Physics is a branch of science that applies various scientific methods in order to decipher and comprehend the most basic principles and laws of nature – matter, energy and how it interacts with each other. Physicists usually focus on a particular area of physics even though many of these disciplines overlap each other.
For example, astrophysics and cosmology are areas of physics that involve the attempt to understand questions about life within a massive cosmological scale. This science deals and studies black holes and supernovas. It is the aim of these branches of physics to find out how stars are born, the nature of galaxies and even the beginnings of the universe.
Geophysics is the branch of physics that is involved with understanding the earth by studying different forces like electromagnetism and seismic and radioactive phenomena. Among the aspects of science that geophysics is involved with include geology, plate tectonics, atmospheric science, oceanography and climatology.
Atomic and nuclear physics has many other subdisciplines, but all are in one way or another involved with understanding the building block of the universe – the atom. Atomic and nuclear physicists have contributed much to society. Among the benefits mankind has derived from this branch of physics are nuclear power, medical imaging systems, pacemakers, atomic clocks and the different beneficial uses of radioactivity.
Atomic and nuclear physics also has a direct influence on the emergence of quantum physics. This is the branch of physics that is considered the most exciting and fascinating as it attempts to discover how the whole universe works by unlocking the most fundamental levels of matter.