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Relativity, Black Hole and some doubts

In the model of the big bang I would like to pose the following question. My understanding is that

1. The expansion of the universe is accelerating and

2. The radiation or shock wave to keep the analogy going is something we can measure.

My question is this. While we can rewind the clock to a single moment when the universe was infinity dense how do we know that this was a moment at all. Let me elaborate. As the universe expands could time or space time not also expand and if so than when the big bang occurred is something we cannot measure merely by rewinding the clock. If we are experiencing time at a given rate when the universe is at its current size would time not be being effected by the expansion also and if so would that mean the there was simply no start and no end to the universe? Perhaps the big bang is not as accurate as we may wish and perhaps it is our ability to comprehend that is limited. I propose there is no start or end to the universe it has always and will always be as it, and we, cannot exist without time and as such these two objects or things form a symbiotic relationship with each other. While the universe expands so does time and its effects are reduced in line with its expansion. Does this sound plausible and if not why?

Principles of Physics in Chemistry

Meera Madhu asked:
“is there any priciples of phy involed in chemical reactions ?”
Answer:
Physics and Chemistry are the two main branches of Physical Science, the branch of science which discusses nature and its properties and the various phenomena associated with it.
Some of the Principles to mention are
The Principles of conservation,
Thermal expansion
How to hold a test tube, pipette, Burette etc?
(Visitors are requested to add more)

Congratulations! The Nobel Prize winners in Physics

Saul PerlmutterHearty Congratulations from AskPhysics Team to  Saul Perlmutter, Brian Schmidt and Adam Riess for winning the 2011 Nobel Prize for Physics for the discovery that the rate of expansion of the universe is increasing & a measurement that rocked the physics community in 1998 and led to the murky concept of dark energy.
Adam G. Riess
Brian P. Schmidt

Click Here to read about all Nobel Laurates in Physics
Read the basic information about the discovery of the accelerating expansion of the Universe through observations of distant supernovae here.

Saul Perlmutter
The Supernova Cosmology Project
Lawrence Berkeley National Laboratory and University of California,
Berkeley, CA, USA

Brian P. Schmidt

The High-z Supernova Search Team
Australian National University,
Weston Creek, Australia

and

Adam G. Riess
The High-z Supernova Search Team
Johns Hopkins University and Space Telescope Science Institute,
Baltimore, MD, USA

 

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