What Existed Before the Big Bang?

[sheetu]

What was there before the Big Bang ? How did it occur ?

 

[PhanthomJay]

https://www.physicsforums.com/showthread.php?t=428978

 

[sheetu]

https://www.physicsforums.com/showthread.php?t=428978

Sir, visited the link indicated by you but dint get satisfactory answer yet.

 

[davenn]

Sir, visited the link indicated by you but dint get satisfactory answer yet.

basically because you are expecting an answer to something that no-one knows the answer to,
yup there's a dozen and one theories, but that's all they are ... theories

the signature of another member ( chronos) on this forum, probably states it the best

"In the beginning the Universe was created. This has made a lot of people very angry. - Douglas Adams"


cheers
Dave

 

[Danger]

I agree with the Douglas Adams' quote. There was nothing before the Big Bang, with the possible exception of the hypothetic "primordial egg" left over from the previous universe.

 

[davenn]

personally, I believe the universe was God created.
but I don't want to get into a science, Philosophical, religion debate. and we shouldn't on the forum

BUT ... IF, and a really big IF the universe is an otherwise natural occurrence I would like
to go with the theory that is a cyclic thing ... bigbang ---> expansion --->contraction -->big bang etc

the problem still remains what was before the first of those big bang's and why did it occur ?

I doubt, that those Q's are ever going to be satisfactorally answered

Dave

 

[sheetu]

yes sir. I agreed with Dave. In the Indian philosophy the cycle "... bigbang ---> expansion --->contraction -->big bang---" is called " ---pralaya(roughly we can say 'contraction')-----srishti(roughly called "expansion with explosion")----pralaya-----srishti---". So the belief that there is nothing before the big bang, doesn't seem reasonable. Because from nothing how can something come !

 

[sheetu]

E = Mc2

Can we say on the base of "E = Mc2" that Energy and Mass can not be created and destroyed ? If we can, then my another question is " in the nuclear power plants while nuclear fission the chain reaction gives off heat energy. This heat energy is used to boil water in the core of the reactor. This water from around the nuclear core is sent to another section of the power plant. Here, in the heat exchanger, it heats another set of pipes filled with water to make steam. The steam in this second set of pipes turns a turbine to generate electricity. Through this electricity we turn the fan on in our house that means now electricity converted into kinetic energy." It shows that Energy keeps changing the form like heat energy --> steam energy --> electricity --> kinetic energy. If energy never destroyed then this kinetic energy converts into what ? and does energy convert into mass ? how?

 

[Kevin_Axion]

Energy is continually transforming for instance a perfect example is annihilation interactions: $$e^-$$$$+$$$$e^+$$ $$\rightarrow$$ $$\gamma$$, ($$\gamma$$) is a high energy photon or energy. Therefore, kinetic energy can interact with molecules producing friction hence heat. This heat may cause molecules to move in peculiar ways and if you have a net movement of for instance low pressure currents and high pressure currents due to heat there is a transformaton to kinetic energy again.

 

[sheetu]

Thank you Sir. Got satisfactory answer. Could you help me to know weather we can say on the basis of "E=Mc2" that Energy and Mass can not be created and destroyed ?

 

[Kevin_Axion]

Energy and Mass can't be destroyed, that is a flaw of the Universe, like a program that loses essential data it was built to evolve on. They can be transformed though, $$E=mc^2$$ shows the relationship between mass and energy but for it to be destroyed shows loss of information which isn't allowed in physics. One can argue Black Holes cause destruction of information but the Holographic Principle makes that statement meaningless.