Natural Sciences
Natural science is a branch of science concerned with the description , prediction , and understanding of natural phenomena , based on observational and empirical evidence . It consists of following disciplines :
o o o
Physics Chemistry Biology
Physics is a study of basic laws of nature and their manifestation in different natural phenomena . Physics is the study of physical world and matter and its motion through space and time , along with related concepts such as energy and force . o Word Physics is derived from a Greek word phusikḗmeaning nature .
o Two principal types of approaches in Physics are :
o Unification : This approach considers all of the world ’ s phenomena as a collection of universal laws in different domains and conditions . Example , law of gravitation applies both to a falling apple from a tree as well as motion of planets around the sun . Electromagnetism laws govern all electric and magnetic phenomena . o Reduction : This approach is to derive properties of complex systems from the properties and interaction of its constituent parts . Example , temperature studied under thermodynamics is also related to average kinetic energy of molecules in a system ( kinetic theory ).
Impact and uses of Physics
o It can explain a phenomena happening over a large magnitude with a simple theory .
o Experiments and observations are used to develop new theories for unidentified phenomena and improve old theories for existing phenomena .
o Development of devices using laws of physics .