Physics is defined as the science of nature. It studies the quantity of matter a body contains and interactions between matter and energy in a wide variety of contexts. In other words, physics is basically the study of how objects behave.

Physics does not take into consideration the bulk or volume of the matter. The scope of physics ranges from particle physics to cosmology. Particle physics studies the smallest particles of which all ordinary matter is made up (known as sub-nuclear particles).

Cosmology, on the other hand, is the one of widest subjects in the spectrum of physics, and it deals with the behaviour of the material universe in its entirety. Besides particle physics and cosmology, the gamut of physics studies a variety of other topics related to acoustics, atomic physics, cryogenics, electromagnetism, elementary particle physics, fluid dynamics, geophysics, mathematical physics, mechanics, molecular physics, nuclear physics, optics, plasma physics, quantum physics, solid state physics, statistical mechanics and thermodynamics.

Physics does not take into consideration the bulk or volume of the matter. The scope of physics ranges from particle physics to cosmology. Particle physics studies the smallest particles of which all ordinary matter is made up (known as sub-nuclear particles).

Cosmology, on the other hand, is the one of widest subjects in the spectrum of physics, and it deals with the behaviour of the material universe in its entirety. Besides particle physics and cosmology, the gamut of physics studies a variety of other topics related to acoustics, atomic physics, cryogenics, electromagnetism, elementary particle physics, fluid dynamics, geophysics, mathematical physics, mechanics, molecular physics, nuclear physics, optics, plasma physics, quantum physics, solid state physics, statistical mechanics and thermodynamics.