the rescue of classical physics. The later part of the twentieth century was more colourful. The atomic and nuclear physics were progressing by leaps and bounds. Lasers were developed and spectroscopy and optics became the fashion once more. Space was probed by spectroscopy.

 

After the middle of the last century, rockets and space research was the trend. Every branch of knowledge from the good old Newton's laws was needed. Everything from metallurgy, mechanical engineering to the civil engineering was used. The computer was no more an aid. It became the master controlling production and the trajectories of rockets and space ships.

 

A lot of students ask what speciality they should choose. Fashion changes. Often one gets a course because of various reasons. Whatever one gets is good. Love your subject and go to the heart of the matter and study. Whether one studies physics, philosophy or psychology, the top in the field has a lot of research to do. Science is progressing fast. Is its trajectory a straight line? I don't think so. It goes in spirals. Spin is a law of nature.

 

-Vivek