Beginner's Guide to learn Physics(quantum physics, classical physics and relativity)

By Umang Rajpurohit

Physics is a huge subject(may be the toughest of all), that covers many different topics going from galaxies in the depth of space right down to sub-atomic particles and if you don't know much about physics it can be difficult for you to understand the very basics of it or how different subjects are more or less related to each other.

So, I will be giving some of the most basic information about physics. Physics can be broken down into three main parts Classical physics, relativity and quantum physics. 

1. Classical Physics

 First is classical physics. Isaac newton, was the god of classical physics, his laws of motion describe how everything made of matter moves of act and his law of universal gravitation tied together the motion of planets in the sky with the falling of objects on earth into one elegant and general description he also invented Calculus a supremely powerful mathematical tool which has been used over the centuries to drive new physics calculus is really a part of mathematics but physics and mathematics are inseperable.

Math is the language of physics and you can imagine it like the bedrock that the world of physics is built from. Newton, also made strides in the field of optics which is the physics of light and how it travels through different materials explains refraction seen in prisms and lenses which he used to focus light and how it travels through different materials. Other than Math, Astophysics, cosmology, electomagnetism, thermodynamics, fluid mechanics waves and many more.

2. Relativity 

Albert Einstein was a great intellectual who evolved the theories of special and general relativity. Special relativity foretell that the speed of light is constant for all observers which means that when you travel really fast, weird stuff starts occuring like time slowing down. It also states that energy and matter are different aspects of the same thing, through the famous formula E= MC2

General relativity says that space and time are part of the same fabric called spacetime, and that force of gravity comes from objects blending spacetime, making other objects fall in towards them.

3. Quantum  Physics 

Atomic theory probed the nature of the atom and more and more detailed descriptions of the atom were developed. From a tiny sphere, to electron orbits, to energy levels and then to the electrons being wave-like charge distributions.

Condensed matter physics describes the quantum physics of many other together in solids and liquids and is where many great technologies have come from like computers, lasers and quantum information science. 

Nuclear physics describes how the nucleus of atoms behave and explains radiation, nuclear fussion, the splitting of the atom used in our nuclear power plants, and nuclear fusion which takes place in the sun and will hopefully soon be control here on earth. Particle physics probes even deeper to find the fundamental sub-atomic particles that everything is made of and are described in the standard model of particle physics. 

Quantum field theory seize all of the quantum physics and combines quantum physics with the special theory of relativity and is the best explanation of the universe we have.

About Me

               Umang is a student of geography pursuing bachelor's in geography  who enjoys indulging his passion including reading geography  books and writing  geography articles. This blog is about 10 Popular National Parks and Wildlife Sanctuaries Everyone Should Visit . My goal is to make every post valuable and something I'd want to read. Its mostly a Educational blog, meant to inspire. You can find my videos on youtube  (there's a link in the upper right to jump to them) but posts are almost about geography .Other than writing blog on geography i also do illustration on Instagram. Enjoy Umang