and Excitement of Physics
in physics are of two types; accidental discoveries and well-analysed research
outcome in the laboratory based on intuitive thinking and prediction. For
example, magnetism was accidentally observed but the reason for this strange
behavior of magnets was later analysed theoretically. This analysis revealed
the underlying phenomena of magnetism. With this knowledge, artificial magnets
were prepared in the laboratories. Theoretical predictions are the most
important contribution of physics to the developments in technology and medicine.
For example, the famous equation of Albert Einstein, E=mc2 was a theoretical prediction in 1905 and
experimentally proved in 1932 by Cockcroft and Walton. Theoretical predictions
aided with recent simulation and computation procedures are widely used to
identify the most suited materials for robust applications. The pharmaceutical
industry uses this technique very effectively to design new drugs. Bio
compatible materials for organ replacement are predicted using quantum
prescriptions of physics before fabrication. Thus, experiments and theory work
hand in hand complimenting one another.
has a huge scope as it covers a tremendous range of magnitude of various
physical quantities (length, mass, time, energy etc). It deals with systems of
very large magnitude as in astronomical phenomena as well as those with very
small magnitude involving electrons and protons.
of time scales: astronomical scales to microscopic scales, 1018s to
of masses: from heavenly bodies to electron, 1055 kg (mass of known
observable universe) to 10−31 kg (mass of an electron) [the actual
mass of an electron is 9.11×10-31 Kg].
study of physics is not only educative but also exciting in many ways.
small number of basic concepts and laws can explain diverse physical phenomena.
most interesting part is the designing of useful devices based on the physical
For example i) use of robotics journey to Moon and to nearby planets with controls from the ground iii) technological advances in health sciences etc.
out new challenging experiments to unfold the secrets of nature and in
verifying or falsifying the existing theories.
and understanding the science behind natural phenomena like the eclipse, and
why one feels the heat when there is a fire? (or) What causes the wind, etc.
world of technological advancement, the building block
of all engineering and technical education is physics which is explained with the
help of mathematical tools.