[Physics Class Notes] on Big – Bang Model Pdf for Exam

The big bang model is an easy model which is useful to know the beginning of the universe. This is like an SDLC model which doesn’t have any design or plan. It is such a unique model which doesn’t have expectations and requirements also. The Big bang model also can be started with the available amount and efforts. There are no limitations and boundaries for this model. Let’s explore more about this innovative method.

Big Bang Model Definition

The big bang model of the universe can be defined as the model which can be heard from both scholars and nonscholars from a century to identify the beginning of the universe. It is a cosmological model which is explained by the concept of software development life cycle. 

Because everyone has several puzzle questions like where the universe starts? How does the universe start? Etc and many more. All these questions can be answered by finding the conclusions using the big bang model.

Features of Big Bang Model Theory

The Big bang theory model majorly works on principles. When is the cosmological principle and the other is the universality of all physical laws? Based on these principles, the features are explained as follows- 

• The model doesn’t have any beginning and ending points.

• The basic aim of this model is to find out the unknown facts.

• It is a long-lasting method that started a century ago.

• In the 12th century, the expansion of the universe can be found using this model.

• The presence of particle horizons is one of the major and important features of this SDLC theory.

Explanation

For the convenience of readers, the big bang theory model can be split into 10 simple steps and each step can be explained below.

How Did it Start?

The first Motto of the Big bang model theory is to find out how the universe has started. After several observations, it is clear that the universe started as very hot and is having high density. According to Wilkinson Microwave Anisotropy Probe (WMAP) launched by NASA, the age of the universe is about 13 billion years. The Big bang model SDLC helps to find out these calculations with more accuracy.

First Growth: Also the first growth achieved by the Big bang model said that the universe is very young as of now. It is a billionth, trillionth of years ahead. Also, space is kept on expanding gradually.

Too Hot: When the universe has formed, the light elements were created and shine with high intensity. But up to 380 crores years, the light elements cannot be created due to the plenty of heat in the space. This excessive heart prevents The shining of the space.

Let there Be Light: After 380,000 years, the universe has started cooling which results in the formation of electrons with the help of light particles. These electrons started combining with the nuclei and formed neutrons. All these help to shine the universe and this training phase is known as the recombination phase.

Cosmic Dark Ages: After 400 million years, the universe started emerging from the cosmic dark ages. These dark holes present in the universe were not identified by anyone as of now. No instrument or gadget can’t be detected in those dark holes. so here at the University started coming out from the darkness and became transparent with the presence of the ultraviolet race. This phase is known as a re-ionization phase.

Stars and Galaxies: Cosmic Background Explorer (COBE), WAMP, Hubble Space Telescope, etc were made several types of research and finally found various stars and galaxies. These twinkling stars make space and the universe beautiful and create more enthusiasm and anxiety to know what is there in space.

Introducing the Solar System: Just before 7 million years, the Big bang model has introduced the solar system which consists of planets, stars, asteroids, etc, and many more. The scholars had found that all the sun, remaining parts of the solar system were formed with gases and can move from one place to another place like a cloud.

Extra Stuff in the Solar System: During the 19th century various scientists had made experiments using big bang moral theory and have proven that along with the stars, planets, sun another some dark stuff is available in the universe. Also, the universe started expanding more and rotating around. The study of this expansion of the universe without changing in its density and volume is nothing but the steady-state theory.

Hence, it is a brief explanation about the big bang theory and steady-state theory. But it is another ending process. Still, the Big bang model SDLC is trying to know more and more about the universe and trying to investigate whether survival is possible in space or not and what is the black stuff, etc.