Physics & Cosmos

Cosmos, in general, relates to the structure and nature of the universe, and the nature of “the universe” relates to human systems of seeing, our ways of thinking and perception, and what can be seen, literally and figuratively, by humans in general. It is not only about the cosmos, it is about who we are and where we are going as a species.

LHC and other particle accelerator

LHC and other particle accelerators

The great challenges of today’s science require infrastructures and monstrous investments, among which are the Large Hadron Collider (LHC) – the particle accelerator that started on 10 Sept 2008, the most powerful in the world -, the Pierre Auger Observatory – the largest cosmic ray detector of the moment-, the Cassini Huygens probe – the …

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Special Relativity Einstein's special theory of relativity

Special theory of relativity

The Special theory of Relativity (shortly, Special or Restricted Relativity, RE), first published by Albert Einstein in 1905, describes the physics of motion in the absence of gravitational fields. Before it, most physicists believed that Isaac Newton’s classical mechanics, based on the so-called relativity of Galileo (origin of the mathematical equations known as Galileo transformations), …

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What is Cosmology? Cosmology Definition, Terms, Facts & Theories

What is Cosmology? Cosmology Definition, Terms, Facts & Theories

Introduction to Cosmology Cosmology is the study of the origin, evolution, and structure of the universe.  This science grew out of simple observations and evolved along with mathematical theories, technological advances and space exploration. Below is an attempt to describe the universe by one Arthur Dent (i.e., someone certified scientifically declined in space matters). Okay…the …

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Relativistic quantum gauge field theory- Gauge bosons

Relativistic quantum gauge field theory- Gauge bosons

The Standard Model of particle physics has been well measured from almost every angle. Here’s a scorecard of the results. The currently accepted and experimentally well-tested theory of electromagnetic and weak interactions is called the Standard Model. The Standard Model is based on relativistic quantum gauge field theory. When physicists in the 1920s tried to …

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What is the structure of the Universe?- spacetime geometry

What is the structure of the Universe? Geometry of spacetime

The Einstein equation predicts several possible ways for the Universe to evolve in time and space. What are these predictions, and how do they equate themselves to observation? The starting point of a theoretical exploration of cosmology is the Einstein equation with a metric of the form It is possible to divide the spacetime modelled by this equation conveniently …

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How Old is the Universe?

How Old is the Universe? (All Calculations so far)

A Bible-based assumption of a few thousand years was made by Isaac Newton. Einstein believed in a World that was steady-state, ageless. Since then, somewhere in the centre, data obtained from the Universe places the probable response. First Ingredient: Quantum mechanics    In the early 20th century, it was realized that the stability of atomic …

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